首页 > 最新文献

Iranian Journal of Seed Research最新文献

英文 中文
Quantification of Phenolic Compounds and Evaluation of Allelopathic Potential of Wheat Cultivars on Wild Mustard (Sinapis arvensis) Seed Germination Indices 小麦品种对野生芥菜种子萌发指标的化感作用及酚类化合物定量分析
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.55
Hossein Rezvani, F. F. Kakhki
Extended Abstract Introduction : One of the biological methods of weed control is the use of allelopathic substances or herbal secretions that have the potential to inhibit growth weeds. Wheat allelopathic studies include the study of wheat allelopathy against other crops, weeds, pests and diseases, isolation and identification of allelopathic compounds, the effects of wheat toxicity on self-storage and management of wheat residues. Wild mustard ( Sinapis arvensis ) is a problematic weed in the country, especially in Golestan province. The present study was conducted to investigate the allelopathic potential of four wheat cultivars to use those cultivars in integrated weed management system to reduction growth mustard weed. Materials and methods : A factorial experiment was conducted in completely randomized design with three replications at Physiology Laboratory of Golestan Agricultural Research Center. Treatments included concentrations of 0, 2.5, 5 and 7.5% aqueous extract of aerial and underground organs of four wheat cultivars (Morvarid, Moghan, Tajan and Arta) with 6000 polyethylene glycol treatment in four concentration (zero, 2.5, 5 and 7.5 percent). Three-parameter logistic model was used to evaluate the allelopathic potential of wheat genotypes for reducing the percentage of wild mustard germination and liquid chromatography (HPLC) was used to determine the phenolic acids composition in wheat cultivar extract. Results : Extract of shoot of all wheat cultivars reduced root length of wild mustard in comparison of control. Wheat cultivars reduced shoot length of wild mustard by 28% to 51% compared to control. The highest reduction in mustard shoot length was obtained from the Morvarid extract. Increase in shoot extract concentration of Arta to 7.5%, reduced root and shoot dry weight as 47 and 29% in compare of control treatment and Moghan cultivar in the same concentration (7.5%) caused reduction in root and shoot dry weight with 68 and 41% respectively. The highest reduction in germination indices of wild mustard was obtained from high concentrations of Morvarid and Moghan wheat extract. It was also found that with increasing concentration of polyethylene glycol (PEG) growth indices and germination components of wild mustard seed decreased, but this decrease was not significant. This confirms that the osmotic potential of the extract concentration is not involved in the exacerbation of the allelochemical effect and the likelihood of osmotic effect seems poor. In total, Morvarid cultivar with 25.34 mg phenolic acid content had the highest phenolic acid concentration, which was approximately three times more than that of Tajan, 1.5 times Moghan and three times of Arta cultivar. Morvarid cultivar had higher concentration of vanillic acid and ferulic acid than the other three cultivars. Overall, the least allelopathic effect was observed in Tajan cultivar and the most allelopathic effect was in Morvarid cultivar. Conclusion: Among the cultiva
杂草控制的生物学方法之一是使用化感物质或草药分泌物,这些物质有抑制杂草生长的潜力。小麦化感作用研究包括小麦对其他作物、杂草、病虫害的化感作用研究、化感作用化合物的分离与鉴定、小麦毒性对小麦残茬自储与管理的影响等。野生芥菜(Sinapis arvensis)在该国是一种有问题的杂草,特别是在Golestan省。研究了4个小麦品种的化感作用潜力,以期利用这些品种在杂草综合管理系统中减少芥菜杂草的生长。材料与方法:在戈列斯坦农业研究中心生理实验室采用完全随机设计,3个重复的析因试验。4个小麦品种(Morvarid、Moghan、Tajan和Arta)地上和地下器官水提液分别以0、2.5、5和7.5%的浓度与6000聚乙二醇(0、2.5、5和7.5%)处理。采用三参数logistic模型评价小麦基因型对降低野芥菜发芽率的化感作用潜力,采用液相色谱法测定小麦品种提取物中酚酸成分。结果:与对照相比,所有小麦品种的茎部提取物均能缩短野生芥菜的根长。小麦品种使野生芥菜的茎长比对照减少28% ~ 51%。芥菜芽长减少最多的是Morvarid提取物。在相同浓度(7.5%)的对照处理和Moghan品种中,当Arta茎部提取物浓度增加到7.5%时,根和茎部干重分别减少47%和29%,根和茎部干重分别减少68%和41%。高浓度Morvarid和Moghan小麦提取物对野生芥菜的发芽指数降低最大。随着聚乙二醇(PEG)浓度的增加,野生芥菜种子的生长指标和萌发成分均有所下降,但下降幅度不显著。这证实了提取物浓度的渗透势与化感效应的加剧无关,渗透效应的可能性似乎很低。总而言之,Morvarid品种的酚酸含量最高,为25.34 mg,约为Tajan的3倍,Moghan的1.5倍,Arta的3倍。Morvarid品种香草酸和阿魏酸含量高于其他3个品种。总体而言,Tajan品种化感作用最小,Morvarid品种化感作用最大。结论:在所研究的品种中,Morvarid品种的抑制作用最高。结果还表明,对茎部提取物的抑制作用最大,根提取物对所研究性状的抑制作用小于茎部。总的来说,本研究结果表明,一些小麦品种对野生芥菜杂草有较大的抑制潜力,可用于育种计划,以产生高化感潜力的品种。认识到这一问题更为重要,特别是在可持续杂草管理方面。因此,有必要对其化感作用潜力进行综合研究,以便将其应用于除杂草、除虫害、除植物等农业领域
{"title":"Quantification of Phenolic Compounds and Evaluation of Allelopathic Potential of Wheat Cultivars on Wild Mustard (Sinapis arvensis) Seed Germination Indices","authors":"Hossein Rezvani, F. F. Kakhki","doi":"10.52547/yujs.7.2.55","DOIUrl":"https://doi.org/10.52547/yujs.7.2.55","url":null,"abstract":"Extended Abstract Introduction : One of the biological methods of weed control is the use of allelopathic substances or herbal secretions that have the potential to inhibit growth weeds. Wheat allelopathic studies include the study of wheat allelopathy against other crops, weeds, pests and diseases, isolation and identification of allelopathic compounds, the effects of wheat toxicity on self-storage and management of wheat residues. Wild mustard ( Sinapis arvensis ) is a problematic weed in the country, especially in Golestan province. The present study was conducted to investigate the allelopathic potential of four wheat cultivars to use those cultivars in integrated weed management system to reduction growth mustard weed. Materials and methods : A factorial experiment was conducted in completely randomized design with three replications at Physiology Laboratory of Golestan Agricultural Research Center. Treatments included concentrations of 0, 2.5, 5 and 7.5% aqueous extract of aerial and underground organs of four wheat cultivars (Morvarid, Moghan, Tajan and Arta) with 6000 polyethylene glycol treatment in four concentration (zero, 2.5, 5 and 7.5 percent). Three-parameter logistic model was used to evaluate the allelopathic potential of wheat genotypes for reducing the percentage of wild mustard germination and liquid chromatography (HPLC) was used to determine the phenolic acids composition in wheat cultivar extract. Results : Extract of shoot of all wheat cultivars reduced root length of wild mustard in comparison of control. Wheat cultivars reduced shoot length of wild mustard by 28% to 51% compared to control. The highest reduction in mustard shoot length was obtained from the Morvarid extract. Increase in shoot extract concentration of Arta to 7.5%, reduced root and shoot dry weight as 47 and 29% in compare of control treatment and Moghan cultivar in the same concentration (7.5%) caused reduction in root and shoot dry weight with 68 and 41% respectively. The highest reduction in germination indices of wild mustard was obtained from high concentrations of Morvarid and Moghan wheat extract. It was also found that with increasing concentration of polyethylene glycol (PEG) growth indices and germination components of wild mustard seed decreased, but this decrease was not significant. This confirms that the osmotic potential of the extract concentration is not involved in the exacerbation of the allelochemical effect and the likelihood of osmotic effect seems poor. In total, Morvarid cultivar with 25.34 mg phenolic acid content had the highest phenolic acid concentration, which was approximately three times more than that of Tajan, 1.5 times Moghan and three times of Arta cultivar. Morvarid cultivar had higher concentration of vanillic acid and ferulic acid than the other three cultivars. Overall, the least allelopathic effect was observed in Tajan cultivar and the most allelopathic effect was in Morvarid cultivar. Conclusion: Among the cultiva","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79390758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of Germination, Seedling Emergence, and Management of Pest and Diseases in Nicotiana tabacum cv. K326 in Response to Seed Disinfection 烟草种子萌发、出苗及病虫害防治评价。K326对种子消毒的响应
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.209
Hamed Zamani, H. Mobasser, A. Hamidi, Alireza Daneshmand
Introduction: Seed is the fundamental input of crop production and tobacco is cultivated as transplanting and its transplant produced as float system. Therefore, seed germination and produced seedling health and diseases and pests management have high importance. So, evaluation of seeds dressing effect on germination and important pests and diseases management in the nursery for healthy transplantable seedling production is important. The study aims to investigate the effect of disinfectant of K326 tobacco seed on germination and percentage of transmissible transplants and management of contamination of sciaridae fly, aphid, and collar rot in a float system tray. Material and method: This study was conducted as a completely randomized design in 3 replications at Tirtash Research and Education Center in 2014. seeds dressed by pelleting apparatus disinfected with Metalaxyl (Ridomil) and Thiophanate–methyl (TopsinM) fungicides and Imidacloprid (Gaucho), Thiamethoxam (Confidor) and Thiodicarb (Larvin) insecticide and seeds heating by 60ºC temperature warm air during 1 hour, seeds treatment by 50ºC heat water for 10 minutes and treatment by 0.5 percent concentration sodium hypochlorite for 4 minutes. Then normal seedlings percent by standard germination test, seedling emergence percent in float system, transplantable seedling of float system and infected to Sciarid fly, aphid and stem rot seedlings determined. Results: Results showed that K326 Tobacco Seeds Disinfected by 2.5 g/kg metallaxyl + 2.5 g/kg thiophane-methyl (70% wettable powder) + 10 g/kg imidacloprid + 6 cm3/kg Thiodicarb had the highest percentage of normal seedlings, percentage of seedling emergence in the float system tray and percentage of removable transplants and the least seedling contaminated with sciaridae, aphid and collar rot. Conclusion: Results of this study showed that all seed disinfection treatments improved seed germination, seedling emergence percentage, and removable seedlings in the float system tray as well as infected seedlings compared to control decreased collar rot, sciaridae fly, and aphids. Also, the mentioned traits were superior to the non-chemical disinfectant treatments in seed disinfection treatments with the studied fungicides and insecticides.
