LEGUME RESEARCH - AN INTERNATIONAL JOURNAL最新文献

{"title":"Carryover of Callosobruchus maculatus (Fab.) in Pigeon Pea Seeds from Field to Storage and its Management by Smearing Oil on Seeds","authors":"Dhruv Singh, D. V. Singh, Bhupendra Singh, Reetesh Pratap Singh, Chandra Kant","doi":"10.18805/lr-5283","DOIUrl":"https://doi.org/10.18805/lr-5283","url":null,"abstract":"Background: Pigeonpea, Cajanus cajan (L.) is a vital pulse crop in South Asia, with India accounting for 90% of it’s global production. Its protein content (21-25%) is essential for nutrition and plays significant role in improving food security and nutrition in regions with limited resources. The insect pest attacks in Pigeonpea cause significant amount of grain loss in field and storage, the research was carried out to investigate the carryover of pest from field to storehouses and to study the efficacy of oils on C. maculatus management in which literature available is scarce. Methods: This study was carried out at Sardar Vallabhbhai Patel University of Agriculture and Technology Meerut, U.P., India during the year 2020-2022. Pigeonpea seeds were collected from research farm threshing floor of ICAR-IIFSR, Meerut. Infestations of pulse beetle carried from field to storage was studied on basis of mean no. of eggs laid and mean seed damage caused by beetle. To study efficacy of oils, the seeds were subjected to linseed, mustard, soybean, rice bran, safflower, castor, mahua and neem oil each at concentrations of 0.20, 0.50 and 1.00 ml per 100 g of seeds and five pair of beetles of same age were released into each container and removed after 5 days to study the damage incurred. Result: In the carryover study, maximum oviposition (16.88 eggs) was recorded on freshly harvested seeds that were kept open in storehouse for infestations which witnessed field as well as storage egg laying. Oils application on seeds showed 1ml oil per 100 g seed as most suitable dosage and neem oil, castor, mahua as most successful oil providing beetle control in terms of oviposition, damage and adult survival. Residual action of oil on seed surface after 3 months revealed different oil treatments showed significant reduction in the number of eggs laid, adult emergence and seed damage due to C. maculatus in pigeonpea seeds in comparison to control. Mean reductions in the number of eggs, adult emergence and seed damage were relatively higher in all the oil treatments.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"227 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140233581","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}

{"title":"Genotype x Environment Interaction and Stability Analysis for Seed Yield in Desi Chickpea (Cicer arietinum L.) under Irrigated Condition","authors":"Laxuman,, B. P. Kumar, B.S. Reddy, Sidramappa, P. Kuchanur, J.M. Nidgundi, L.N. Yogeesh","doi":"10.18805/lr-5020","DOIUrl":"https://doi.org/10.18805/lr-5020","url":null,"abstract":"Background: Chickpea is mainly grown on marginal lands and encounter the problem of erratic rainfall that causes lack of water availability especially at terminal growth stages. Exploration of yield stability and defining the adaptation domains of advance genotypes in different ecosystem is highly imperative for crop genetic improvement programs. Development of variety with high yield potential and stable under irrigated condition is one of the major objectives of chickpea improvement programme, which can be achieved by improving selection efficiency with estimating stability parameters. Ten chickpea genotypes as advance breeding lines and popular varieties were evaluated to assess seed yield stability under irrigated condition during rabi 2021-22. Methods: Experiments were conducted in randomized block design with three replications at five different locations of Karnataka i.e. Bidar, Kalaburagi, Bheemarayanagudi, Raichur and Hagari. The interaction analysis (AMMI ANOVA) indicates large variations for seed yield due to highly significant (p less than 0.01) environment (65.42%) and significant (p less than 0.05) genotype (10.03%), thus the genotypes were diverse with large sum of squares for seed yield and environment. Result: The differential response of chickpea genotypes for seed yield across the environments was observed. IPCA1 and IPCA2 together captured 12.97 per cent of the interaction mean squares RG-2016-134 and KCD-2019-05 showed higher mean yields and adaptable to favourable environments. Based on AMMI bi-plot analysis, genotypes (KCD-2019-05 and Super Annigeri-1) were stable and (DC-17-1111 and RG-2016-134) were unstable. Similarly, best performer genotypes and three mega environments were noticed through the analysis. Three environments i.e., (Bidar, Kalaburagi and Raichur) were found with most selective for seed yield estimation. The genotypes (RGV-203, KCD-2019-02 and Super Annigeri-1) were the best among all the ten tested genotypes in terms of seed yield stability.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140234397","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}

