Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.1.06
ZhengSheng Li, Y. Liu
Seed priming can alleviate the negative effects of drought stress. The present study focused on exploring the effects of seed priming, drought and their interaction on the germination characteristics of Corethrodendron multijugum. We attempted to standardise an appropriate priming method for C. multijugum seeds by comparing the effects of various priming methods and drought stress on seed germination and seedling establishment to provide theoretical basis and technical support for subsequent cultivation and production. The results indicated that seed priming, drought stress and their interaction significantly (P < 0.01) affected all seed germination parameters and seedling establishment parameters, and germination was significantly (P < 0.05) correlated with early seedling establishment under drought stress. Of the different priming agents used in this study, water, 0.5% KMnO4, 0.3% H2O2 and 5% PEG-6000 significantly (P < 0.05) promoted seed germination and seedling establishment in C. multijugum. Among them, 0.5% KMnO4 was the most effective in alleviating the effects of drought stress on germination and early seedling establishment. Morphologically, the beneficial effects of priming can be attributed to increased seed germination, elongation and biomass accumulation of seedlings.
{"title":"Seed priming stimulates germination and early seedling establishment of Corethrodendron multijugum under drought stress","authors":"ZhengSheng Li, Y. Liu","doi":"10.15258/sst.2023.51.1.06","DOIUrl":"https://doi.org/10.15258/sst.2023.51.1.06","url":null,"abstract":"Seed priming can alleviate the negative effects of drought stress. The present study focused on exploring the effects of seed priming, drought and their interaction on the germination characteristics of Corethrodendron multijugum. We attempted to standardise an appropriate priming method for C. multijugum seeds by comparing the effects of various priming methods and drought stress on seed germination and seedling establishment to provide theoretical basis and technical support for subsequent cultivation and production. The results indicated that seed priming, drought stress and their interaction significantly (P < 0.01) affected all seed germination parameters and seedling establishment parameters, and germination was significantly (P < 0.05) correlated with early seedling establishment under drought stress. Of the different priming agents used in this study, water, 0.5% KMnO4, 0.3% H2O2 and 5% PEG-6000 significantly (P < 0.05) promoted seed germination and seedling establishment in C. multijugum. Among them, 0.5% KMnO4 was the most effective in alleviating the effects of drought stress on germination and early seedling establishment. Morphologically, the beneficial effects of priming can be attributed to increased seed germination, elongation and biomass accumulation of seedlings.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.2.03
R. Chauhan, Satbeer Singh, S. Pandey, Ajay Kumar, M. Kumari, Anil Kumar, A. Thakur, Sanatsujat Singh
Kala zeera (Bunium persicum) is a high-value medicinal spice plant. The seeds and extracts are used for culinary, perfumery, flavouring food and medicinal purposes. The commercial cultivation of kala zeera is hampered due to poor seed germination and deep physiological dormancy. To break the dormancy of kala zeera, three phytohormones, gibberellic acid (100 µmol L-1), 6-benzylaminopurine (10 µmol L-1) and thidiazuron (6.3 µmol L-1) were tested individually and in combination, under two temperature levels: continuous chilling at 4°C and one week chilling at 4°C followed by incubation at room temperature. The combined application of the three phytohormones under continuous chilling (4°C) improved the germination from 11.25 to 93.25% and reduced the mean germination time 60 to 50 days. The lowest mean germination time (34.78 days) and high mean daily germination (1.57 seeds day-1) with a high coefficient of germination velocity (2.88), were found under combined application of phytohormones as compared to their individual application. The findings have implications in successful propagation and systematic cultivation of this high-value medicinal spice plant.