种子是作物生产的基本投入,烟草以移栽方式种植,移栽方式以浮法生产。因此,对种子发芽及产苗的健康和病虫害管理具有高度的重要性。因此,评价种子处理对种子萌发的影响及苗圃重要病虫害管理对秧苗健康生产具有重要意义。本试验旨在研究K326烟草种子消毒药剂对烟草种子发芽率和移栽率的影响,以及对浮置系统托盘中棉铃虫、蝇类、蚜虫和结腐病污染的处理。材料与方法:本研究采用完全随机设计,3个重复,于2014年在蒂尔塔什研究与教育中心进行。种子用甲螨灵(利多米)和硫代甲基(TopsinM)杀菌剂和吡虫啉(高乔)、噻虫嗪(红柏)和硫代威(拉文)杀虫剂消毒的制粒器脱粒,种子用60℃的暖空气加热1小时,用50℃的热水处理10分钟,用0.5%浓度的次氯酸钠处理4分钟。然后通过标准发芽试验测定正常苗率、浮法体系下出苗率、浮法体系可移植苗率和染蝇、蚜虫和茎腐病苗率。结果:经2.5 g/kg金霉灵+ 2.5 g/kg甲基噻吩(70%可湿性粉剂)+ 10 g/kg吡虫啉+ 6 cm3/kg硫代威消毒后的K326烟草种子正常苗率、浮法系统托盘出苗率和可移移栽苗率最高,孢子虫、蚜虫和领腐病苗污染最少。结果表明,与对照相比,所有种子消毒处理均提高了种子发芽率、出苗率和浮法系统托盘中的可移动苗,并减少了穗腐病、棉铃虫和蚜虫。所研究的杀菌剂和杀虫剂对种子进行消毒处理时,上述性状均优于非化学消毒剂处理。
{"title":"Evaluation of Germination, Seedling Emergence, and Management of Pest and Diseases in Nicotiana tabacum cv. K326 in Response to Seed Disinfection","authors":"Hamed Zamani, H. Mobasser, A. Hamidi, Alireza Daneshmand","doi":"10.52547/yujs.7.2.209","DOIUrl":"https://doi.org/10.52547/yujs.7.2.209","url":null,"abstract":"Introduction: Seed is the fundamental input of crop production and tobacco is cultivated as transplanting and its transplant produced as float system. Therefore, seed germination and produced seedling health and diseases and pests management have high importance. So, evaluation of seeds dressing effect on germination and important pests and diseases management in the nursery for healthy transplantable seedling production is important. The study aims to investigate the effect of disinfectant of K326 tobacco seed on germination and percentage of transmissible transplants and management of contamination of sciaridae fly, aphid, and collar rot in a float system tray. Material and method: This study was conducted as a completely randomized design in 3 replications at Tirtash Research and Education Center in 2014. seeds dressed by pelleting apparatus disinfected with Metalaxyl (Ridomil) and Thiophanate–methyl (TopsinM) fungicides and Imidacloprid (Gaucho), Thiamethoxam (Confidor) and Thiodicarb (Larvin) insecticide and seeds heating by 60ºC temperature warm air during 1 hour, seeds treatment by 50ºC heat water for 10 minutes and treatment by 0.5 percent concentration sodium hypochlorite for 4 minutes. Then normal seedlings percent by standard germination test, seedling emergence percent in float system, transplantable seedling of float system and infected to Sciarid fly, aphid and stem rot seedlings determined. Results: Results showed that K326 Tobacco Seeds Disinfected by 2.5 g/kg metallaxyl + 2.5 g/kg thiophane-methyl (70% wettable powder) + 10 g/kg imidacloprid + 6 cm3/kg Thiodicarb had the highest percentage of normal seedlings, percentage of seedling emergence in the float system tray and percentage of removable transplants and the least seedling contaminated with sciaridae, aphid and collar rot. Conclusion: Results of this study showed that all seed disinfection treatments improved seed germination, seedling emergence percentage, and removable seedlings in the float system tray as well as infected seedlings compared to control decreased collar rot, sciaridae fly, and aphids. Also, the mentioned traits were superior to the non-chemical disinfectant treatments in seed disinfection treatments with the studied fungicides and insecticides.","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88587567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Germination and Some Morphophysiological Traits of Convolvulus arvensis in Response to Salinity Stress 盐胁迫下旋花萌发及一些形态生理特性的研究
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.89
Azam Jamshidizadeh, Masoumeh Farzaneh, A. R. Ghahfarokhi, F. Nasernakhaei
Introduction: because the most and Binweed Convolvulus arvensis L.) is the ten widespread noxious in the that it is reproduced by seed, horizontal lateral root, and rhizome. Because of the extensive underground root system of the bindweed with abundant buds and established root reserves, binweed competes more tolerant than crops under salinity and drought stress. More information on morphophysiological traits of binweed under salinity conditions and comparison of salinity tolerance index between germination and seedling can also be contributed to the most effective management. In order to investigate the germination and seedling growth characteristics of binweed two experiments were conducted separately under salinity stress. Materials and Methods : Germination experiment was done in a completely randomized design with 9 levels of salinity stresses (control), 5, 20, 25, 30, 35, and dS.m -1 four the The seedling experiment was performed in a random complete block design consisted of five levels of salinity (tap water, 10, 20, 30, and 40 dS.m -1 ) with three replications as the pot in a non-shade greenhouse of Agricultural College of Shahid Chamran University of Ahvaz. Results: The results showed that with raising salinity, percentage germination and vigure index of seed declined, but Radicle/ Plumule ratio rose. After two weeks, in response to salinity a decrease in root and shoot characteristics of the seedling was observed. Salinity stress data were fitted to a three-parameter logistic for seedling stage showed that the salinity levels higher than 7.86 dS.m -1 led to 50 percent reduction in tolerance index. It was found that 19.84 dS.m -1 caused 50% decrease in the tolerance index at germination stage. Sufficient tolerance index growth stage variation in response to salinity was found which suggests that bindweed tolerance to salinity at germination stage is about 3 times more than that of seedling stage. Conclusions: Radicle/ plumule ratio at germination stage and root lateral branches at seedling stage increased in concentrations of up to 25 and 20 dS.m -1 , respectively. It seems the maintenance of root area and branches in response to increased salinity provide an acceptable mechanism of salinity tolerance for binweed. According to the three-parameter logistic model, the salinity tolerance of bindweed at germination and seedling stages was estimated at 20 and 8 dS.m -1 , respectively.