{"title":"Ascertaining Lethal Dose 50 (LD50) and Simultaneous Effect of Ethyl Methane Sulphonate (EMS) and Sodium Azide (SA) On Seedling Characters in Mungbean Genotypes ‘Pusa 1031’ and ‘Pusa 1431’","authors":"S.M.D. Basid Ali, N. Konjengbam, Farzana Ahmad, Shelly Sanasam, Radheshyam Kumawat","doi":"10.18805/lr-5255","DOIUrl":"https://doi.org/10.18805/lr-5255","url":null,"abstract":"Background: Finding effective dose is the most crucial step before commencing any mutagen treatment. The present study determined the lethal median dose in two mungbean genotypes, ‘Pusa 1031’ and ‘Pusa 1431’, using two different chemical mutagens namely Ethyl Methane Sulphonate and Sodium Azide. Methods: A pair of mungbean genotypes “Pusa 1031” and “Pusa 1431” were subjected to varying concentrations of two chemical mutagens i.e., Ethyl Methane Sulphonate (EMS) (10-100 mm with a ten mm different) and Sodium Azide (SA) (0.01 mm - 0.05 mm) followed by germinating the seeds in trays containing soil rite. Result: EMS treatment in two genotypes displayed LD50 values as 58.81 mM and 45.04 mM for the genotypes ‘Pusa 1031' and ‘Pusa 1431’, respectively. Lethal dose 50 was determined as 0.047 mM for both genotypes when treated with sodium azide. Seedling characters exhibited a linear response with dose augmentation for both the chemical mutagens, despite displaying similar LD50 values both genotypes exhibited remarkable differences in seedling parameters when treated with sodium azide.","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"28 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140235990","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}

{"title":"Development of an Efficient and Reproducible Embryonic Axis-targeted Tissue Culture-based Transformation Protocol for Pigeonpea (Cajanus cajan)","authors":"J. Tilgam, S. Bhattacharjee, K. Paul, S. Jaiswal, M. Saakre, P. Kumari, J. Vijayan, R. Sreevathsa, D. Pattanayak","doi":"10.18805/lr-5249","DOIUrl":"https://doi.org/10.18805/lr-5249","url":null,"abstract":"Background: Tissue culture-based transformation approach poses significant challenges for genetic modification of recalcitrant pigeonpea due to poor regeneration efficiency. In this study, we present a comprehensive high-frequency regeneration and transformation protocol using embryonic axesas explants. Methods: Optimization of transformation parameters and culture conditions for different stages of adventitious shoot regeneration, including shoot induction, elongation and rooting, significantly enhanced transformation efficiency. Agrobacterium-mediated transformation was carried out using embryonic axes explants with pCAMBIA 2301 vector. Culturing of explants on MS basal media supplemented with BAP 2.5 in Preculture, BAP 2.5 in Selection Medium I, IAA 0.5, GA 0.5 and Zeatin 1 in Selection Medium II resulted in formation of numerous multiple shoots from primordia-forming calli at axillary bud regions. Result: Shooting efficiency was 82% and 77%, for cultivars, Pusa 992 and Asha respectively. Rooting efficiency was nearly 100% for both when cultured on half-strength MScontaining 15 g/l sucrose and 0.5 mg/l IAA. Regenerated plants exhibited a high level ofsurvival of 90% upon transplantation into pots. Successful gene integration and expression were confirmed through GUS histochemical and molecular analyses, with approximately 57% and 65% transformation efficiencies for cultivars Pusa 992 and Asha, respectively. This study presents a robust and reproducible tissue culture-based transformation system for pigeonpea, applicable across diverse genotypes, offering new possibilities for genetic improvement in this crucial legume crop.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"2 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140242821","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}

