Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2525
H. O. Tellez, G. V. D. Bomfim, A. Carvalho, B. M. Azevedo
Abstract The expansion of residential areas has increased the demand for exotic and increasingly compact landscape plants. In this context, this work aimed to evaluate the effects of paclobutrazol (PBZ) and the timing of ethylene application on growth reduction and flowering anticipation in ornamental pineapples grown in pots. The randomized block design was used with factorial arrangement (2 x 5) and 4 replications and 4 plants per plot. The primary treatments are the presence and absence of PBZ. The secondary treatments were five times of floral induction with ethylene: 90; 120; 150; 180; 210 days after transplanting (DAT) the seedlings into the pots. It was evaluated the variables: height ratio between the heights of the pot and the plant; rosette diameter; leaves length ‘D’ and flowering index. At 255 DAT, although the plants did not respond to floral induction with ethylene, only those treated with PBZ were more compact and had different characteristics such as smaller size and a ratio below 1/3 of the height of the vase in relation to the plant that to favor its commercialization, in pot.
居住区的扩大增加了对外来和日益紧凑的景观植物的需求。在此背景下，本研究旨在评价多效唑(PBZ)和乙烯施用时间对盆栽观赏菠萝生长抑制和开花预期的影响。随机区组设计采用因子排列(2 × 5)， 4个重复，每个小区4株。主要的治疗是PBZ的存在和不存在。二次处理为乙烯诱导5倍:90;120;150;180;移栽后210天(DAT)幼苗入盆。评估变量为:花盆高度与植株高度之比;玫瑰直径;叶长' D '和开花指数。在255 DAT时，虽然植株对乙烯诱导没有反应，但只有PBZ处理的植株更紧凑，并且具有不同的特征，如较小的尺寸和低于花瓶高度的1/3的比例，有利于其在盆栽中商品化。
{"title":"Use of paclobutrazol and ethylene in the potted production of ornamental pineapple","authors":"H. O. Tellez, G. V. D. Bomfim, A. Carvalho, B. M. Azevedo","doi":"10.1590/2447-536x.v29i1.2525","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2525","url":null,"abstract":"Abstract The expansion of residential areas has increased the demand for exotic and increasingly compact landscape plants. In this context, this work aimed to evaluate the effects of paclobutrazol (PBZ) and the timing of ethylene application on growth reduction and flowering anticipation in ornamental pineapples grown in pots. The randomized block design was used with factorial arrangement (2 x 5) and 4 replications and 4 plants per plot. The primary treatments are the presence and absence of PBZ. The secondary treatments were five times of floral induction with ethylene: 90; 120; 150; 180; 210 days after transplanting (DAT) the seedlings into the pots. It was evaluated the variables: height ratio between the heights of the pot and the plant; rosette diameter; leaves length ‘D’ and flowering index. At 255 DAT, although the plants did not respond to floral induction with ethylene, only those treated with PBZ were more compact and had different characteristics such as smaller size and a ratio below 1/3 of the height of the vase in relation to the plant that to favor its commercialization, in pot.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45050039","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2502
A. Benedetto, C. Galmarini, J. Tognetti
Abstract Green and variegated Benjamin fig (Ficus benjamina) often suffer from root restriction when grown in pots. While exogenous cytokinin applications have proven effective in reversing this stress, the possibility that exogenous auxins, either alone or in combination with cytokinin, may also be helpful has received little attention. In this work, we analyse the response of green and variegated Ficus benjamina rooted cuttings growing in small pots to exogenous supply of auxin and cytokinin at different concentrations, either in single or combined applications. Our results show that both benzyl aminopurine (BAP) and indole acetic acid (IAA), at the highest concentration tested (100 mg L-1) increased leaf development and plant biomass accumulation in green and variegated Ficus genotypes. However, exogenous IAA and BAP appeared to elicit differential plant morpho-physiological responses. While BAP tended to enhance leaf appearance more than IAA did, the latter promoted leaf expansion in a steadier manner than BAP, thus resulting in plants with less, but larger, leaves than those treated with cytokinin. Despite these differences in plant architecture, regression analysis suggests that hormonal-induced growth promotion was solely attributable to enhanced carbon assimilation. Rather unexpectedly, IAA promoted net assimilation and photosynthesis rates at least as effectively as cytokinin. Possible mechanisms involved in growth and development promotion by exogenous application of both hormones are discussed. Auxin treatment may help overcome root restriction in Ficus as effectively as cytokinin in terms of growth promotion, although differences in plant architecture may arise as compared with plants sprayed with the latter hormone.