导语:由于联花(Convolvulus arvensis L.)以种子、横侧根和根茎繁殖,是分布最广的有害植物。由于联缕草地下根系广泛,芽量丰富,根系储备已建立,在盐胁迫和干旱胁迫下,联缕草比其他作物更具耐受性。更多地了解双叶草在盐度条件下的形态生理特征,以及萌发和幼苗耐盐指数的比较,也有助于最有效的管理。为了研究盐胁迫下联缕草的萌发和幼苗生长特性,分别进行了两个试验。材料和方法:采用完全随机设计,在5、20、25、30、35和dS 9个盐度胁迫水平(对照)下进行萌发试验。幼苗试验采用完全随机区组设计,采用5种盐度水平(自来水、10、20、30和40 d)。m -1),并在阿瓦士沙希德·查姆兰大学农学院的无荫温室中复制了三个盆栽。结果:随着盐度的升高,种子发芽率和发芽指数下降,胚根/子蕊比上升。2周后,幼苗的根、梢特征随盐度的变化而下降。苗期盐度胁迫数据拟合为三参数logistic回归,盐度水平高于7.86 dS。M -1导致公差指数降低50%。结果表明:19.84 d。M -1使萌发期耐药指数降低50%。耐盐指数在生育期有充分的变化,萌发期对盐的耐受性是苗期的3倍左右。结论:在25和20 dS浓度下,发芽期胚根/子芽比和幼苗期根侧枝比均显著增加。分别是M -1。在盐度增加的情况下,根面积和枝条的维持似乎是联花耐盐的一种可接受的机制。根据三参数logistic模型,估计花栗草在萌发期和幼苗期的耐盐性分别为20和8 d。分别是M -1。
{"title":"Germination and Some Morphophysiological Traits of Convolvulus arvensis in Response to Salinity Stress","authors":"Azam Jamshidizadeh, Masoumeh Farzaneh, A. R. Ghahfarokhi, F. Nasernakhaei","doi":"10.52547/yujs.7.2.89","DOIUrl":"https://doi.org/10.52547/yujs.7.2.89","url":null,"abstract":"Introduction: because the most and Binweed Convolvulus arvensis L.) is the ten widespread noxious in the that it is reproduced by seed, horizontal lateral root, and rhizome. Because of the extensive underground root system of the bindweed with abundant buds and established root reserves, binweed competes more tolerant than crops under salinity and drought stress. More information on morphophysiological traits of binweed under salinity conditions and comparison of salinity tolerance index between germination and seedling can also be contributed to the most effective management. In order to investigate the germination and seedling growth characteristics of binweed two experiments were conducted separately under salinity stress. Materials and Methods : Germination experiment was done in a completely randomized design with 9 levels of salinity stresses (control), 5, 20, 25, 30, 35, and dS.m -1 four the The seedling experiment was performed in a random complete block design consisted of five levels of salinity (tap water, 10, 20, 30, and 40 dS.m -1 ) with three replications as the pot in a non-shade greenhouse of Agricultural College of Shahid Chamran University of Ahvaz. Results: The results showed that with raising salinity, percentage germination and vigure index of seed declined, but Radicle/ Plumule ratio rose. After two weeks, in response to salinity a decrease in root and shoot characteristics of the seedling was observed. Salinity stress data were fitted to a three-parameter logistic for seedling stage showed that the salinity levels higher than 7.86 dS.m -1 led to 50 percent reduction in tolerance index. It was found that 19.84 dS.m -1 caused 50% decrease in the tolerance index at germination stage. Sufficient tolerance index growth stage variation in response to salinity was found which suggests that bindweed tolerance to salinity at germination stage is about 3 times more than that of seedling stage. Conclusions: Radicle/ plumule ratio at germination stage and root lateral branches at seedling stage increased in concentrations of up to 25 and 20 dS.m -1 , respectively. It seems the maintenance of root area and branches in response to increased salinity provide an acceptable mechanism of salinity tolerance for binweed. According to the three-parameter logistic model, the salinity tolerance of bindweed at germination and seedling stages was estimated at 20 and 8 dS.m -1 , respectively.","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77419551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of Salinity Tolerance in Non-Iranian Primary Tritipyrum Promising Lines with Two Wheat Cultivars in Germination Stage 两个小麦品种萌发期非伊朗初代三联麦耐盐性比较
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.19
Zeinab Pirsalami, A. Masoumiasl, Hossein Shahsevand hasani, M. Dehdari
Introduction: Salinity stress is one of the most important factors in decreasing crop yield. Crossing between cultivars and wild relatives is one of the methods to creating salinity tolerant plants that has led to the creation of new Tritipyrum cereals. Investigation of the effect of salinity stress at the germination stage is a reliable test in assessing salinity tolerance of many species; it reduces percentage and rate germination as well as decreases of root and shoots growth. This research aims to investigate the effects of different levels of salinity stress on germination of promising non-Iranian Tritipyrum lines and two wheat cultivars, Alvand (salinity tolerant) and Ghods (salinity sensitive). Materials and Methods: The experiment was conducted in factorial based on the completely randomized design at the Faculty of Agriculture, Yasouj University. The first factor consisted of 13 Tritipyrum lines and two wheat cultivars and the second factor consisted of different salinity levels (240, 160, 80, 0 mM NaCl). After surface disinfection and seed culture in a petri dish, germination-related traits were measured until the 14 th day. Results: The results showed that by increasing salinity level, germination rate and percentage, root length, shoot length, dry and fresh root weight, and shoot dry weight decreased. The highest percentage (79.79%) 3 , (Ka/b)(Cr/b)F 6, and (Ka/b)(Cr/b)F 3 and La(4B/4D)×(b) and the simple lines La/b, Az/b and St/b were better than others. Therefore, these selected lines can be considered in further complementary studies.
盐碱胁迫是导致作物减产的重要因素之一。栽培品种与野生近缘种的杂交是培育耐盐植物的方法之一,这种方法已经导致了新的tritripyrum谷物的产生。研究萌发期盐胁迫的影响是评估许多物种耐盐性的可靠试验;它降低了发芽率和发芽率,并降低了根和芽的生长。本研究旨在研究不同盐度胁迫对非伊朗tritripyrum小麦品系和耐盐小麦品种Alvand和耐盐小麦品种Ghods萌发的影响。材料与方法:实验采用全随机设计的析因法,在Yasouj大学农学院进行。第一个因素是13个小麦品系和2个小麦品种,第二个因素是不同盐度水平(240、160、80、0 mM NaCl)。表面消毒后,在培养皿中培养种子,测定萌发相关性状,直至第14天。结果:随着盐度水平的提高,芽发芽率和发芽率降低,根长、茎长、干根重、鲜根重和茎干重降低;3、(Ka/b)(Cr/b) f6、(Ka/b)(Cr/b) f3和La(4B/4D)×(b)及单线La/b、Az/b和St/b均优于其他单线(79.79%)。因此,这些选定的系可以在进一步的补充研究中考虑。
{"title":"Comparison of Salinity Tolerance in Non-Iranian Primary Tritipyrum Promising Lines with Two Wheat Cultivars in Germination Stage","authors":"Zeinab Pirsalami, A. Masoumiasl, Hossein Shahsevand hasani, M. Dehdari","doi":"10.52547/yujs.7.2.19","DOIUrl":"https://doi.org/10.52547/yujs.7.2.19","url":null,"abstract":"Introduction: Salinity stress is one of the most important factors in decreasing crop yield. Crossing between cultivars and wild relatives is one of the methods to creating salinity tolerant plants that has led to the creation of new Tritipyrum cereals. Investigation of the effect of salinity stress at the germination stage is a reliable test in assessing salinity tolerance of many species; it reduces percentage and rate germination as well as decreases of root and shoots growth. This research aims to investigate the effects of different levels of salinity stress on germination of promising non-Iranian Tritipyrum lines and two wheat cultivars, Alvand (salinity tolerant) and Ghods (salinity sensitive). Materials and Methods: The experiment was conducted in factorial based on the completely randomized design at the Faculty of Agriculture, Yasouj University. The first factor consisted of 13 Tritipyrum lines and two wheat cultivars and the second factor consisted of different salinity levels (240, 160, 80, 0 mM NaCl). After surface disinfection and seed culture in a petri dish, germination-related traits were measured until the 14 th day. Results: The results showed that by increasing salinity level, germination rate and percentage, root length, shoot length, dry and fresh root weight, and shoot dry weight decreased. The highest percentage (79.79%) 3 , (Ka/b)(Cr/b)F 6, and (Ka/b)(Cr/b)F 3 and La(4B/4D)×(b) and the simple lines La/b, Az/b and St/b were better than others. Therefore, these selected lines can be considered in further complementary studies.","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82714028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Comparison of Ecological Aspects of Seed Germination of Syrian mesquite (Prosopis farcta) Ecotypes of Khuzestan and Fars Provinces 胡齐斯坦省和法尔斯省叙利亚豆科植物种子萌发的生态学比较
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.135
A. Zare, E. Elahifard, Zahra Asadinejad
Introduction: Syrian mesquite is introduced as a weed in wheat and barley fields, saffron, cotton and vegetables, and in orchards. The spread of this weed in different climates raises the question of how much native plant conditions can affect germination characteristics. Therefore, the purpose of this study was to evaluate the effect of native plant conditions on germination characteristics in response to environmental stresses (temperature, salinity, and drought). Materials and Methods: To investigate dormancy elimination and germination response thresholds of two Syrian mesquite ecotypes (Khuzestan and Fars) to environmental factors (temperature, salinity, and drought), four separate experiments were carried out as factorial based on completely block design with three replications at Agricultural Sciences and Natural Resources University of Khuzestan. Treatments included immersion the seeds with concentrated sulfuric acid (96%) (0, 10, 15, 20, 25, and 30 min), different temperature (0, 5, 10, 15, 20, 25, 30, 35, 40, and 45 °C), salinity levels (0, 100, 200, 300, 400, 500, and 600 mM), and different levels of drought stress (0, 0.2, 0.4, 0.6, 0.8, 1 and 1.2 MPa). Results: The time required for immersion of seeds in sulfuric acid to dormancy breaking for two ecotypes was different. The estimated parameters indicated time of immersion in sulfuric acid to reach 50% germination in the Khuzestan ecotype (11.38 min) was longer than the Fars ecotype (8.10 min). The Khuzestan ecotype was also able to germinate (45%) at 40 ° C, whereas germination in the Fars ecotype was stopped at this temperature. Germination rate and cumulative germination percentage at temperatures below 25 ° C were higher in Fars ecotype than in the Khuzestan ecotype. The results of the salinity experiment showed that 50% reduction in seed vigor index, final germination percentage, and germination rate in the Fars ecotype were 167.48, 404.46, and 307.02 mM respectively and in the Khuzestan ecotype were 0.89. 229, 380.16, and 299.57 mM, respectively. For drought treatments, 50% reduction in final germination percentage, seed vigor index, and germination rate in Fars ecotype were -0.50, -0.38, and -0.39 MPa, respectively, and in Khuzestan ecotype were -0.46, -0.46, and -0.50 MPa, respectively. Conclusion: Overall, the results showed that native plant climatic conditions (latitude and longitude, elevation, rainfall, and temperature) can affect the degree of seed dormancy, resistance to environmental stresses such as temperature, salinity, and drought.
