Mitigation of Salinity Stress Effects on Growth, Physio-Chemical Parameters and Yield of Snapbean (Phaseolus vulgaris L.) by Exogenous Application of Glycine Betaine
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引用次数: 18
Abstract
Pots experiment was carried out during season 2017 at greenhouse of the Agric. Bot. Dep., Fac. of Agric., Zagazig Univ., Egypt to evaluate the effect of glycine betaine (GB) application under salinity stress (50 and100 mM NaCl) on growth, physio-chemical analysis and yield of snap bean cv. Bronco. A complete randomized blocks design was used in this search with three replications. Growth parameters, chlorophyll content and green pod yield were significantly decreased with subjecting plants to NaCl. However foliar application of GB detoxified the stress generated by NaCl and significantly improved the above mention parameters. Salinity stress increased the electrolyte leakage (EL) and decreased membrane stability index (MSI) and relative water content (RWC). While foliar application of GB was improved MSI and RWC and minimized EL. Proline content and antioxidant enzymes significantly increased in the response to NaCl stress as well as GB application.
盆栽试验于2017季在农垦大棚进行。机器人。前沿空中管制官管理。。阿格利司。研究了盐胁迫(50和100 mM NaCl)下施用甘氨酸甜菜碱(GB)对菜豆生长、理化分析和产量的影响。野马。本研究采用完全随机区组设计，有三个重复。NaCl处理显著降低了植株的生长参数、叶绿素含量和绿荚产量。叶面施用GB可有效解毒，并显著改善上述参数。盐胁迫增加了电解质泄漏(EL)，降低了膜稳定指数(MSI)和相对含水量(RWC)。叶面施用GB提高了MSI和RWC，降低了EL。脯氨酸含量和抗氧化酶在NaCl胁迫和GB处理下显著升高。
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