{"title":"Alleviation of seed dormancy in kala zeera (Bunium persicum) through chilling and phytohormones","authors":"R. Chauhan, Satbeer Singh, S. Pandey, Ajay Kumar, M. Kumari, Anil Kumar, A. Thakur, Sanatsujat Singh","doi":"10.15258/sst.2023.51.2.03","DOIUrl":"https://doi.org/10.15258/sst.2023.51.2.03","url":null,"abstract":"Kala zeera (Bunium persicum) is a high-value medicinal spice plant. The seeds and extracts are used for culinary, perfumery, flavouring food and medicinal purposes. The commercial cultivation of kala zeera is hampered due to poor seed germination and deep physiological dormancy. To break the dormancy of kala zeera, three phytohormones, gibberellic acid (100 µmol L-1), 6-benzylaminopurine (10 µmol L-1) and thidiazuron (6.3 µmol L-1) were tested individually and in combination, under two temperature levels: continuous chilling at 4°C and one week chilling at 4°C followed by incubation at room temperature. The combined application of the three phytohormones under continuous chilling (4°C) improved the germination from 11.25 to 93.25% and reduced the mean germination time 60 to 50 days. The lowest mean germination time (34.78 days) and high mean daily germination (1.57 seeds day-1) with a high coefficient of germination velocity (2.88), were found under combined application of phytohormones as compared to their individual application. The findings have implications in successful propagation and systematic cultivation of this high-value medicinal spice plant.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.3.07
Elham Abedi, Ramazan Ali Khavari-Nejad, Laleh Mosharraf, Sara Saadatmand, Hossein Ali Asadi-Gharneh
The aim of this research was to investigate the effectiveness of nano-selenium (nano-Se) on germination properties of vasha ( Dorema ammoniacum ), an endangered medicinal plant in Iran. The experiment was conducted in a completely randomised two-factor, experiment with five concentrations (0, 5, 10, 20, and 40 mg L -1 ) of nano-Se and seed prechilling treatment (4°C). All the germination characteristics, including percentage germination, mean germination and vigour indices were improved by nano-Se treatments ( p < 0.05). Among the treatments, the combination of prechilling and 20 mg L -1 nano-Se conditioning was the best treatment, both in improving germination and the growth characteristics of seedlings. It can be concluded that pretreatment of seeds with nano-Se and prechilling can be used for promoting germination of D. ammoniacum seeds.
本研究旨在研究纳米硒(nano-Se)对伊朗濒危药用植物vasha (Dorema amiacum)萌发特性的影响。实验采用完全随机双因素试验，采用5种浓度(0、5、10、20和40 mg L -1)的纳米硒和4℃的种子预冷处理。纳米硒处理提高了种子的发芽率、平均发芽率和活力指标(p <0.05)。其中，预冷与20 mg L -1纳米硒调质组合处理在提高种子萌发和幼苗生长特性方面效果最好。综上所述，纳米硒预处理和预冷处理可促进菊苣种子萌发。
{"title":"Effect of prechilling and nano-selenium on seed germination of <i>Dorema ammoniacum</i>","authors":"Elham Abedi, Ramazan Ali Khavari-Nejad, Laleh Mosharraf, Sara Saadatmand, Hossein Ali Asadi-Gharneh","doi":"10.15258/sst.2023.51.3.07","DOIUrl":"https://doi.org/10.15258/sst.2023.51.3.07","url":null,"abstract":"The aim of this research was to investigate the effectiveness of nano-selenium (nano-Se) on germination properties of vasha ( Dorema ammoniacum ), an endangered medicinal plant in Iran. The experiment was conducted in a completely randomised two-factor, experiment with five concentrations (0, 5, 10, 20, and 40 mg L -1 ) of nano-Se and seed prechilling treatment (4&deg;C). All the germination characteristics, including percentage germination, mean germination and vigour indices were improved by nano-Se treatments ( p &lt; 0.05). Among the treatments, the combination of prechilling and 20 mg L -1 nano-Se conditioning was the best treatment, both in improving germination and the growth characteristics of seedlings. It can be concluded that pretreatment of seeds with nano-Se and prechilling can be used for promoting germination of D. ammoniacum seeds.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135403799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Salinity is one of the major causes of abiotic stress for plant development and growth worldwide, and affects crop yield significantly. To analyse the level of salinity tolerance among ‘Ji Hong 20’ (JH20), ‘Jin Xiao Dou 5’ (JXD5) and ‘Jin Xiao Dou 6’ (JXD6) adzuki bean cultivars, nine saline levels (0.0, 32.5, 65.0, 97.5, 130.0, 162.5, 195.0, 227.5 and 260.0 mmol L-1 NaCl) were applied during seed germination. Germination potentials and final germination percentages of all cultivars were significantly reduced by NaCl with the level at which germination was affected being dependent on cultivar. The JXD5 seeds had the highest germination index and vigour index at the same NaCl concentrations, followed by the JH20 and then JXD6 seeds. The shoot and root lengths of JH20 and JXD5 were significantly shorter at NaCl concentrations > 65.0 mmol L-1, while those of JXD6 were reduced at salinity > 32.5 mmol L-1. Quadratic regression models could well predict the germination percentage of JH20, JXD5 and JXD6 seeds under saline stress.
