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首页> 外文期刊>Pakistan journal of botany >Role of phytohormones under induced drought stress in wheat
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Role of phytohormones under induced drought stress in wheat

机译：植物激素在小麦干旱诱导中的作用

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摘要

The performance of plants (grown in pots) was studied for drought induced at critical stages of grain filling. Furthermore, the effect of abscisic acid (ABA) and benzyladenine (BA), were also studied on the physiology of plants during grain filling. Seeds of two wheat varieties cv Margalla-99 (cv1) and cv Manthar-2003 (cv2) were sown in pots. Stress treatments were imposed immediately after anthesis. Drought stress resulted in maximum decrease in IAA and GA content but proline and ABA content of leaves showed maximum increase at hard dough stage in cv1. With decrease in soil moisture content under induced drought stress, the percentage decrease in IAA and GA and increase in proline and ABA was greater in leaves and spikes of potted plants. All parameters showed greater decrease in cv2 than in cv1. Application of both ABA and BA, each at 10-6M applied at anthesis stage, was involved in osmoregulation by the production of proline. The adverse effect of drought started at anthesis stage reaching maximum at hard dough stage. ABA was more effective at the later stages of grain filling whereas, BA was more effective at early stages.
机译：研究了在灌浆关键阶段干旱引起的植物（在盆中生长）的性能。此外，还研究了脱落酸（ABA）和苄基腺嘌呤（BA）对谷物灌浆过程中植物生理的影响。在花盆中播种了两个小麦品种Cv Margalla-99（cv1）和Cv Manthar-2003（cv2）的种子。花后立即施以压力治疗。干旱胁迫导致cv1硬生面团阶段IAA和GA含量最大下降，但叶片的脯氨酸和ABA含量最大。随着诱导干旱胁迫下土壤水分含量的降低，盆栽植物叶片和穗状花序中IAA和GA的减少百分比以及脯氨酸和ABA的增加百分比更大。与cv1相比，cv2中的所有参数均显示出更大的下降。在花期阶段，ABA和BA的施用量分别为10-6M，通过脯氨酸的产生参与渗透调节。干旱的不利影响始于花期，在硬面团期达到最大。 ABA在籽粒灌装的后期更为有效，而BA在初期则更为有效。

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