简介:叙利亚豆科植物作为杂草被引入小麦和大麦田,藏红花,棉花和蔬菜,以及果园。这种杂草在不同气候下的传播提出了一个问题,即本地植物条件对发芽特性的影响有多大。因此,本研究的目的是评估本地植物条件对环境胁迫(温度、盐度和干旱)下萌发特性的影响。材料与方法:为了研究两种叙利亚牧豆树生态型(Khuzestan和Fars)对环境因子(温度、盐度和干旱)的休眠消除和萌发响应阈值,在Khuzestan农业科学与自然资源大学进行了4个独立的因子试验,基于完全块组设计,3个重复。处理包括浓硫酸(96%)浸泡(0、10、15、20、25和30 min)、不同温度(0、5、10、15、20、25、30、35、40和45℃)、盐度(0、100、200、300、400、500和600 mM)和不同程度的干旱胁迫(0、0.2、0.4、0.6、0.8、1和1.2 MPa)。结果:两生态型种子经硫酸浸泡后休眠时间不同。结果表明,胡齐斯坦生态型种子萌发50%所需的硫酸浸泡时间(11.38 min)比法尔斯生态型种子萌发50%所需的时间(8.10 min)长。Khuzestan生态型在40°C时也能发芽(45%),而Fars生态型在40°C时萌发停止。法尔斯生态型在25℃以下的发芽率和累计发芽率均高于胡齐斯坦生态型。盐度试验结果表明,Fars生态型种子活力指数、最终发芽率和发芽率降低50%,分别为167.48、404.46和307.02 mM, Khuzestan生态型种子活力指数、最终发芽率和发芽率降低50%,分别为0.89 mM。分别为229、380.16、299.57 mM。干旱处理后,Fars生态型的最终发芽率、种子活力指数和发芽率分别降低50%,分别为-0.50、-0.38和-0.39 MPa, Khuzestan生态型的最终发芽率、种子活力指数和发芽率降低50%,分别为-0.46、-0.46和-0.50 MPa。结论:总体而言,本地植物气候条件(经纬度、海拔、降雨量和温度)会影响种子的休眠程度以及对温度、盐度和干旱等环境胁迫的抵抗力。
{"title":"Comparison of Ecological Aspects of Seed Germination of Syrian mesquite (Prosopis farcta) Ecotypes of Khuzestan and Fars Provinces","authors":"A. Zare, E. Elahifard, Zahra Asadinejad","doi":"10.52547/yujs.7.2.135","DOIUrl":"https://doi.org/10.52547/yujs.7.2.135","url":null,"abstract":"Introduction: Syrian mesquite is introduced as a weed in wheat and barley fields, saffron, cotton and vegetables, and in orchards. The spread of this weed in different climates raises the question of how much native plant conditions can affect germination characteristics. Therefore, the purpose of this study was to evaluate the effect of native plant conditions on germination characteristics in response to environmental stresses (temperature, salinity, and drought). Materials and Methods: To investigate dormancy elimination and germination response thresholds of two Syrian mesquite ecotypes (Khuzestan and Fars) to environmental factors (temperature, salinity, and drought), four separate experiments were carried out as factorial based on completely block design with three replications at Agricultural Sciences and Natural Resources University of Khuzestan. Treatments included immersion the seeds with concentrated sulfuric acid (96%) (0, 10, 15, 20, 25, and 30 min), different temperature (0, 5, 10, 15, 20, 25, 30, 35, 40, and 45 °C), salinity levels (0, 100, 200, 300, 400, 500, and 600 mM), and different levels of drought stress (0, 0.2, 0.4, 0.6, 0.8, 1 and 1.2 MPa). Results: The time required for immersion of seeds in sulfuric acid to dormancy breaking for two ecotypes was different. The estimated parameters indicated time of immersion in sulfuric acid to reach 50% germination in the Khuzestan ecotype (11.38 min) was longer than the Fars ecotype (8.10 min). The Khuzestan ecotype was also able to germinate (45%) at 40 ° C, whereas germination in the Fars ecotype was stopped at this temperature. Germination rate and cumulative germination percentage at temperatures below 25 ° C were higher in Fars ecotype than in the Khuzestan ecotype. The results of the salinity experiment showed that 50% reduction in seed vigor index, final germination percentage, and germination rate in the Fars ecotype were 167.48, 404.46, and 307.02 mM respectively and in the Khuzestan ecotype were 0.89. 229, 380.16, and 299.57 mM, respectively. For drought treatments, 50% reduction in final germination percentage, seed vigor index, and germination rate in Fars ecotype were -0.50, -0.38, and -0.39 MPa, respectively, and in Khuzestan ecotype were -0.46, -0.46, and -0.50 MPa, respectively. Conclusion: Overall, the results showed that native plant climatic conditions (latitude and longitude, elevation, rainfall, and temperature) can affect the degree of seed dormancy, resistance to environmental stresses such as temperature, salinity, and drought.","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90040348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantification of the Water Absorption Pattern of Purple Nutsedge (Cyperus rotundus) Tubers and Evaluation of Their Sprouting Behavior in Different Storage Conditions 紫苣苔块茎吸水规律的定量分析及不同贮藏条件下发芽行为的评价
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.107
S. Mijani, M. Rastgoo, A. Ghanbari, M. Mahallati
Extended Abstract Introduction: Tubers are considered as the most important vegetative organs in reproduction of purple nutsedge, as one of the most troublesome weeds worldwide. Therefore, it is great of importance to investigate the properties of the tuber response to the surrounding environment such as absorption and loss of water. Water uptake is the first step in the sprouting process, though the pattern of water uptake by purple nutsedge tubers has not been documented. Loss of water in tubers is one of the potent factors in reducing their ability to sprouting. Three separate experiments were carried out to investigate the absorption and loss of water content of purple nutsedge tubers. Material and Methods: In the first experiment, the tubers were placed in a water bath at temperatures of 10, 20, 30, and 40 ° C. Then, the weight of the tubers was measured at different times (24 till 3600 minutes). The water uptake percentage of tubers at different temperatures was studied by fitting the Peleg model. In the second experiment, the initiation day of sprouting was investigated at constant temperatures of 10, 20, 30, and 40 ° C. In the third experiment, water loss and sprouting percentage of tubers were evaluated in two conditions refrigerator (4° C) and room (22 to 25 ° C). Results: The results showed that the initial water content of tubers was 42% and absorbed 10% extra water after being immersed in water. The water uptake behavior was based on the Peleg model at two stages: (1) rapid uptake (less than 420 minutes (7 hours), and (2) a low uptake with a gentle slope afterward. In the Peleg model, the parameters K 1 (minutes *.%weight -1 ) and K 2 (% -1 ) are water absorption rate and water absorption capacity, respectively. The K 1 parameter was negatively against temperature. The highest and lowest values were 49.56 and 28.55 at 10 and 40 ° C, respectively. On the other hand, the trend of the K 2 was constant (0.1) at 10-30 °C but was 0.08 at 40 °C. The two - parameter Hyperbola model was superior to the Peleg and predicts the highest water absorption and time to 50 percent water absorption parameters. The results showed that sprouting of purple nutsedge tubers at 10, 20, 30, and 40 °C occurred after 14.44, 6.57, 3.24, and 3.12 days, respectively. Keeping the tubers in the room (22-25 °C) and refrigerator (4 °C), sprouting stopped after 3 and 9 months, respectively. The time required for 50% reduction of sprouting in the room and refrigerator was estimated to be 1.3 months (39 days) and 5.12 months (154 days), respectively. The time required for 50% loss weight of tubers in the room and refrigerator was 1.981 months (59 days) and about 6 months (180 days), respectively. Overall, weight loss (water loss) up 11.85%, resulted in 50% reduction in tuber sprouting. Conclusion: Maximum water uptake in tubers occurred in less than 420 minutes (seven hours) at all temperatures. Slow sprouting in tubers at low temperatures is not associated with an obsta