{"title":"Analysis of exogenous auxin and cytokinin action in overcoming root restriction in green and variegated Benjamin fig","authors":"A. Benedetto, C. Galmarini, J. Tognetti","doi":"10.1590/2447-536x.v29i1.2502","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2502","url":null,"abstract":"Abstract Green and variegated Benjamin fig (Ficus benjamina) often suffer from root restriction when grown in pots. While exogenous cytokinin applications have proven effective in reversing this stress, the possibility that exogenous auxins, either alone or in combination with cytokinin, may also be helpful has received little attention. In this work, we analyse the response of green and variegated Ficus benjamina rooted cuttings growing in small pots to exogenous supply of auxin and cytokinin at different concentrations, either in single or combined applications. Our results show that both benzyl aminopurine (BAP) and indole acetic acid (IAA), at the highest concentration tested (100 mg L-1) increased leaf development and plant biomass accumulation in green and variegated Ficus genotypes. However, exogenous IAA and BAP appeared to elicit differential plant morpho-physiological responses. While BAP tended to enhance leaf appearance more than IAA did, the latter promoted leaf expansion in a steadier manner than BAP, thus resulting in plants with less, but larger, leaves than those treated with cytokinin. Despite these differences in plant architecture, regression analysis suggests that hormonal-induced growth promotion was solely attributable to enhanced carbon assimilation. Rather unexpectedly, IAA promoted net assimilation and photosynthesis rates at least as effectively as cytokinin. Possible mechanisms involved in growth and development promotion by exogenous application of both hormones are discussed. Auxin treatment may help overcome root restriction in Ficus as effectively as cytokinin in terms of growth promotion, although differences in plant architecture may arise as compared with plants sprayed with the latter hormone.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48820916","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536X.v29i1.2575
L. Haryanto, Fandy Achmad Maulana, Sukrianto Sukrianto
Abstract The expansion of the COVID-19 pandemic from 2019 to 2021 has weakened the performance of critical industries in Indonesia. Aglaonema as one of the ornamental plants had a surge in demand as part of the farming industry until its height in 2020. Currently, the response to the demand for ornamental plants has declined considerably. This study discussed the revenue and income of Aglaonema farming during two periods, at height and the post of the COVID-19 pandemic, and analyzed the distribution of inputs data as information related to the allocation of production. The respondents comprised 32 active farmers from the Aglaonema community (ASA) in Depok City, who produced 10 varieties of premium Aglaonema, namely Super Pink, Suksom Jaipong, Khanza, Lotus Delight, Audrey, Tiara, Widuri, Adelia, Bidadari, and Pride of Sumatra. The data was collected from June to November 2022 using the recall method to tabulate data in 2020 (the year of the height of COVID-19 pandemic) and 2022 (the year of the post COVID-19 pandemic). The R/C ratio was used as a profit indicator by considering the implicit and explicit costs. The findings revealed that Aglaonema farming in Depok City was highly profitable at the height of the COVID-19 pandemic, evidenced by an R/C ratio of 7.50. The R/C ratio has changed in 2022 value to 1.79, indicating a decline in farming profitability. Suppose the farmers pay the implicit costs in the current situation, the farming becomes less profitable as shown by the return value which is just slightly above the break-even point.