{"title":"Relative Discriminatory Ability of AMMI and GGE Biplot in Analysis of GxE Interaction for Yield and Seed Index in Chickpea (Cicer arietinum L.)","authors":"Ravi R. Saxena, V.K. Tripathi, Ritu R. Saxena, Hemant Sahu, Aanchal Sahu, Abhishek Singh Rajput","doi":"10.18805/lr-5219","DOIUrl":"https://doi.org/10.18805/lr-5219","url":null,"abstract":"Background: The research focused on investigating the impact of genotype-environment interaction on the yield stability and performance of eight chickpea genotypes across three different locations (Bhatapara, Kawardha and Raipur). Method: The study employed a randomized block design with two replications in each environment in Rabi season during 2021-22. Analysis of variance (ANOVA) revealed significant variations between environments and genotype-environment interaction (G x E) based on AMMI and GGE biplot. Results: To visualize the genotype-environment relationship, a two-dimensional GGE biplot was created using the first two principal components, which accounted for 87.8% and 11.5% of the interaction’s variation. The GGE biplot indicated that genotype g4 (ICCX 161100-B-B-B-B) in environment e2 (Kawardha) and g8 (JG-24) in environment e1 (Bhatapara) exhibited high yield. Genotype g3 (ICCV 201112) in environment e3 (Raipur) also showed high yield, while genotype g5 (JG 2020-10) demonstrated stability across all three environments. Furthermore, the AMMI analysis identified genotype g2 (ICCV 201103) as a superior performer in terms of yield stability across environments. By employing the GGE biplot and AMMI analysis, the study categorized the genotypes into three groups, facilitating simplified visual evaluations. The GGE biplot highlighted that genotype g8 (JG-24) exhibited better seed index in environment e3 (Raipur), while genotype g1 (ICCV 201210) performed well in environment e1 (Bhatapara). Genotype g2 (ICCV 201103) demonstrated a good seed index in all three environments. The AMMI analysis indicated that genotype g3 (ICCV 201112) had a slightly lower seed index but maintained stability across all environments. Overall, the findings of this investigation, as represented by the GGE and AMMI biplots, visually illustrated the relationship between genotypes and environments. The identified genotypes hold potential for improving yield production and further research and breeding efforts can be based on these findings.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"12 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140244523","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}

{"title":"Effect of Sowing Dates and Seed Priming on Agrometeorological Indices and Soil Moisture Regimes of Chickpea in North Central Plateau Zone NCPZ of Odisha","authors":"M. Ray, P. Roul, Promil Kapoor, Shikha Yadav, Supriya, Nishu Kumari, Pradeep Mishra","doi":"10.18805/lr-5223","DOIUrl":"https://doi.org/10.18805/lr-5223","url":null,"abstract":"Background: field experiment entitled “Effect of sowing dates and seed priming on agrometeorological indices and soil moisture regimes of Chickpea in NCPZ of Odisha” was conducted at RRTTS, Keonjhar, Odisha, during the Rabi season for two consecutive years i.e., 2021-22 and 2022-23. Method: The field experiment was laid out in factorial RBD design with three replications and two factors. There were 3 dates of sowing in Factor A (D1-25 November, D2-5 December, D3- 15 December) and 5 moisture conservation practices in Factor B (M1- Control, M2- Seed priming with water for 8 hours, M3- Osmopriming (Seed priming with CaCl2 solution @0.5% for 8 hours), M4- Straw mulch@ 5t/ha and M5- Straw mulch@ 5t/ha +Seed priming with CaCl2 solution @0.5% for 8 hours). Seed priming controls the hydration of seeds that helps in the pre germinative metabolic activity of the seeds. So even if the soil has less moisture that will not affect the uniform and proper germination of the seeds. All together there were 15 treatment combinations. The test crop variety taken was JAKI-9218. Among the three dates of sowing, D2 (5th Dec) sowing recorded the tallest plants (41.47 cm). but were recorded in D1 (25 Nov) sowing. Early sowing on 25th November recorded the maximum number of primary and secondary branches and required a greater number of days to 50% flowering (41.8 days) and days to physiological maturity (101.1 days). Results: Among the moisture conservation practices, M5 (Straw mulch@ 5 t/ha+Seed priming with CaCl2 solution @ 0.5% for 8 hours) recorded the tallest plants, maximum number of primary and secondary branches, maximum number of days taken to 50% flowering (40.7 days) and days taken to physiological maturity (100.1 days), maximum number of pods per plant (44) and number of seeds per pod (3.62), grain yield (1812 kg/ha) and straw yield (218 kg/ha). This treatment recorded the minimum consumptive use of water (203.5 mm) and rate of moisture use (1.36 mm/day) but the moisture use efficiency was maximum (12.34 kg/ha-mm). Treatment M5 recorded the maximum growing degree days (2182°C day), heliothermal unit (15077°C day hrs), photothermal unit (22595°C day hrs) and heat use efficiency (0.94 kg/ha/°C) to reach maturity. Chickpea when combined with suitable date of sowing and moisture conservation practices for proper utilization of carry-over residual soil moisture in the rice fallows gives higher yield.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"6 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140243814","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}