摘要导言:块茎是紫苣苔属植物繁殖过程中最重要的营养器官,是世界上危害最严重的杂草之一。因此,研究块茎对周围环境的响应特性,如水分的吸收和流失,具有重要的意义。吸水是发芽过程的第一步,尽管紫苣苔块茎吸水的模式尚未被记录。块茎中水分的流失是降低其发芽能力的有力因素之一。通过三个不同的试验,研究了紫苣苔块茎对水分的吸收和损失。材料与方法:第一次实验,将块茎置于温度分别为10、20、30、40℃的水浴中,在不同时间(24 ~ 3600分钟)测量块茎重量。通过拟合Peleg模型,研究了不同温度下块茎的吸水率。实验二分别在恒温10、20、30、40℃条件下考察球茎的发芽日。实验三分别在冰箱(4℃)和室温(22 ~ 25℃)两种条件下评估球茎的失水和发芽率。结果表明:球茎浸泡后初始含水量为42%,多吸收10%水分。水吸收行为基于Peleg模型分为两个阶段:(1)快速吸收阶段(少于420分钟(7小时))和(2)低吸收阶段(之后呈平缓坡度)。在Peleg模型中,参数k1 (minutes *。%重量-1)和k2(% -1)分别为吸水率和吸水容量。k1参数与温度呈负相关。在10°C和40°C时,最高值为49.56,最低值为28.55。另一方面,K - 2在10-30℃的变化趋势是恒定的(0.1),而在40℃的变化趋势是0.08。双参数双曲线模型优于Peleg模型,预测了最高吸水率和达到50%吸水率的时间参数。结果表明,在10、20、30和40℃条件下,紫色豆科植物块茎分别在14.44、6.57、3.24和3.12 d后发芽。将块茎放在室温(22-25℃)和冰箱(4℃)中,分别在3个月和9个月后停止发芽。在室内和冰箱中减少50%发芽所需的时间分别为1.3个月(39天)和5.12个月(154天)。块茎50%失重所需的室内和冰箱时间分别为1.981个月(59天)和约6个月(180天)。总体而言,失重(水分损失)增加11.85%,导致块茎发芽减少50%。结论:在所有温度下,块茎的最大吸水时间均小于420分钟(7小时)。低温下块茎发芽缓慢与吸水障碍无关。块茎失去了大约12%的水分,失去了一半的发芽能力。另一方面,研究结果表明,低温(4°C)下的块茎水分流失和发芽能力低于环境温度(22 ~ 25°C)。
{"title":"Quantification of the Water Absorption Pattern of Purple Nutsedge (Cyperus rotundus) Tubers and Evaluation of Their Sprouting Behavior in Different Storage Conditions","authors":"S. Mijani, M. Rastgoo, A. Ghanbari, M. Mahallati","doi":"10.52547/yujs.7.2.107","DOIUrl":"https://doi.org/10.52547/yujs.7.2.107","url":null,"abstract":"Extended Abstract Introduction: Tubers are considered as the most important vegetative organs in reproduction of purple nutsedge, as one of the most troublesome weeds worldwide. Therefore, it is great of importance to investigate the properties of the tuber response to the surrounding environment such as absorption and loss of water. Water uptake is the first step in the sprouting process, though the pattern of water uptake by purple nutsedge tubers has not been documented. Loss of water in tubers is one of the potent factors in reducing their ability to sprouting. Three separate experiments were carried out to investigate the absorption and loss of water content of purple nutsedge tubers. Material and Methods: In the first experiment, the tubers were placed in a water bath at temperatures of 10, 20, 30, and 40 ° C. Then, the weight of the tubers was measured at different times (24 till 3600 minutes). The water uptake percentage of tubers at different temperatures was studied by fitting the Peleg model. In the second experiment, the initiation day of sprouting was investigated at constant temperatures of 10, 20, 30, and 40 ° C. In the third experiment, water loss and sprouting percentage of tubers were evaluated in two conditions refrigerator (4° C) and room (22 to 25 ° C). Results: The results showed that the initial water content of tubers was 42% and absorbed 10% extra water after being immersed in water. The water uptake behavior was based on the Peleg model at two stages: (1) rapid uptake (less than 420 minutes (7 hours), and (2) a low uptake with a gentle slope afterward. In the Peleg model, the parameters K 1 (minutes *.%weight -1 ) and K 2 (% -1 ) are water absorption rate and water absorption capacity, respectively. The K 1 parameter was negatively against temperature. The highest and lowest values were 49.56 and 28.55 at 10 and 40 ° C, respectively. On the other hand, the trend of the K 2 was constant (0.1) at 10-30 °C but was 0.08 at 40 °C. The two - parameter Hyperbola model was superior to the Peleg and predicts the highest water absorption and time to 50 percent water absorption parameters. The results showed that sprouting of purple nutsedge tubers at 10, 20, 30, and 40 °C occurred after 14.44, 6.57, 3.24, and 3.12 days, respectively. Keeping the tubers in the room (22-25 °C) and refrigerator (4 °C), sprouting stopped after 3 and 9 months, respectively. The time required for 50% reduction of sprouting in the room and refrigerator was estimated to be 1.3 months (39 days) and 5.12 months (154 days), respectively. The time required for 50% loss weight of tubers in the room and refrigerator was 1.981 months (59 days) and about 6 months (180 days), respectively. Overall, weight loss (water loss) up 11.85%, resulted in 50% reduction in tuber sprouting. Conclusion: Maximum water uptake in tubers occurred in less than 420 minutes (seven hours) at all temperatures. Slow sprouting in tubers at low temperatures is not associated with an obsta","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82422218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of Optimum Concentration and Time of Pre-Treatment with Plant Growth Regulators on Germination Indices of Catharanthus roseus Seed 植物生长调节剂预处理对花楸种子萌发指标的最佳浓度和时间的确定
Pub Date : 2021-03-10 DOI: 10.52547/yujs.7.2.191
M. Ababaf, H. Omidi, A. Bakhshandeh
Introduction: Catharanthus roseus is regarded as a medicinal ornamental plant. This plant has anti-cancer, anti-hypertensive, anti-diabetes, and antimicrobial properties. Catharanthus has a fairly long vegetative period due to its slow initial growth. The long growth period of the plant is considered one of the limitations in its cultivation on a larger scale. By using plant growth regulators such as salicylic acid (SA) in the imbibition phase and pre-treatment, an increase in seed activity and the seedling growth of many crops is observable. Also, jasmonic acid (JA) plant growth regulators play an important role in seed germination and plant growth. Regarding the long growth period of this plant, the small size of the seed, and poor establishment in the field with semi-heavy and heavy textured soils, the present study aimed to evaluate the effect of seed priming with SA and JA in different concentrations and periods on improving Catharanthus roseus seed germination indices. Materials and Methods: The studies were conducted as a factorial experiment based on a completely randomized design with three replications at the Laboratory of Seed Science and Technology of Shahed University, Tehran, in 2017. Treatments included five different concentrations of SA (0, 0.01, 0.1, 0.5, and 1 mM), concentrations of JA (0, 1, 10, and 100 µM) and five periods of time (0, 6, 12, 24, and 48 hours). At the end of the experiment (10 days) traits such as germination percentage, germination rate, mean germination time , mean daily germination, germination value, seed length vigor index, seed weight vigor index, seedling dry weight , shoot dry weight, radicle dry weight , radicle length , shoot length, and seedling length were measured. Results: The results indicated that the effect SA, JA, and time were significant on germination percentage, germination speed, mean germination time, mean daily germination, germination value, seedling length , seedling length vigor index , seedling weight vigor index, and radicle dry weight. The best times for pre-treatment with SA were 24 and 48 hours. Among the applied concentrations of SA, 0.5 and 1 mM concentrations showed the best results. Also, the best time and concentration for pre-treatment with JA were 12 and 24 hours and 10 µM. Conclusions: The results of this study showed that using SA and JA for seed priming improved seed germination components. In addition to the pre-treatment concentrations of SA and JA, the duration of seed contact with growth regulators is important. It was observed that there was a significant difference among the different priming times, therefore, it can be stated that seed pre-treatment time is one of the important factors of seed priming, and the determination of proper priming time prevented the negative effect of pretreatment on germination and seedling growth in primed seeds.