摘要2019年至2021年新冠肺炎疫情的扩大削弱了印度尼西亚关键行业的表现。Aglaonema作为一种观赏植物，作为农业的一部分，需求激增，直到2020年达到顶峰。目前，对观赏植物需求的反应已大幅下降。本研究讨论了阿格劳内马农业在新冠肺炎大流行高峰和后两个时期的收入和收入，并分析了投入数据的分布，作为与生产分配相关的信息。受访者包括来自德波克市阿格劳内马社区（ASA）的32名活跃农民，他们生产了10种优质阿格劳内玛，即Super Pink、Suksom Jaipong、Khanza、Lotus Delight、Audrey、Tiara、Widuri、Adelia、Bidadari和Pride of Sumatra。数据收集于2022年6月至11月，使用召回方法将2020年（新冠肺炎疫情最严重的年份）和2022年（新冠肺炎疫情后的年份）的数据制成表格。通过考虑隐性成本和显性成本，将R/C比率用作利润指标。调查结果显示，在新冠肺炎疫情最严重的时候，德波克市的阿格劳内马农场利润丰厚，R/C比率为7.50。2022年的R/C比率变化为1.79，表明农业盈利能力下降。假设农民在当前情况下支付隐性成本，农业的利润就会降低，回报值略高于盈亏平衡点。
{"title":"The impact of Covid-19 pandemic on Aglaonema farming income: a comparison between the height and the post trend","authors":"L. Haryanto, Fandy Achmad Maulana, Sukrianto Sukrianto","doi":"10.1590/2447-536X.v29i1.2575","DOIUrl":"https://doi.org/10.1590/2447-536X.v29i1.2575","url":null,"abstract":"Abstract The expansion of the COVID-19 pandemic from 2019 to 2021 has weakened the performance of critical industries in Indonesia. Aglaonema as one of the ornamental plants had a surge in demand as part of the farming industry until its height in 2020. Currently, the response to the demand for ornamental plants has declined considerably. This study discussed the revenue and income of Aglaonema farming during two periods, at height and the post of the COVID-19 pandemic, and analyzed the distribution of inputs data as information related to the allocation of production. The respondents comprised 32 active farmers from the Aglaonema community (ASA) in Depok City, who produced 10 varieties of premium Aglaonema, namely Super Pink, Suksom Jaipong, Khanza, Lotus Delight, Audrey, Tiara, Widuri, Adelia, Bidadari, and Pride of Sumatra. The data was collected from June to November 2022 using the recall method to tabulate data in 2020 (the year of the height of COVID-19 pandemic) and 2022 (the year of the post COVID-19 pandemic). The R/C ratio was used as a profit indicator by considering the implicit and explicit costs. The findings revealed that Aglaonema farming in Depok City was highly profitable at the height of the COVID-19 pandemic, evidenced by an R/C ratio of 7.50. The R/C ratio has changed in 2022 value to 1.79, indicating a decline in farming profitability. Suppose the farmers pay the implicit costs in the current situation, the farming becomes less profitable as shown by the return value which is just slightly above the break-even point.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45460761","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2540
D. Soliman, I. El-Sayed
Abstract Carnation (Dianthus caryophyllus ‘Servantes’) is a popular and economically cut flower widely used in the florist industry. However, post-harvest senescence occurs in a few days and limits the cut carnation flowers’ commercialization. Therefore, this research was performed to investigate the impact of essential oils such as tea tree oil (TTO), pumpkin seed oil (PSO), Moringa seed essential oils (MEO), and Eucalyptus oils (EEO), as eco-friendly preservative solutions to enhance the quality and longevity of carnation flowers. Carnation cut flowers were submitted to different concentrations (250 and 500 mg L-1) of each essential oil used in the vase solution and the experiments were carried out as a completely randomized design in three replicates. The findings revealed that the longest vase life and the maximum total water solution uptake in cut carnation were achieved when treated with either TTO or PSO oil at 500 mg L-1 in solution preservative as compared to the control (distilled water). While the highest relative fresh weight was observed at 500 mg L-1 PSO, the highest chlorophyll a, b, total carotenoids, total sugar, total phenolic content in leaves, anthocyanin content, and enzyme activity in petals at 500 mg L-1 TTO and PSO. Additionally, all treatments of selected oils have positively declined the bacteria activity compared to control. Also, the lowest bacteria growth on third day with 500 mg L-1 TTO and PSO. However, observing a prim state of xylem vessels with TTO 500 mg L-1and PSO 500 mg L-1, comparable with distilled water, the application of essential oil in this study as a natural preservative in preservative solution as an alternative to chemicals could be of environmental value and great economic.
