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首页> 外文期刊>African Journal of Biotechnology >Studies on effects of salicylic acid and thiourea on biochemical activities and yield production in wheat (Triticum aestivum var. Gimaza 9) plants grown under drought stress
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Studies on effects of salicylic acid and thiourea on biochemical activities and yield production in wheat (Triticum aestivum var. Gimaza 9) plants grown under drought stress

机译：水杨酸和硫脲对干旱胁迫下小麦（Triticum aestivum var。Gimaza 9）植物生化活性和产量的影响

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Drought is a problem of water deficit in the soil. It causes restrictions of wheat plants growth and productivity. In the present approach, we explored new methods for drought managment. Wheat grains were presoaked in ~1 mmol salicylic acid (SA). Wheat was left to grow with 40% soil water holding capacity in pots until yielding stages. The leaves which were produced were two-times sprayed with 2.5 and 5 mmol thiourea (Th) before anthesis. Morphological and biochemical traits were analyzed on the heading stage in addition to yield and yield components. Results show a conspicuous anti-drought effect in pretreated-compared to untreated-wheat. For example, pretreated wheat with SA and/or Th, possessed a significant increase in carotenoids, antioxidant enzymes activities and some metabolites (growth promotors, photosynthetic pigments, carbohydrates, nitrogenous constituents and minerals). On the contrary, lipid peroxidation and H2O2?decreased in level under the effect of external treatments. Wheat general morphology and yield components were generally improved upon SA and/or Th pretreatments. These data reinforced further investigations to reveal the reason behind the anti-drought responses in treated wheat with low doses of SA and/or Th before and during exposure to a progressive drought.
机译：干旱是土壤缺水的问题。它限制了小麦植物的生长和生产力。在目前的方法中，我们探索了干旱管理的新方法。将小麦籽粒预先浸泡在〜1 mmol水杨酸（SA）中。使小麦在盆中保持40％的土壤持水能力，直至产量高。在开花之前，将产生的叶片两次用2.5和5mmol硫脲（Th）喷雾。在抽穗阶段，除了产量和产量组成部分外，还分析了形态和生化特性。结果表明，与未处理的小麦相比，预处理的小麦具有明显的抗干旱作用。例如，使用SA和/或Th预处理的小麦的类胡萝卜素，抗氧化酶活性和某些代谢物（促进生长的物质，光合色素，碳水化合物，含氮成分和矿物质）显着增加。相反，在外部治疗的作用下，脂质过氧化和过氧化氢的水平降低。通过SA和/或Th预处理，小麦的一般形态和产量成分通常得到改善。这些数据加强了进一步的研究，以揭示在进行性干旱之前和之中，低剂量的SA和/或Th处理过的小麦抗干旱反应背后的原因。

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