{"title":"Residual Effects of Microbial Treated Paddy Residues Applied to Zero Till Maize on Growth and Yield of Summer Greengram","authors":"G. Rajitha, B. Padmaja, M. M. Reddy, A. Madhavi, S. Reddy, S. Triveni, M. Yakadri","doi":"10.18805/lr-5230","DOIUrl":"https://doi.org/10.18805/lr-5230","url":null,"abstract":"Background: Farmers’ conventional tillage and residue removal practices in rice-maize-greengram systems in India are input-intensive, costly and soil degradative. A number of soil quality issues have emerged due to continuous cropping and burning of residues threatening the sustainability of rice based cropping systems for the last more than four decades. Nevertheless, the in-situ or in-field decomposition of crop residue using microbial inoculum is rarely studied. This necessitated the use of microbial consortia developed by a combination of potent strains of fungi which can perform harmoniously for rapid decomposition of crop residues. Methods: A field experiment was conducted during 2020-21 and 2021-22 with eight residue-management treatments and three fertility levels to zero till maize at college farm, Rajendranagar, PJTSAU using strip plot design and the residual effect on the succeeding greengram was studied. Result: Greengram growth and yield were significantly higher under residual effect of incorporation of residues treated with microbial consortia consisting of Trichoderma viridae, Aspergillus awamori and Phanerocheate spp. along with 300:100:100 kg ha-1 of N, P2O5 and K2O (125% RDF) and P supplied in the form of single super phosphate (SSP) under zero tillage during summer, 2021 and 2022. Growth parameters like plant height, leaf area index, dry matter production and yield attributes like number of pods plant-1, pod length and number of seeds pod-1 in greengram were higher under residue incorporated plots compared to residue burning, removal and retention plots with 125% RDF.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"43 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140242600","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}

{"title":"Biological Control of Gummy Stem Blight Caused by Didymella bryoniae (Auersw.) on Watermelon by Bacillus sp. Strains","authors":"T. Tran, T. Ngo, D. H. Tran","doi":"10.18805/lrf-792","DOIUrl":"https://doi.org/10.18805/lrf-792","url":null,"abstract":"Background: The gummy stem blight caused by the fungal pathogen Didymella bryoniae (Auersw.) is a common and serious disease of watermelon plants in Vietnam. Bacillus species have been used to control plant diseases as biological control agents. The objectives of this studies were to determine the fungal inhibition of D. bryoniae and disease suppression of gummy stem blight under greenhouse by Bacillus sp. strains. Methods: The study was carried out at University of Agriculture and Forestry, Hue University during 2022-2023. Six potential Bacillus strains namely S1A1, S1F3, S13E2, S13E3, S18F11 and S20D12 isolated from stem-base of groundnut in central Vietnam were tested its fungal inhibition of D. bryoniae and disease suppression of gummy stem blight. Result: All tested strains of Bacillus sp. showed inhibition of the hyphal growth of D. bryoniae strain DB-01 in potato dextrose broth. Among the strains, Bacillus sp. S20F12 had highest inhibition of the growth of mycelia of D. bryoniae strain DB-01 with an antagonistic efficiency of 65.7% at 10 days after fungal inoculation. By 21 days after fungal inoculation, disease incidences were low in the plants treated with Bacillus sp. S20D12 and S1F3 by 46.6 and 50.0% and disease severity by 15,3% and 20.6%, respectively. As results, watermelon plants were prevented from damage of gummy stem blight caused by D. bryoniae strain BD-01 by Bacillus sp. S20D12 and S1F13. The results would contribute to the knowledge of antagonistic activities of the Bacillus to optimize the biological control against D. bryoniae.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"86 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140249482","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}