{"title":"Study postharvest characteristics, chemical composition and antimicrobial activity of Dianthus caryophyllus L., cut flowers using some essential oils","authors":"D. Soliman, I. El-Sayed","doi":"10.1590/2447-536x.v29i1.2540","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2540","url":null,"abstract":"Abstract Carnation (Dianthus caryophyllus ‘Servantes’) is a popular and economically cut flower widely used in the florist industry. However, post-harvest senescence occurs in a few days and limits the cut carnation flowers’ commercialization. Therefore, this research was performed to investigate the impact of essential oils such as tea tree oil (TTO), pumpkin seed oil (PSO), Moringa seed essential oils (MEO), and Eucalyptus oils (EEO), as eco-friendly preservative solutions to enhance the quality and longevity of carnation flowers. Carnation cut flowers were submitted to different concentrations (250 and 500 mg L-1) of each essential oil used in the vase solution and the experiments were carried out as a completely randomized design in three replicates. The findings revealed that the longest vase life and the maximum total water solution uptake in cut carnation were achieved when treated with either TTO or PSO oil at 500 mg L-1 in solution preservative as compared to the control (distilled water). While the highest relative fresh weight was observed at 500 mg L-1 PSO, the highest chlorophyll a, b, total carotenoids, total sugar, total phenolic content in leaves, anthocyanin content, and enzyme activity in petals at 500 mg L-1 TTO and PSO. Additionally, all treatments of selected oils have positively declined the bacteria activity compared to control. Also, the lowest bacteria growth on third day with 500 mg L-1 TTO and PSO. However, observing a prim state of xylem vessels with TTO 500 mg L-1and PSO 500 mg L-1, comparable with distilled water, the application of essential oil in this study as a natural preservative in preservative solution as an alternative to chemicals could be of environmental value and great economic.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47965820","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2528
M. Taghizadeh, F. Sajadi
Abstract Seed dormancy is a mechanism of long survival that is ecologically important for seed propagation and dispersal and the expansion of plant populations. The impermeability of the seed coat in the Fabaceae family is due to a layer of sclerotic cells. Two experiments were conducted to investigate the effect of different seed treatment on germination parameters and seedling growth in Cercis siliquastrum and Spartium junceum. Experimental treatments comprised of chemical and thermal scarification treatment consisting of boiling water (2, 5, 10 min), H2SO4 (30, 60 min) and GA (0, 500 and 1,000 mg L−1) in C. siliquastrum and boiling water (2, 5, 10 min), H2SO4 (2, 5 min) in S. junceum. The results presented here indicate that chemical scarification by soaking in sulfuric acid for 30 min and 2 min in C. siliquastrum and S. junceum, respectively were the most efficient methods to breaking the seed dormancy. The application of these methods promoted the highest values of indices seedlings. In the light of the found results, it revealed that C. siliquastrum and S. junceum seeds are affected by a coat dormancy, which can be removed by a chemical-thermal scarification with sulfuric acid and boiling water. The data obtained contribute to a better comprehension of propagation and establishment of these shrubs ornamental by seedling.