{"title":"Effect of saline treatment on seed germination of adzuki beans","authors":"Shuting Han, Kangyu Lu, Tianbing Guo, Ying Zhang, Binbin Wang, Baomei Wu","doi":"10.15258/sst.2023.51.1.04","DOIUrl":"https://doi.org/10.15258/sst.2023.51.1.04","url":null,"abstract":"Salinity is one of the major causes of abiotic stress for plant development and growth worldwide, and affects crop yield significantly. To analyse the level of salinity tolerance among ‘Ji Hong 20’ (JH20), ‘Jin Xiao Dou 5’ (JXD5) and ‘Jin Xiao Dou 6’ (JXD6) adzuki bean cultivars, nine saline levels (0.0, 32.5, 65.0, 97.5, 130.0, 162.5, 195.0, 227.5 and 260.0 mmol L-1 NaCl) were applied during seed germination. Germination potentials and final germination percentages of all cultivars were significantly reduced by NaCl with the level at which germination was affected being dependent on cultivar. The JXD5 seeds had the highest germination index and vigour index at the same NaCl concentrations, followed by the JH20 and then JXD6 seeds. The shoot and root lengths of JH20 and JXD5 were significantly shorter at NaCl concentrations > 65.0 mmol L-1, while those of JXD6 were reduced at salinity > 32.5 mmol L-1. Quadratic regression models could well predict the germination percentage of JH20, JXD5 and JXD6 seeds under saline stress.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.1.11
B. S. Olisa
Seed quality is the basis for differential crop productivity. Seed companies depend on the quality of the seeds for the seed trade, while farmers depend on the quality of the seeds to improve their productivity and secure their livelihood. Germination and varietal identification/purity are fundamental aspects of seed quality that are of prime importance to the global seed trade. Seed germination is influenced by several factors among which are the genetic factors and environmental cues of the prevailing growing conditions where the plant grows. Among these cues, climate change fundamentally affects crop development at all stages, starting from germination and seedling growth, to flowering and fruiting. Several methods have been formulated and validated for the evaluation of the varietal identification/purity for some crops, facilitate synchronised seed germination and enhance uniform field establishment for optimum crop yield in the face of climate change. This issue of Seed Science and Technology includes papers discussing the application of some of the methods, for example, prechilling and the use of exogenous gibberellin to stimulate germination, the use of tetrazolium as a quick viability test for rice seeds, the applied phenol test for varietal identification of rice seeds, and seed priming to enhance germination of Corethrodendron multijugum seeds. In addition, the physiological response of seed to soil salinity and storage environment conditions are also discussed.
{"title":"Editorial: Seed Science and Technology. Volume 51 Issue 1 (2023)","authors":"B. S. Olisa","doi":"10.15258/sst.2023.51.1.11","DOIUrl":"https://doi.org/10.15258/sst.2023.51.1.11","url":null,"abstract":"Seed quality is the basis for differential crop productivity. Seed companies depend on the quality of the seeds for the seed trade, while farmers depend on the quality of the seeds to improve their productivity and secure their livelihood. Germination and varietal identification/purity are fundamental aspects of seed quality that are of prime importance to the global seed trade. Seed germination is influenced by several factors among which are the genetic factors and environmental cues of the prevailing growing conditions where the plant grows. Among these cues, climate change fundamentally affects crop development at all stages, starting from germination and seedling growth, to flowering and fruiting. Several methods have been formulated and validated for the evaluation of the varietal identification/purity for some crops, facilitate synchronised seed germination and enhance uniform field establishment for optimum crop yield in the face of climate change. This issue of Seed Science and Technology includes papers discussing the application of some of the methods, for example, prechilling and the use of exogenous gibberellin to stimulate germination, the use of tetrazolium as a quick viability test for rice seeds, the applied phenol test for varietal identification of rice seeds, and seed priming to enhance germination of Corethrodendron multijugum seeds. In addition, the physiological response of seed to soil salinity and storage environment conditions are also discussed.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This research was carried out to evaluate the effect of (1) different methods of breaking seed dormancy (physical and chemical scarification, high temperature, hot water and after-ripening), and (2) environmental factors (temperature, salinity and water stress) on seed germination of Trifolium angustifolium , T. arvense , T. fragiferum , T. fucatum , T. repens , T. subterraneum and Trifolium sp. All experiments were conducted in the Seed Research Laboratory of Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2021. All the examined clover species were dormant after harvest, with little germination. Mechanical scarification with sandpaper or sulphuric acid resulted in more than 88 and 52% germination, respectively. Seeds were able to germinate between 5 and 35°C, but the highest germination (≥ 98% on average) occurred at 20°C. Fluctuating temperature regimes were more efficient in improving the germination than constant temperatures. Seeds of clover species, in addition to having a hard seed coat, have a non-deep physiological dormancy. Fresh seeds showed a high sensitivity to water stress compared with after-ripened seeds. However, relative resistance to salinity stress was observed. The results obtained in this research can be used to develop effective sowing strategies and support the successful establishment of these clover species.