简介:玫瑰花是一种药用观赏植物。这种植物具有抗癌、抗高血压、抗糖尿病和抗菌特性。花楸属植物初期生长缓慢,营养期较长。这种植物的长生长期被认为是其大规模栽培的限制之一。通过在吸胀期和预处理时使用水杨酸等植物生长调节剂,可以观察到许多作物的种子活性和幼苗生长的增加。茉莉酸(jasmonic acid, JA)植物生长调节剂在种子萌发和植物生长中起着重要作用。针对花楸属植物生长期长,种子体积小,在半重质和重质土壤条件下成活率差的特点,研究了不同浓度和不同时期的SA和JA对花楸种子萌发指标的影响。材料与方法:本研究于2017年在德黑兰沙赫德大学种子科学与技术实验室进行,采用完全随机设计、3个重复的析因试验。处理包括5种不同浓度的SA(0、0.01、0.1、0.5和1 mM)、JA(0、1、10和100µM)和5个时间段(0、6、12、24和48小时)。试验结束(10 d),测定发芽率、发芽率、平均萌发时间、平均日发芽率、萌发值、种子长活力指数、种子重活力指数、幼苗干重、茎干重、胚根干重、胚根长、茎长、幼苗长等性状。结果:SA、JA和时间对发芽率、发芽速度、平均发芽时间、平均日发芽率、发芽值、苗长、苗长活力指数、苗重活力指数和胚根干重有显著影响。SA预处理的最佳时间为24h和48h。在SA施用浓度中,0.5 mM和1 mM的效果最好。JA预处理的最佳时间和浓度分别为12、24 h和10µM。结论:本研究结果表明,SA和JA对种子萌发成分有促进作用。除了SA和JA的预处理浓度外,种子与生长调节剂接触的时间也很重要。不同启动时间对种子萌发和幼苗生长的影响有显著差异,说明种子预处理时间是种子启动的重要因素之一,确定合适的启动时间可以防止预处理对启动种子萌发和幼苗生长的负面影响。
{"title":"Determination of Optimum Concentration and Time of Pre-Treatment with Plant Growth Regulators on Germination Indices of Catharanthus roseus Seed","authors":"M. Ababaf, H. Omidi, A. Bakhshandeh","doi":"10.52547/yujs.7.2.191","DOIUrl":"https://doi.org/10.52547/yujs.7.2.191","url":null,"abstract":"Introduction: Catharanthus roseus is regarded as a medicinal ornamental plant. This plant has anti-cancer, anti-hypertensive, anti-diabetes, and antimicrobial properties. Catharanthus has a fairly long vegetative period due to its slow initial growth. The long growth period of the plant is considered one of the limitations in its cultivation on a larger scale. By using plant growth regulators such as salicylic acid (SA) in the imbibition phase and pre-treatment, an increase in seed activity and the seedling growth of many crops is observable. Also, jasmonic acid (JA) plant growth regulators play an important role in seed germination and plant growth. Regarding the long growth period of this plant, the small size of the seed, and poor establishment in the field with semi-heavy and heavy textured soils, the present study aimed to evaluate the effect of seed priming with SA and JA in different concentrations and periods on improving Catharanthus roseus seed germination indices. Materials and Methods: The studies were conducted as a factorial experiment based on a completely randomized design with three replications at the Laboratory of Seed Science and Technology of Shahed University, Tehran, in 2017. Treatments included five different concentrations of SA (0, 0.01, 0.1, 0.5, and 1 mM), concentrations of JA (0, 1, 10, and 100 µM) and five periods of time (0, 6, 12, 24, and 48 hours). At the end of the experiment (10 days) traits such as germination percentage, germination rate, mean germination time , mean daily germination, germination value, seed length vigor index, seed weight vigor index, seedling dry weight , shoot dry weight, radicle dry weight , radicle length , shoot length, and seedling length were measured. Results: The results indicated that the effect SA, JA, and time were significant on germination percentage, germination speed, mean germination time, mean daily germination, germination value, seedling length , seedling length vigor index , seedling weight vigor index, and radicle dry weight. The best times for pre-treatment with SA were 24 and 48 hours. Among the applied concentrations of SA, 0.5 and 1 mM concentrations showed the best results. Also, the best time and concentration for pre-treatment with JA were 12 and 24 hours and 10 µM. Conclusions: The results of this study showed that using SA and JA for seed priming improved seed germination components. In addition to the pre-treatment concentrations of SA and JA, the duration of seed contact with growth regulators is important. It was observed that there was a significant difference among the different priming times, therefore, it can be stated that seed pre-treatment time is one of the important factors of seed priming, and the determination of proper priming time prevented the negative effect of pretreatment on germination and seedling growth in primed seeds.","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"148 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82952442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving the Emergence, Growth and Some Physiological Parameters of Canola (Brassica napus) by Leaching of Allelopathic Compounds of Soybean, Black Cumin, Dragonhead and Dill Residue 大豆、黑孜然、龙头和莳萝渣化感物质浸出对油菜出苗、生长及某些生理参数的影响
Pub Date : 2020-09-01 DOI: 10.29252/YUJS.7.1.23
M. Rostami, S. Fallah, A. A. Surki, Mohammad Rafieoalhosseini
Extended Abstract Introduction: Plants release much of bioactive chemicals from different parts such as leaves, stems and roots through different mechanisms to their surrounding environement. These biologically active chemicals are often referred to as "allelochemicals". Allelopathic compounds play a major role in reducing germination and the growth of crops. Materials and methods: In this study, the effect of leaching on the reduction of phytotoxicity effect of soybean, black cumin, dragonhead and dill was investigated on the emergence and early growth of canola ( Brassica napus L.). The experiment was conducted as factorial based on a completely randomized design with four replications in 2016. Treatments included four previous crop residue (soybean, black cumin, dragonhead, and dill), and three levels of leaching (without leaching, one-time leaching, and two-times leaching). The leaching-free treatment (control) was sub-irrigated to maintain the uniformity of environment moisture. Five days after the first leaching, the two leaching treatment was irrigated again. Five days after the second leaching, when the soil moisture was suitable for seed planting, 10 seeds of canola were cultivated in each pot at a depth of 3 cm of soil. After three weeks seedlings of canola were removed from the pot and the traits were measured. Results: The results showed that the growth characteristics of canola, except root length, were affected by the residues of the previous crop. In non-leaching conditions, the residue of the four plants reduced the rate and amount of canola emergence, and the greatest reduction in canola emergence was recorded for the application of black cumin residue (7.5%). In the leaching conditions, the length of canola leaves increased, which was higher in the twice leaching treatment. This trend shows that as the amount of leaching frequency increased, it is highly likely that more inhibitiing materials leave the soil and conditions become suitable for canola germination and growth.. The highest dry weight of canola root was observed in one-time leaching treatment. The dry weight of canola leaf grown in dill and soybean residues was increased as a result of one-time leaching, whereas the dry weight of canola grown in black cumin and dragonhead residues showed a higher increase in two-times leaching. Results show that four studied plants have canola growth inhibiting compounds and leaching can ameliorate this effect. The response of canola in the soil containing black cumin and dragonhead residues is higher in two-times leaching, and in the soil containing plant residues dill, one-time leaching is sufficient. In soils containing soybean residue, the response index was almost similar in case of one and two-times leaching. Conclusion: Generally, the results showed that the application of leaching before planting canola reduced the inhibitory effects of plant residue on germination and growth of canola. Therefore, it is suggested that in the a
植物的叶、茎、根等不同部位通过不同的机制向周围环境释放大量的生物活性化学物质。这些具有生物活性的化学物质通常被称为“化感化学物质”。化感化合物在降低作物发芽和生长方面起着重要作用。材料与方法:研究了浸出对大豆、黑孜然、龙头和莳萝对油菜出苗和早期生长的毒性影响。实验采用全随机设计,于2016年进行4次重复。处理包括四种以前的作物残留物(大豆、黑孜然、龙头和莳萝)和三个水平的浸出(不浸出、一次浸出和两次浸出)。无淋滤处理(对照)采用二次灌溉,保持环境水分均匀性。第一次浸出5 d后,再进行二次浸出处理。第二次淋滤后5 d,当土壤湿度适宜播种时,每盆种植10粒油菜籽,深度为3 cm。三周后,将油菜籽苗从花盆中取出,并测量其性状。结果:油菜除根长外,其他生长性状均受前茬残茬影响。在非淋滤条件下,4种植物的残茬均降低了油菜出苗率和出苗量,其中施用黑孜然残茬的油菜出苗率降低幅度最大(7.5%)。在浸出条件下,油菜叶片长度增加,两次浸出处理的叶片长度增加。这一趋势表明,随着浸出次数的增加,很可能有更多的抑制物质离开土壤,条件变得适合油菜的发芽和生长。一次性浸出处理的油菜籽根干重最高。在莳萝和大豆残渣中生长的油菜籽叶片干重在一次浸出后显著增加,而在黑孜然和龙头残渣中生长的油菜籽叶片干重在两次浸出后显著增加。结果表明,四种被研究植物都含有抑制油菜籽生长的化合物,浸出可以改善这种作用。油菜籽在含有黑孜然和龙头残渣的土壤中,两次浸出反应较高,而在含有植物残渣的土壤中,一次浸出就足够了。在含豆渣的土壤中,1次淋滤和2次淋滤的响应指数基本相同。结论:总体上看,油菜种植前施用浸出液可以降低植物残渣对油菜发芽和生长的抑制作用。因此,建议在轮作有油菜籽的农业生态系统中,应避免在大豆、黑孜然、龙头和莳荽渣存在的情况下种植油菜籽,以消除其对油菜籽生长的抑制作用。在限水地区,秋季降雨可以起到淋滤作用,降低化感物质的作用。如果不能浸出,则必须避免在这些植物的残留物中种植油菜籽。