{"title":"Effects of dormancy breaking methods on germination of Cercis siliquastrum and Spartium junceum and seedling growth","authors":"M. Taghizadeh, F. Sajadi","doi":"10.1590/2447-536x.v29i1.2528","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2528","url":null,"abstract":"Abstract Seed dormancy is a mechanism of long survival that is ecologically important for seed propagation and dispersal and the expansion of plant populations. The impermeability of the seed coat in the Fabaceae family is due to a layer of sclerotic cells. Two experiments were conducted to investigate the effect of different seed treatment on germination parameters and seedling growth in Cercis siliquastrum and Spartium junceum. Experimental treatments comprised of chemical and thermal scarification treatment consisting of boiling water (2, 5, 10 min), H2SO4 (30, 60 min) and GA (0, 500 and 1,000 mg L−1) in C. siliquastrum and boiling water (2, 5, 10 min), H2SO4 (2, 5 min) in S. junceum. The results presented here indicate that chemical scarification by soaking in sulfuric acid for 30 min and 2 min in C. siliquastrum and S. junceum, respectively were the most efficient methods to breaking the seed dormancy. The application of these methods promoted the highest values of indices seedlings. In the light of the found results, it revealed that C. siliquastrum and S. junceum seeds are affected by a coat dormancy, which can be removed by a chemical-thermal scarification with sulfuric acid and boiling water. The data obtained contribute to a better comprehension of propagation and establishment of these shrubs ornamental by seedling.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48928297","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2514
H. Ashour, Eman Zaki Othman Mohamed, A. B. El-Attar
Abstract The present experiment was conducted to determine the effect chemical fertilization rates and foliar application of plant growth regulators PGRs (Kinetin or Napthaleneacetic Acid (NAA) and their interactions on growth, flowering, chemical composition of Ervatamia coronaria plants. The plants were fertilized monthly with NPK at the rate of 2, 4 and 6 g pot-1, in addition to the control plants. Plants received the fertilization treatments were sprayed monthly with either Kinetin or NAA at 50, 100 ppm for each one, while the control plants sprayed with tap water. As general, the results indicated that within each level of fertilizer treatments, treating plants with different concentrations of PGRs (Kinetin or NAA) resulted in significant increase in tested vegetative growth (in terms of plant height, number of branches plant-1, leaf area, number of leaves plant-1, stem diameter, root length, fresh and dry weights of leaves, stems and roots), flowering parameters (Viz number of flowers/ plant, fresh and dry weights of flowers), chlorophylls content, total carbohydrates, N, P , K%, total indoles and total phenols, gibberellins, auxins and cytokinins compared to control, with superiority of NAA particularly the highest concentrations (100 ppm) . Under the same level of PGRs raising the fertilization rate caused a gradual and significant increase in all tested parameters compared to control. Based on the results, it can be recommended that for the highest quality growth and flowering parameters of Ervatamia coronaria, the plants could be sprayed with NAA at 100 ppm combined with 6 g pot-1 NPK.
摘要本试验测定了化学施肥量和叶面施用植物生长调节剂PGRs（Kinetin或萘乙酸（NAA））及其相互作用对Ervatamia coronaria植物生长、开花和化学成分的影响。除对照植物外，每月用NPK以2、4和6 g pot-1的速率对植物进行施肥。接受施肥处理的植物每月喷洒50，100ppm的Kinetin或NAA，而对照植物则喷洒自来水。总体而言，结果表明，在每一水平的肥料处理中，用不同浓度的PGRs（Kinetin或NAA）处理植物会显著增加测试的营养生长（就株高、分枝数、叶面积、叶片数、茎直径、根长度、叶片、茎和根的鲜重和干重而言），与对照相比，开花参数（花/株的Viz数、花的鲜重和干重）、叶绿素含量、总碳水化合物、N、P、K%、总吲哚和总酚、赤霉素、生长素和细胞分裂素，其中NAA的优势尤其是最高浓度（100ppm）。在相同水平的PGRs下，与对照相比，提高施肥率导致所有测试参数逐渐显著增加。基于这些结果，可以建议，为了获得最高质量的新冠Ervatamia生长和开花参数，可以用100ppm的NAA和6g pot-1 NPK对植物进行喷雾。