{"title":"Forage Nutritive Quality, Yield and Quantitative Analysis of Leguminous Fodder Cowpea-Maize System as Influenced by Integrated Nutrient Management in Southern Zone of India","authors":"S. R. Rangasami, S.Rani, S. D. Sivakumar, K.N. Ganesan","doi":"10.18805/lr-5277","DOIUrl":"https://doi.org/10.18805/lr-5277","url":null,"abstract":"Background: A significant impediment to the advancement of animal husbandry in India is the insufficient availability of green fodder throughout the year. The nutritive quality of forages is heavily influenced by farm-level management practices. Consequently, there is a pressing need to enhance productivity through the implementation of proper agronomic practices. The nutrient management in fodder-based cropping sequence is a key to maximize the fodder production and its quality. Methods: A field experiment was conducted using a randomized block design, consisting of twelve treatments incorporating various organic sources of nutrients. The experiment was replicated thrice during Kharif and Rabi season 2020-22 at Department of Forage Crops, Tamil Nadu Agricultural University, Coimbatore. The treatments included different proportions (100, 75, 50 and 25%) of the recommended dose of nitrogen applied through FYM, vermicompost and bio compost. Result: The experiment results of the three years study revealed that application of 50% RDN through FYM+ 50% RDN through vermicompost recorded the higher green fodder yield of 691 q/ha, dry matter yield of 130.7 q/ha and crude protein yield of 19.3 q/ha. Correlation and regression analysis also indicated that the growth and yield attributes had a positive impact on the fodder yield. Hence it can be recommended that application of FYM and vermicompost (50 and 50% RDN) found better source of organic nutrients for achieving sustainable and economical fodder yield with quality in fodder cowpea-maize cropping system.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"4 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254101","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}

{"title":"Effects of Mepiquat Chloride on Physiology of Soybean under Drought Stress","authors":"Xiaomin Hou, Feng Yan, Yang Dong, Fuyang Zhao, Qingquan Li, Huibo Shen","doi":"10.18805/lrf-782","DOIUrl":"https://doi.org/10.18805/lrf-782","url":null,"abstract":"Background: Drought is an important factor restricting the development of agriculture. In recent years, plant growth regulators have achieved more results in improving crop stress resistance. The physiological mechanism of exogenous application of mepiquat chloride on soybean seedlings has undergone significant changes under drought stress. Methods: In order to study the effect of exogenous chlorine on the physiology of soybean under drought stress., ‘Heinong 65’ was used as the experimental material, 15% PEG-6000 was used to simulate drought stress and different concentrations of mepiquat chloride solution (100, 300, 500, 700 mg/L) were sprayed at the three-leaf stage of soybean growth by pot method. The dry matter accumulation, auxin (IAA), zeatin (ZA), gibberellin (GA3), abscisic acid (ABA) content and superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX) activity of soybean were determined. Result: The results showed that the activities of antioxidant enzymes SOD, POD, CAT and APX in soybean leaves under drought stress were significantly increased by the treatment of appropriate concentration of mepiquat chloride solution. IAA, GA3 and ZA endogenous hormone levels increased, dry matter accumulation increased, root-shoot ratio and ABA endogenous hormone levels decreased significantly. It can be seen that mepiquat chloride treatment can improve the antioxidant capacity, promote the growth of soybean seedlings under drought stress and effectively alleviate the inhibition of drought stress on soybean growth and development.\u0000","PeriodicalId":503097,"journal":{"name":"LEGUME RESEARCH - AN INTERNATIONAL JOURNAL","volume":"269 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255871","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}