本文研究了(1)打破种子休眠的不同方法(物理和化学切割、高温、热水和催熟)和(2)环境因子(温度、盐度和水分胁迫)对三叶草(Trifolium angustifolium, T. arvense, T. fragiferum, T. fucatum, T. repens, T. repens)种子萌发的影响。所有实验均于2021年在伊朗戈尔根农业科学与自然资源大学种子研究实验室进行。所有被检查的三叶草品种在收获后都处于休眠状态，很少发芽。用砂纸或硫酸进行机械划伤的结果分别是88%和52%。分别发芽。种子在5 ~ 35℃之间能够发芽，但最高的发芽率为5 ~ 35℃。98年,percnt;(平均)发生在摄氏20度。波动温度比恒定温度更能有效地提高种子的萌发率。三叶草的种子除了有坚硬的种皮外，还有一个不深的生理休眠。鲜种子对水分胁迫的敏感性高于熟后种子。然而，观察到其对盐胁迫的相对抗性。本研究结果可用于制定有效的播种策略，并为三叶草品种的成功建立提供支持。
{"title":"Seed dormancy and germination ecology of several clover species","authors":"Hamed Rezaei-Manesh, Farshid Ghaderi-Far, Iraj Nosratti, Asieh Siahmarguee, Bhagirath S. Chauhan","doi":"10.15258/sst.2023.51.3.06","DOIUrl":"https://doi.org/10.15258/sst.2023.51.3.06","url":null,"abstract":"This research was carried out to evaluate the effect of (1) different methods of breaking seed dormancy (physical and chemical scarification, high temperature, hot water and after-ripening), and (2) environmental factors (temperature, salinity and water stress) on seed germination of Trifolium angustifolium , T. arvense , T. fragiferum , T. fucatum , T. repens , T. subterraneum and Trifolium sp. All experiments were conducted in the Seed Research Laboratory of Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2021. All the examined clover species were dormant after harvest, with little germination. Mechanical scarification with sandpaper or sulphuric acid resulted in more than 88 and 52&percnt; germination, respectively. Seeds were able to germinate between 5 and 35&deg;C, but the highest germination (&ge; 98&percnt; on average) occurred at 20&deg;C. Fluctuating temperature regimes were more efficient in improving the germination than constant temperatures. Seeds of clover species, in addition to having a hard seed coat, have a non-deep physiological dormancy. Fresh seeds showed a high sensitivity to water stress compared with after-ripened seeds. However, relative resistance to salinity stress was observed. The results obtained in this research can be used to develop effective sowing strategies and support the successful establishment of these clover species.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135403766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.3.12
Tamiru Olbana, Alice Muchugi, Yeshi Woldemariam, Fiona R. Hay, Nicholas Ndiwa, Chris S. Jones
Desmanthus virgatus is a perennial forage legume used as a livestock feed source. Seeds of this species are physically dormant and thus, propagation is difficult. The dormancy also impacts the routine viability monitoring of genebank accessions. The present study investigated different methods to break dormancy in seeds collected from various locations at different times. The result showed that most pre-treatments significantly increased germination percentage. Accessions treated with concentrated sulphuric acid (25 or 30 minutes) followed by sandpaper scarification showed the highest proportion of normal seedlings (94.6 and 96%). Boiling water (2.3 or 3 minutes) was also effective in all accessions except for accession 331. However, accessions treated with hot water (3, 5 or 8 minutes) had a considerable proportion of hard seeds. The proportion of dead/abnormal seedlings was high in seeds treated with a hot wire in all accessions, ranging from 27.5 (accession 15489) to 75.5% (accession 16). The untreated seeds remained hard at the final germination count. We conclude that it is important to use concentrated sulphuric acid and mechanical scarification with sandpaper to break the dormancy for the species to enhance germination, obtain uniform field stands and make wise decisions during storage.