{"title":"Response of Ervatamia coronaria to plant growth regulators and chemical fertilization","authors":"H. Ashour, Eman Zaki Othman Mohamed, A. B. El-Attar","doi":"10.1590/2447-536x.v29i1.2514","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2514","url":null,"abstract":"Abstract The present experiment was conducted to determine the effect chemical fertilization rates and foliar application of plant growth regulators PGRs (Kinetin or Napthaleneacetic Acid (NAA) and their interactions on growth, flowering, chemical composition of Ervatamia coronaria plants. The plants were fertilized monthly with NPK at the rate of 2, 4 and 6 g pot-1, in addition to the control plants. Plants received the fertilization treatments were sprayed monthly with either Kinetin or NAA at 50, 100 ppm for each one, while the control plants sprayed with tap water. As general, the results indicated that within each level of fertilizer treatments, treating plants with different concentrations of PGRs (Kinetin or NAA) resulted in significant increase in tested vegetative growth (in terms of plant height, number of branches plant-1, leaf area, number of leaves plant-1, stem diameter, root length, fresh and dry weights of leaves, stems and roots), flowering parameters (Viz number of flowers/ plant, fresh and dry weights of flowers), chlorophylls content, total carbohydrates, N, P , K%, total indoles and total phenols, gibberellins, auxins and cytokinins compared to control, with superiority of NAA particularly the highest concentrations (100 ppm) . Under the same level of PGRs raising the fertilization rate caused a gradual and significant increase in all tested parameters compared to control. Based on the results, it can be recommended that for the highest quality growth and flowering parameters of Ervatamia coronaria, the plants could be sprayed with NAA at 100 ppm combined with 6 g pot-1 NPK.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46540666","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2527
C. L. Pinheiro, Jadson Bonini Zampirollo, Marcel Merlo Mendes, Vinícius Fonseca dos Santos, J. Martins, Diolina Moura Silva, M. Tognella, D. Cassol, A. R. Falqueto
Abstract In order to establish a link between the evolutionary history and the photochemical attributes, measurements of chlorophyll (Chl) a fluorescence were made in Cattleya warneri, C. shofieldiana and C. harrisoniana exposed to high irradiance for 5, 35, and 120 min (hereafter referred to as treatments T5, T35, and T120, respectively). The following questions are addressed: (1) Is the increased energy dissipation enough to counterbalance the excess energy that drives photosynthesis at different times of high irradiance exposure? (2) Is there an influence of the incidence and duration of light radiation on Cattleya species in full sunlight, compared to Cattleya species submitted to low irradiance? Higher relative variable fluorescence at the J-step (Vj) values followed by the lower quantum yield of electron transport (ψEo) indicate the accumulation of reduced Quinone A (QA) proportionally of sunflecks exposure time in C. warneri. The higher performance index (PIABS) and plasticity index values in C. schofieldiana indicate higher efficiency in modulating the photosynthetic apparatus under sunflecks. C. harrisoniana shows the lowest plasticity index, suppression of maximum fluorescence (Fm), and no recovery of PIABS after sunflecks. This study evidences the importance of physiological plasticity in the current geographic distribution of Cattleya in response to light pulses in species derived from fragmented habitats and the maintenance of shade to species of more primitive clades.