{"title":"Improving the Emergence, Growth and Some Physiological Parameters of Canola (Brassica napus) by Leaching of Allelopathic Compounds of Soybean, Black Cumin, Dragonhead and Dill Residue","authors":"M. Rostami, S. Fallah, A. A. Surki, Mohammad Rafieoalhosseini","doi":"10.29252/YUJS.7.1.23","DOIUrl":"https://doi.org/10.29252/YUJS.7.1.23","url":null,"abstract":"Extended Abstract Introduction: Plants release much of bioactive chemicals from different parts such as leaves, stems and roots through different mechanisms to their surrounding environement. These biologically active chemicals are often referred to as \"allelochemicals\". Allelopathic compounds play a major role in reducing germination and the growth of crops. Materials and methods: In this study, the effect of leaching on the reduction of phytotoxicity effect of soybean, black cumin, dragonhead and dill was investigated on the emergence and early growth of canola ( Brassica napus L.). The experiment was conducted as factorial based on a completely randomized design with four replications in 2016. Treatments included four previous crop residue (soybean, black cumin, dragonhead, and dill), and three levels of leaching (without leaching, one-time leaching, and two-times leaching). The leaching-free treatment (control) was sub-irrigated to maintain the uniformity of environment moisture. Five days after the first leaching, the two leaching treatment was irrigated again. Five days after the second leaching, when the soil moisture was suitable for seed planting, 10 seeds of canola were cultivated in each pot at a depth of 3 cm of soil. After three weeks seedlings of canola were removed from the pot and the traits were measured. Results: The results showed that the growth characteristics of canola, except root length, were affected by the residues of the previous crop. In non-leaching conditions, the residue of the four plants reduced the rate and amount of canola emergence, and the greatest reduction in canola emergence was recorded for the application of black cumin residue (7.5%). In the leaching conditions, the length of canola leaves increased, which was higher in the twice leaching treatment. This trend shows that as the amount of leaching frequency increased, it is highly likely that more inhibitiing materials leave the soil and conditions become suitable for canola germination and growth.. The highest dry weight of canola root was observed in one-time leaching treatment. The dry weight of canola leaf grown in dill and soybean residues was increased as a result of one-time leaching, whereas the dry weight of canola grown in black cumin and dragonhead residues showed a higher increase in two-times leaching. Results show that four studied plants have canola growth inhibiting compounds and leaching can ameliorate this effect. The response of canola in the soil containing black cumin and dragonhead residues is higher in two-times leaching, and in the soil containing plant residues dill, one-time leaching is sufficient. In soils containing soybean residue, the response index was almost similar in case of one and two-times leaching. Conclusion: Generally, the results showed that the application of leaching before planting canola reduced the inhibitory effects of plant residue on germination and growth of canola. Therefore, it is suggested that in the a","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87915783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Breaking Seed Dormancy of Camelthorn (Alhagi maurorum) Using Different Treatments and Salinity Tolerance Threshold Level Evaluation at Germination Stage 不同处理解除驼刺种子休眠及萌发期耐盐阈值评价
Pub Date : 2020-09-01 DOI: 10.29252/YUJS.7.1.181
هادی پیراسته انوشه
Introduction: Camelthorn ( Alhagi maurorum ) has a high tolerance to salt and water stresses, and its forage quality is greater than cereal straw and is equal to alfalfa. Seeds of camelthorn do not germinate easily due to the hard seed coat. Therefore, camelthorn cultivation as an agricultural crop needs more research, especially on breaking seed dormancy and increasing germination. Despite numerous studies about camelthorn as a weed, there are few studies on evaluating agronomic factors of camelthorn as a field crop. Hence, in this study, some aspects of germination and salinity tolerance of camelthorn were examined. Materials and Methods: In this research, different aspects of camelthorn germination were examined at the National Salinity Research Center in 2018. In the first experiment, different pretreatments including control, sandpaper, hydro-priming, hot water, and sulphuric acid were assessed. With the selection of sulphuric acid as the best treatment, varying durations (0, 5, 10, 15, 20, and 25 min) and concentrations (98% and 75%) of sulphuric acid priming were compared in the second and third experiments. In the fourth experiment, the seeds collected in 2018 were compared with the seeds collected in 2017 and 2016. The effect of different salt stress levels (0, 6, 12, 18, 24, 30, and 36 dS m -1 ) was evaluated on camelthorn germination and early growth in the fifth experiment. In the sixth experiment, lighting regimes including continuous dark, continuous light, and an alternative period of dark- light were examined and in the seventh experiment sibling factors (together and individual seeds) were evaluated. Seed germination and seedling length were calculated and salinity tolerance threshold levels and 50% reduction threshold were estimated. Results: The results of the first experiment showed that the highest germination percentage was obtained in sulphuric acid priming (56.6%), which was six folds greater than the control. In the second experiment, it was shown that the highest germination percentage (81.1%) and seedling growth (5.7 cm) was observed in sulphuric acid priming 98% for 25 min. Important note was that these results were related to domestically produced sulphuric acid, and the highest germination and seedling growth were observed in 75% concentration for the imported sulphuric acid. In the fourth experiment, it was found that at least 3 years of seed longevity had no significant effect on seed germination. Considerable losses in germination and growth were observed from 30 dS m -1 salinity level; however, germination did not completely stop even at 36 dS m -1 salinity. In the sixth and the seventh experiments, it was found that there were no significant differences between seeds germination in the continuous dark, continuous light, and an alternative period of dark- light as well as between individual and together seeds. So, camelthorn seed is not photoblastic and had no negative sibling factor. in the germination stage, it
导读:骆驼刺(Alhagi maurorum)对盐和水胁迫具有较高的耐受性,其饲料品质大于谷类秸秆,与苜蓿相当。由于种皮坚硬,骆驼刺的种子不易发芽。因此,作为一种农业作物的骆驼刺栽培需要更多的研究,特别是在打破种子休眠和提高种子萌发方面的研究。尽管关于骆驼刺作为一种杂草的研究很多,但关于骆驼刺作为一种大田作物的农艺因素评价的研究很少。因此,在本研究中,研究了骆驼刺发芽和耐盐性的一些方面。材料与方法:本研究于2018年在国家盐度研究中心对驼刺萌发的不同方面进行了研究。在第一个实验中,评估了不同的预处理方法,包括对照、砂纸、水浸、热水和硫酸。选择硫酸作为最佳处理,在第二和第三个实验中比较不同的硫酸启动时间(0、5、10、15、20和25 min)和浓度(98%和75%)。在第四次试验中,将2018年收集的种子与2017年和2016年收集的种子进行比较。在第五次试验中,研究了不同盐胁迫水平(0、6、12、18、24、30和36 dS m -1)对骆驼刺萌发和早期生长的影响。在第六个实验中,光照制度包括连续黑暗、连续光照和暗-光交替时期,在第七个实验中,兄弟因子(一起和单个种子)被评估。计算种子发芽率和幼苗长度,估计耐盐阈值和50%还原阈值。结果:第一次试验结果表明,硫酸处理发芽率最高,为56.6%,是对照的6倍;第二个试验表明,在硫酸浓度为98%的条件下,萌发率最高(81.1%),幼苗长势最高(5.7 cm)。值得注意的是,这些结果与国产硫酸有关,进口硫酸浓度为75%时,萌发率和幼苗长势最高。在第4次试验中,发现至少3年的种子寿命对种子萌发没有显著影响。在30 dS m -1盐度水平下,种子萌发和生长损失较大;然而,即使在36 dS m -1盐度下,发芽也没有完全停止。在第6次和第7次实验中,发现种子在连续黑暗、连续光照和暗-光交替时期的萌发率以及单独种子和组合种子之间的萌发率没有显著差异。因此,骆驼刺种子不具有光敏性,也没有负的兄弟因子。在萌发阶段,建议在盐培养系统中进行更多的研究。
{"title":"Breaking Seed Dormancy of Camelthorn (Alhagi maurorum) Using Different Treatments and Salinity Tolerance Threshold Level Evaluation at Germination Stage","authors":"هادی پیراسته انوشه","doi":"10.29252/YUJS.7.1.181","DOIUrl":"https://doi.org/10.29252/YUJS.7.1.181","url":null,"abstract":"Introduction: Camelthorn ( Alhagi maurorum ) has a high tolerance to salt and water stresses, and its forage quality is greater than cereal straw and is equal to alfalfa. Seeds of camelthorn do not germinate easily due to the hard seed coat. Therefore, camelthorn cultivation as an agricultural crop needs more research, especially on breaking seed dormancy and increasing germination. Despite numerous studies about camelthorn as a weed, there are few studies on evaluating agronomic factors of camelthorn as a field crop. Hence, in this study, some aspects of germination and salinity tolerance of camelthorn were examined. Materials and Methods: In this research, different aspects of camelthorn germination were examined at the National Salinity Research Center in 2018. In the first experiment, different pretreatments including control, sandpaper, hydro-priming, hot water, and sulphuric acid were assessed. With the selection of sulphuric acid as the best treatment, varying durations (0, 5, 10, 15, 20, and 25 min) and concentrations (98% and 75%) of sulphuric acid priming were compared in the second and third experiments. In the fourth experiment, the seeds collected in 2018 were compared with the seeds collected in 2017 and 2016. The effect of different salt stress levels (0, 6, 12, 18, 24, 30, and 36 dS m -1 ) was evaluated on camelthorn germination and early growth in the fifth experiment. In the sixth experiment, lighting regimes including continuous dark, continuous light, and an alternative period of dark- light were examined and in the seventh experiment sibling factors (together and individual seeds) were evaluated. Seed germination and seedling length were calculated and salinity tolerance threshold levels and 50% reduction threshold were estimated. Results: The results of the first experiment showed that