{"title":"Overcoming dormancy in <i>Desmanthus virgatu</i> seeds for improved viability monitoring protocols of genebank accessions","authors":"Tamiru Olbana, Alice Muchugi, Yeshi Woldemariam, Fiona R. Hay, Nicholas Ndiwa, Chris S. Jones","doi":"10.15258/sst.2023.51.3.12","DOIUrl":"https://doi.org/10.15258/sst.2023.51.3.12","url":null,"abstract":"Desmanthus virgatus is a perennial forage legume used as a livestock feed source. Seeds of this species are physically dormant and thus, propagation is difficult. The dormancy also impacts the routine viability monitoring of genebank accessions. The present study investigated different methods to break dormancy in seeds collected from various locations at different times. The result showed that most pre-treatments significantly increased germination percentage. Accessions treated with concentrated sulphuric acid (25 or 30 minutes) followed by sandpaper scarification showed the highest proportion of normal seedlings (94.6 and 96%). Boiling water (2.3 or 3 minutes) was also effective in all accessions except for accession 331. However, accessions treated with hot water (3, 5 or 8 minutes) had a considerable proportion of hard seeds. The proportion of dead/abnormal seedlings was high in seeds treated with a hot wire in all accessions, ranging from 27.5 (accession 15489) to 75.5% (accession 16). The untreated seeds remained hard at the final germination count. We conclude that it is important to use concentrated sulphuric acid and mechanical scarification with sandpaper to break the dormancy for the species to enhance germination, obtain uniform field stands and make wise decisions during storage.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136367501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.3.04
Dandan Zhao, Hongyuan Ma, Shaoyang Li, Wenwen Qi, Yi Li, Yaxiao Li, Mengdan Sun
Suaeda glauca is an annual herb in the family Amaranthaceae that produces dimorphic seeds (soft brown seeds and hard black seeds) on the same plant under natural conditions. Experiments were conducted to determine the salinity-alleviating effect of fire-related cues. Germination of both black and brown seeds was inhibited with an increase in salinity. Brown seeds had a higher germination percentage than black seeds in all conditions. Heat shock, smoke and their interaction had some effect in alleviating the salinity effect in brown seeds at 100-300 mM NaCl. This study provides valuable information to the understanding of the germination biology of Suaeda glauca.
Suaeda glauca是苋科一年生草本植物，在自然条件下在同一株植物上产生二态种子(软棕色种子和硬黑色种子)。实验确定了与火有关的线索减轻盐分的效果。随着盐度的增加，黑色和棕色种子的萌发都受到抑制。在所有条件下，棕色种子的发芽率都高于黑色种子。在100 ~ 300 mM NaCl条件下，热激、烟熏及其相互作用对缓解褐种子的盐效应有一定效果。本研究为了解紫田的萌发生物学提供了有价值的信息。
{"title":"Divergent germination responses to fire-related cues of Suaeda glauca dimorphic seeds under salinity stress","authors":"Dandan Zhao, Hongyuan Ma, Shaoyang Li, Wenwen Qi, Yi Li, Yaxiao Li, Mengdan Sun","doi":"10.15258/sst.2023.51.3.04","DOIUrl":"https://doi.org/10.15258/sst.2023.51.3.04","url":null,"abstract":"Suaeda glauca is an annual herb in the family Amaranthaceae that produces dimorphic seeds (soft brown seeds and hard black seeds) on the same plant under natural conditions. Experiments were conducted to determine the salinity-alleviating effect of fire-related cues. Germination of both black and brown seeds was inhibited with an increase in salinity. Brown seeds had a higher germination percentage than black seeds in all conditions. Heat shock, smoke and their interaction had some effect in alleviating the salinity effect in brown seeds at 100-300 mM NaCl. This study provides valuable information to the understanding of the germination biology of Suaeda glauca.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67092162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.3.10
Irfan Afzal
Seed priming is a pragmatic enhancement technology to improve seed performance used from ancient to modern times. Priming accelerates and synchronises the germination of seeds across a wider range of temperatures, giving rapid and uniform stand establishment of crop plants, particularly for low vigour and dormant seeds. Further investigation is necessary to extend the utilisation of low-cost and effective priming agents to a broader spectrum of species and to enhance availability. Seed priming is a cost-effective solution for small farmers as it reduces production costs and leads to uniform picking and harvesting, thus adding value in terms of quality. It is essential to scale up these approaches at both farmer and industry levels, particularly in developing countries. The benefits of priming are attributed to various putative molecular mechanisms such as epigenetic control of priming, germination, and dormancy-related attributes. However, in different species and cultivars, it remains elusive and there is a paucity of studies on the long-term benefits of re-drying after priming. This in-depth review summarises aspects of priming techniques in a modern context.