{"title":"Exposition of three Cattleya species (Orchidaceae) to full sunlight: effect on their physiological plasticity and response to changes in light conditions","authors":"C. L. Pinheiro, Jadson Bonini Zampirollo, Marcel Merlo Mendes, Vinícius Fonseca dos Santos, J. Martins, Diolina Moura Silva, M. Tognella, D. Cassol, A. R. Falqueto","doi":"10.1590/2447-536x.v29i1.2527","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2527","url":null,"abstract":"Abstract In order to establish a link between the evolutionary history and the photochemical attributes, measurements of chlorophyll (Chl) a fluorescence were made in Cattleya warneri, C. shofieldiana and C. harrisoniana exposed to high irradiance for 5, 35, and 120 min (hereafter referred to as treatments T5, T35, and T120, respectively). The following questions are addressed: (1) Is the increased energy dissipation enough to counterbalance the excess energy that drives photosynthesis at different times of high irradiance exposure? (2) Is there an influence of the incidence and duration of light radiation on Cattleya species in full sunlight, compared to Cattleya species submitted to low irradiance? Higher relative variable fluorescence at the J-step (Vj) values followed by the lower quantum yield of electron transport (ψEo) indicate the accumulation of reduced Quinone A (QA) proportionally of sunflecks exposure time in C. warneri. The higher performance index (PIABS) and plasticity index values in C. schofieldiana indicate higher efficiency in modulating the photosynthetic apparatus under sunflecks. C. harrisoniana shows the lowest plasticity index, suppression of maximum fluorescence (Fm), and no recovery of PIABS after sunflecks. This study evidences the importance of physiological plasticity in the current geographic distribution of Cattleya in response to light pulses in species derived from fragmented habitats and the maintenance of shade to species of more primitive clades.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41259521","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v.29i1.2590
P. D. O. Paiva
{"title":"Climate change as a challenge for Floriculture","authors":"P. D. O. Paiva","doi":"10.1590/2447-536x.v.29i1.2590","DOIUrl":"https://doi.org/10.1590/2447-536x.v.29i1.2590","url":null,"abstract":"","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48825625","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2507
Andrey Viktorovich Gusev, N. Mamaeva, G. A. Savel’eva, Yu.A. Khokhlacheva
Abstract The purpose of this study is a scientifically based selection of representatives of the genera Paeonia L., Hosta L. and Iris L., promising for use in urban landscaping. The choice of research objects is determined by three criteria. These are: 1) representatives of the genera Paeonia, Hosta and Iris - large generic complexes with a large number of cultivars; 2) their cultivars are characterized by a wide morphological diversity; 3) in Russia, these cultures have long been actively used in landscape design. Their own set of characteristics has been studied for them. These signs are important for the selection of plants used in the greened objects of the city. The genus Paeonia is represented by a sample of 19 cultivars of P. lactiflora Pall. with a Japanese flower shape. The variability of three quantitative characteristics was studied - the length of the stem, its thickness at the base and the diameter of the flower. The genus Hosta is represented by a sample of 23 names. The variability was studied according to four characteristics - the length and width of the leaf blade, the leaf area, and the length of the petiole. The genus Iris is represented by a selection of 10 names. The variability of six characteristics was studied - the height of the plant, the number of flowers on the peduncle, the length of the flower and the width of the flower, the length and width of the leaf blade. Statistical processing of the obtained data was carried out using the program “Statistica Base”. Classical methods of data processing are used. The development of models of flower beds is carried out using the AutoCAD program. From the total composition of the sample, promising varieties and forms were selected for each culture under study. In representatives of the genus Paeonia - this is the cultivar ‘Bu-Te’. For the genus Hosta, these are the cultivars ‘Frances Williams’ and ‘Liberty’. In the genus Iris, it is a form of natural origin I. sibirica f. albiflora. Based on the data obtained, 3 mixborders were designed with the participation of these cultivars and one form of natural origin.
