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Efficiency of seed bio-priming technique for healthy mungbean productivity under terminal drought stress
Journal of Integrative Agriculture ( IF 4.6 ) Pub Date : 2020-12-11 , DOI: 10.1016/s2095-3119(20)63184-7
Hamid NAWAZ , Nazim HUSSAIN , Niaz AHMED , Haseeb-ur-REHMAN , Javaiz ALAM

Recently, drought-induced damaging impact in reducing the crop growth and development is drastically ranked at the top under various abiotic stresses. And especially water stress at the reproductive growth stages termed as terminal drought has become a severe threat for mungbean productivity. To mitigate the drought stress condition, “bio-priming” has emerged as a newly agronomic and sustainable technique in improving the mungbean production. A 2-year field study during Kharif season 2017–2018 was conducted to investigate the efficacy of rhizobacteria seed priming in mungbean (AZRI mung-06), at Agronomic Research Area, Department of Agronomy, Bahauddin Zakariya University, Multan, Pakistan. The experiment comprised two factors containing FA (seed treatments, control (dry seeds), hydro-priming, silicon (Si)-priming, and bio-priming (mixture strains of Pseudomonas fluorescens+Rhizobium phaseoli)) and FB (irrigation water-regimes at various growth stages including leaf formation (L), stem elongation (S)+flowering (F)+pod formation (P) containing treatments are normal irrigation (IL+S+F+P) and terminal drought stress (IF+P)). All the treatments were arranged in randomized complete block design under factorial design and were replicated thrice. Results indicated that the exposure of drought stress at flowering and pod formation stages hampered the morpho-physiological growth and yield of mungbean. Nevertheless, seed priming treatments particularly bio-priming were effective in alleviating the detrimental effects of drought stress. Bio-priming significantly increased the yield and yield components (seeds/plant, 1 000-grain weight and harvest index) of mungbean and regulated the activities/levels of antioxidants (superoxide dismutase, catalase, peroxidase, ascorbic acid, and total phenolics) under drought stress. Compared with the control, bio-priming increased the seed yield of mungbean by 8–12% under normal as well as drought stress conditions during both years of study. Bio-priming also improved the nutrient uptake behavior followed by Si- and hydro-priming treatments under terminal drought stress. The study emphasized the effectiveness of bio-priming as dual seed treatment method may be helpful for vigorous germination of mungbean production along with plant tolerance against terminal drought stress. Among the various treatments, plants treated with bio-priming technique compensated the grain yield due to having strong antioxidant defense system and better nutrient uptake behaviour under terminal drought stress. Economic analysis also concluded that bio-priming is the easiest, cost-effective, friendly, and sustainable approach for the maximization of the mungbean production.



中文翻译:

种子生物引发技术对干旱胁迫下绿豆健康生产力的影响

最近,在各种非生物胁迫下,干旱导致的减少农作物生长和发育的破坏性影响居首位。尤其是在称为极端干旱的生殖生长阶段,水分胁迫已成为对绿豆生产力的严重威胁。为了缓解干旱胁迫条件,“生物引发”技术已经成为提高绿豆产量的一项新的农艺和可持续技术。在巴基斯坦木尔坦Bahauddin Zakariya大学农学系农学研究区,于2017-2018年卡里夫季节进行了为期2年的田野研究,以研究绿根菌种子引发的功效(AZRI mung-06)。该实验包含两个包含F A的因素(种子处理,对照(干种子),加水启动,硅(Si)启动和生物启动(荧光假单胞菌+根瘤菌的混合菌株))和F B(处于不同生长阶段的灌溉水制度,包括叶片)形成(L),茎伸长(S)+开花(F)+荚形成(P)的处理方法为正常灌溉(IL + S + F + P)和终末干旱胁迫(IF + P)))。所有处理均按析因设计安排在随机完整区组设计中,并重复三次。结果表明,干旱胁迫在开花期和荚果形成阶段的暴露阻碍了绿豆的形态生理生长和产量。然而,种子引发处理,特别是生物引发,在减轻干旱胁迫的有害影响方面是有效的。生物引发显着增加了绿豆的产量和产量成分(种子/植物,1000粒重和收获指数),并调节了抗氧化剂(超氧化物歧化酶,过氧化氢酶,过氧化物酶,抗坏血酸和总酚类)的活性/水平。干旱压力。与对照相比,在这两年的研究中,在正常以及干旱胁迫条件下,生物引发使绿豆的种子产量提高了8-12%。在终端干旱胁迫下,生物引发还改善了养分吸收行为,随后进行了硅和水引发处理。研究强调生物引发作为双重种子处理方法的有效性可能有助于绿豆生产的萌发以及植物对最终干旱胁迫的耐受性。在各种处理方法中,由于在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,因此采用生物引发技术处理过的植物补偿了谷物的产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,最具成本效益,友好和可持续的方法。在终端干旱胁迫下,生物引发还改善了养分吸收行为,随后进行了硅和水引发处理。研究强调生物引发作为双重种子处理方法的有效性可能有助于绿豆生产的萌发以及植物对最终干旱胁迫的耐受性。在各种处理方法中,由于在极端干旱胁迫下具有强大的抗氧化剂防御系统和更好的养分吸收特性,因此用生物引发技术处理过的植物补偿了谷物的产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,经济,友好和可持续的方法。在终端干旱胁迫下,生物引发还改善了养分吸收行为,随后进行了硅和水引发处理。研究强调生物引发作为双重种子处理方法的有效性可能有助于绿豆生产的萌发以及植物对最终干旱胁迫的耐受性。在各种处理方法中,由于在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,因此采用生物引发技术处理过的植物补偿了谷物的产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,最具成本效益,友好和可持续的方法。研究强调生物引发作为双重种子处理方法的有效性可能有助于绿豆生产的萌发以及植物对最终干旱胁迫的耐受性。在各种处理中,由于在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,因此使用生物引发技术处理过的植物补偿了谷物的产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,最具成本效益,友好和可持续的方法。研究强调生物引发作为双重种子处理方法的有效性可能有助于绿豆生产的萌发以及植物对最终干旱胁迫的耐受性。在各种处理中,由于在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,因此使用生物引发技术处理过的植物补偿了谷物的产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,经济,友好和可持续的方法。经过生物引发技术处理的植物在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,从而补偿了谷物产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,最具成本效益,友好和可持续的方法。经过生物引发技术处理的植物在极端干旱胁迫下具有强大的抗氧化防御系统和更好的养分吸收特性,从而补偿了谷物产量。经济分析还得出结论,生物引发是使绿豆产量最大化的最简单,最具成本效益,友好和可持续的方法。

更新日期:2020-12-13
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