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Pub Date : 2023-01-01DOI: 10.15258/sst.2023.51.2.01
Valentina Vasile, Adina Tîrziu, Elena Nicolae, M. Ciucă, C. Cornea
Assessing genetic similarity and purity degree among wheat cultivars is important in breeding programmes and SSR markers have all the features that make them suitable for this purpose. The aim of this study was to assess the varietal purity and genetic diversity among wheat cultivars grown in Romania using 22 SSR markers and to choose the most informative markers. The 40 samples included in the study consisted of seeds from certified and non-certified wheat cultivars, and from other related species. To establish that varietal purity is maintained, seeds from 14 certified wheat cultivars were analysed from two harvesting campaigns (years 2019 and 2020) and seeds of four of them were also compared with the authors’ seeds. The most polymorphic SSR marker was Xwmc596 (seven alleles), followed by Xwmc603 and Xwmc474 (six); Xgwm71, Xbarc347 and Xbarc074 (five); Xgwm469, DuPw004, Xgwm155 and Xbarc184 (four); Xwmc418, Xbarc170, Xwmc533, DuPw167, DuPw115, Xgwm413 and Xgwm372 (three); and DuPw217, DuPw205, Xgwm003 and Xgwm095 (two). SSR marker Xgwm052 showed low polymorphism (one). No contamination of the varieties was observed in these harvesting campaigns since all SSRs markers showed high similarity in the certified wheat cultivars harvest analysis; genetic diversity between genotypes was also observed.
{"title":"SSR markers are useful tools in wheat varietal purity and genetic diversity assessment","authors":"Valentina Vasile, Adina Tîrziu, Elena Nicolae, M. Ciucă, C. Cornea","doi":"10.15258/sst.2023.51.2.01","DOIUrl":"https://doi.org/10.15258/sst.2023.51.2.01","url":null,"abstract":"Assessing genetic similarity and purity degree among wheat cultivars is important in breeding programmes and SSR markers have all the features that make them suitable for this purpose. The aim of this study was to assess the varietal purity and genetic diversity among wheat cultivars grown in Romania using 22 SSR markers and to choose the most informative markers. The 40 samples included in the study consisted of seeds from certified and non-certified wheat cultivars, and from other related species. To establish that varietal purity is maintained, seeds from 14 certified wheat cultivars were analysed from two harvesting campaigns (years 2019 and 2020) and seeds of four of them were also compared with the authors’ seeds. The most polymorphic SSR marker was Xwmc596 (seven alleles), followed by Xwmc603 and Xwmc474 (six); Xgwm71, Xbarc347 and Xbarc074 (five); Xgwm469, DuPw004, Xgwm155 and Xbarc184 (four); Xwmc418, Xbarc170, Xwmc533, DuPw167, DuPw115, Xgwm413 and Xgwm372 (three); and DuPw217, DuPw205, Xgwm003 and Xgwm095 (two). SSR marker Xgwm052 showed low polymorphism (one). No contamination of the varieties was observed in these harvesting campaigns since all SSRs markers showed high similarity in the certified wheat cultivars harvest analysis; genetic diversity between genotypes was also observed.","PeriodicalId":21662,"journal":{"name":"Seed Science and Technology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67091767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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