the highest germination percentage was obtained in sulphuric acid priming (56.6%), which was six folds greater than the control. In the second experiment, it was shown that the highest germination percentage (81.1%) and seedling growth (5.7 cm) was observed in sulphuric acid priming 98% for 25 min. Important note was that these results were related to domestically produced sulphuric acid, and the highest germination and seedling growth were observed in 75% concentration for the imported sulphuric acid. In the fourth experiment, it was found that at least 3 years of seed longevity had no significant effect on seed germination. Considerable losses in germination and growth were observed from 30 dS m -1 salinity level; however, germination did not completely stop even at 36 dS m -1 salinity. In the sixth and the seventh experiments, it was found that there were no significant differences between seeds germination in the continuous dark, continuous light, and an alternative period of dark- light as well as between individual and together seeds. So, camelthorn seed is not photoblastic and had no negative sibling factor. in the germination stage, it","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91275084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of salicylic acid priming on seed germination and morphophysiological and biochemical characteristics of tomato seedling (Lycopersicom esculentun) 水杨酸对番茄种子萌发及幼苗形态生理生化特性的影响
Pub Date : 2020-09-01 DOI: 10.29252/YUJS.7.1.165
L. Karami, M. Hedayat, Somayeh Farahbakhsh
Introduction: Seed germination is a complex and dynamic stage of plant growth, and seed priming is a technique by which the seeds obtain germination potential physiologically and biochemically before being placed on growth media and facing the ecological conditions of the environment. Seed priming increases yield and antioxidant enzymes in plants by increasing germination and seed vigor and as a result, increases percentage of germination. Several studies have investigated the effect of seed priming with organic materials including salicylic acid on improving seed germination in various plant species. Research results have shown that salicylic acid can be used as a growth regulator to increase the germination of plants. Tomato, with scientific name of Lycopersicon esculentum (Mill), belongs to the Solanaceae family and is widely adapted to different climatic and soil conditions. The aim of this study was to evaluate the effect of different concentrations of Salicylic acid on seed germination and some factors of morphophysiologic and biochemical traits of tomato seedlings. Materials and methods : This research was conducted as factorial in a completely randomized design, including priming treatment in 3 time frames (12, 18 and 24 hours) with three replications. Priming treatments consisted of salicylic acid (2, 2.5 and 3 mg/l) and distilled water. The measured traits were germination parameters including percentage, time, rate, and uniformity of germination and morphological traits including transplant height, crown diameter, root length, leaf number, and leaf area, shoot and root fresh and dry weight and biochemical traits including chlorophyll, peroxidase enzyme, proline, total nitrogen, potassium, calcium, phosphorus, and sodium. Results : The favorable effect of salicylic acid was obtained at the concentration of 3 mg/l on mean germination time compared to the distilled water. The positive effect of salicylic acid was observed on transplant height and leaf area (at the concentration of 3 mg/l at 18 and 24 hours’ time frame), shoot and root fresh and dry weight (at 24 hours) compared to the control. Immersion in distilled water for a period of 12 and 24 hours resulted in the highest root length, while salicylic acid treatment reduced root length significantly. The highest transplant height (14.3 cm), leaf number (34), chlorophyll index (59), peroxidase enzyme (10873 unit/g.min -1 ), total nitrogen (2.89%), potassium (9.81%), and proline content (14.80 µM/g fresh weight) were observed in 24 hours treatment with concentration of 3 mg / l salicylic acid. Conclusion : According to the results of this study, salicylic acid at certain concentration improves seeds germination of tomato plants through the regulation of physiologic and biochemical processes. It seems that salicylic acid led to increase in plant growth and improvement of seed germination and morphophysiological parameters of the tomato via affecting cell growth and division. Seed priming
种子萌发是植物生长过程中一个复杂而动态的阶段,而种子萌发是种子置于生长介质上,面对环境生态条件之前,通过生理生化途径获得萌发势的一种技术。种子灌浆通过提高种子萌发率和种子活力来提高植物的产量和抗氧化酶,从而提高发芽率。一些研究研究了水杨酸等有机物质对不同植物种子萌发的影响。研究结果表明,水杨酸可以作为一种生长调节剂,提高植物的发芽率。番茄,学名Lycopersicon esculentum (Mill),属于茄科,广泛适应不同的气候和土壤条件。本试验旨在探讨不同浓度水杨酸对番茄种子萌发及幼苗形态生理生化性状的影响。材料和方法:本研究采用全随机设计,分3个时间段(12、18和24小时)进行启动处理,重复3次。水杨酸(2、2.5和3 mg/l)和蒸馏水处理。测定的性状包括发芽率、发芽时间、发芽速率、发芽均匀性等,形态性状包括移栽高度、冠径、根长、叶数、叶面积、茎和根鲜干重等,生化性状包括叶绿素、过氧化物酶、脯氨酸、总氮、钾、钙、磷、钠等。结果:与蒸馏水相比,水杨酸浓度为3 mg/l时对平均发芽时间的影响更大。与对照相比,水杨酸对移栽高度和叶面积(浓度为3 mg/l,处理18和24 h)、茎部和根鲜重和干重(处理24 h)均有积极影响。在蒸馏水中浸泡12和24小时的根长最高,而水杨酸处理显著降低了根长。最高移栽高度(14.3 cm),叶片数(34),叶绿素指数(59),过氧化物酶(10873单位/g)。浓度为3 mg / l的水杨酸处理24 h,总氮(2.89%)、钾(9.81%)和脯氨酸含量(14.80µM/g鲜重)均显著提高。结论:根据本研究结果,一定浓度的水杨酸通过调节番茄植株的生理生化过程促进种子萌发。结果表明,水杨酸通过影响番茄细胞的生长和分裂,促进了番茄植株的生长,改善了番茄种子的萌发和形态生理参数。浓度为3 mg/l且时间较长的水杨酸催种对大部分性状均有正向影响,但各性状的催种效果与催种时间有关。通过影响番茄幼苗的形态生理生化特性,作为适宜的前处理,以生产出具有较好数量和质量特征的幼苗。
{"title":"Effect of salicylic acid priming on seed germination and morphophysiological and biochemical characteristics of tomato seedling (Lycopersicom esculentun)","authors":"L. Karami, M. Hedayat, Somayeh Farahbakhsh","doi":"10.29252/YUJS.7.1.165","DOIUrl":"https://doi.org/10.29252/YUJS.7.1.165","url":null,"abstract":"Introduction: Seed germination is a complex and dynamic stage of plant growth, and seed priming is a technique by which the seeds obtain germination potential physiologically and biochemically before being placed on growth media and facing the ecological conditions of the environment. Seed priming increases yield and antioxidant enzymes in plants by increasing germination and seed vigor and as a result, increases percentage of germination. Several studies have investigated the effect of seed priming with organic materials including salicylic acid on improving seed germination in various plant species. Research results have shown that salicylic acid can be used as a growth regulator to increase the germination of plants. Tomato, with scientific name of Lycopersicon esculentum (Mill), belongs to the Solanaceae family and is widely adapted to different climatic and soil conditions. The aim of this study was to evaluate the effect of different concentrations of Salicylic acid on seed germination and some factors of morphophysiologic and biochemical traits of tomato seedlings. Materials and methods : This research was conducted as factorial in a completely randomized design, including priming treatment in 3 time frames (12, 18 and 24 hours) with three replications. Priming treatments consisted of salicylic acid (2, 2.5 and 3 mg/l) and distilled water. The measured traits were germination parameters including percentage, time, rate, and uniformity of germination and morphological traits including transplant height, crown diameter, root length, leaf number, and leaf area, shoot and root fresh and dry weight and biochemical traits including chlorophyll, peroxidase enzyme, proline, total nitrogen, potassium, calcium, phosphorus, and sodium. Results : The favorable effect of salicylic acid was obtained at the concentration of 3 mg/l on mean germination time compared to the distilled water. The positive effect of salicylic acid was observed on transplant height and leaf area (at the concentration of 3 mg/l at 18 and 24 hours’ time frame), shoot and root fresh and dry weight (at 24 hours) compared to the control. Immersion in distilled water for a period of 12 and 24 hours resulted in the highest root length, while salicylic acid treatment reduced root length significantly. The highest transplant height (14.3 cm), leaf number (34), chlorophyll index (59), peroxidase enzyme (10873 unit/g.min -1 ), total nitrogen (2.89%), potassium (9.81%), and proline content (14.80 µM/g fresh weight) were observed in 24 hours treatment with concentration of 3 mg / l salicylic acid. Conclusion : According to the results of this study, salicylic acid at certain concentration improves seeds germination of tomato plants through the regulation of physiologic and biochemical processes. It seems that salicylic acid led to increase in plant growth and improvement of seed germination and morphophysiological parameters of the tomato via affecting cell growth and division. Seed priming","PeriodicalId":14578,"journal":{"name":"Iranian Journal of Seed Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81538645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Iranian Journal of Seed Research
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1