{"title":"Study of quantitative characteristics of three cultures (peonies, hostas, irises) for their use in urban landscaping","authors":"Andrey Viktorovich Gusev, N. Mamaeva, G. A. Savel’eva, Yu.A. Khokhlacheva","doi":"10.1590/2447-536x.v29i1.2507","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2507","url":null,"abstract":"Abstract The purpose of this study is a scientifically based selection of representatives of the genera Paeonia L., Hosta L. and Iris L., promising for use in urban landscaping. The choice of research objects is determined by three criteria. These are: 1) representatives of the genera Paeonia, Hosta and Iris - large generic complexes with a large number of cultivars; 2) their cultivars are characterized by a wide morphological diversity; 3) in Russia, these cultures have long been actively used in landscape design. Their own set of characteristics has been studied for them. These signs are important for the selection of plants used in the greened objects of the city. The genus Paeonia is represented by a sample of 19 cultivars of P. lactiflora Pall. with a Japanese flower shape. The variability of three quantitative characteristics was studied - the length of the stem, its thickness at the base and the diameter of the flower. The genus Hosta is represented by a sample of 23 names. The variability was studied according to four characteristics - the length and width of the leaf blade, the leaf area, and the length of the petiole. The genus Iris is represented by a selection of 10 names. The variability of six characteristics was studied - the height of the plant, the number of flowers on the peduncle, the length of the flower and the width of the flower, the length and width of the leaf blade. Statistical processing of the obtained data was carried out using the program “Statistica Base”. Classical methods of data processing are used. The development of models of flower beds is carried out using the AutoCAD program. From the total composition of the sample, promising varieties and forms were selected for each culture under study. In representatives of the genus Paeonia - this is the cultivar ‘Bu-Te’. For the genus Hosta, these are the cultivars ‘Frances Williams’ and ‘Liberty’. In the genus Iris, it is a form of natural origin I. sibirica f. albiflora. Based on the data obtained, 3 mixborders were designed with the participation of these cultivars and one form of natural origin.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42016406","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}
Pub Date : 2023-03-01DOI: 10.1590/2447-536x.v29i1.2535
A. Kurniawati, Krisantini Krisantini, Nadia Putri Firdausa, Ketty Suketi
Abstract Basil (Ocimum basilicum L., Lamiaceae) is an herbal species cultivated primarily for culinary and aromatherapy. Basil plant height could reach more than 60 cm, and the plants tend to elongate, particularly in low-light environments. Our current study examined the potential uses of plant growth retardant paclobutrazol to control sweet basil height and improve potted basil’s ornamental quality. The treatment tested was paclobutrazol concentration at 0, 5, 10, and 20 ppm, applied as 100 mL media drenching per pot five weeks after planting. The control plants were water-drenched using the same volume at the same time. Basil treated with PBZ at 10 ppm or 20 ppm had significantly shorter, smaller shoot canopy diameter, node and leaf number than the control, but had a similar number of branches to the control. Basil treated with PBZ at 10 ppm or 20 ppm showed a more compact and bushy pot plants with the height to pot ratio of 1.5. Higher leaf chlorophyll, indicated by a higher index value, was recorded only with the PBZ concentration of 20 ppm compared to the control and the other PBZ concentrations. Basil growth responses to PBZ at 10 ppm were not significantly different from those treated with PBZ at 20 ppm, therefore the use of PBZ at a lower concentration (10 ppm) is preferable. Further studies should examine whether repeated PBZ applications at lower concentration is more effective in producing shorter and more compact pot plants.
{"title":"Effect of growth regulator paclobutrazol on size fitting of basil as a potted plant","authors":"A. Kurniawati, Krisantini Krisantini, Nadia Putri Firdausa, Ketty Suketi","doi":"10.1590/2447-536x.v29i1.2535","DOIUrl":"https://doi.org/10.1590/2447-536x.v29i1.2535","url":null,"abstract":"Abstract Basil (Ocimum basilicum L., Lamiaceae) is an herbal species cultivated primarily for culinary and aromatherapy. Basil plant height could reach more than 60 cm, and the plants tend to elongate, particularly in low-light environments. Our current study examined the potential uses of plant growth retardant paclobutrazol to control sweet basil height and improve potted basil’s ornamental quality. The treatment tested was paclobutrazol concentration at 0, 5, 10, and 20 ppm, applied as 100 mL media drenching per pot five weeks after planting. The control plants were water-drenched using the same volume at the same time. Basil treated with PBZ at 10 ppm or 20 ppm had significantly shorter, smaller shoot canopy diameter, node and leaf number than the control, but had a similar number of branches to the control. Basil treated with PBZ at 10 ppm or 20 ppm showed a more compact and bushy pot plants with the height to pot ratio of 1.5. Higher leaf chlorophyll, indicated by a higher index value, was recorded only with the PBZ concentration of 20 ppm compared to the control and the other PBZ concentrations. Basil growth responses to PBZ at 10 ppm were not significantly different from those treated with PBZ at 20 ppm, therefore the use of PBZ at a lower concentration (10 ppm) is preferable. Further studies should examine whether repeated PBZ applications at lower concentration is more effective in producing shorter and more compact pot plants.","PeriodicalId":19699,"journal":{"name":"Ornamental Horticulture","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47029055","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}
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