Incredible Role of Osmotic Adjustment in Grain Yield Sustainability under Water Scarcity Conditions in Wheat (Triticum aestivum L.)

文献类型： 外文期刊

第一作者： Mahmood, Tahir

作者： Mahmood, Tahir;Abdullah, Muhammad;Ahmar, Sunny;Yasir, Muhammad;Iqbal, Muhammad Shahid;Rana, Rashid Mehmood;Nawaz Shah, Muhammad Kausar;Yasir, Muhmmad;Du, Xiongming;Ur Rehman, Shoaib;Ahmed, Sulaiman;Ghafoor, Abdul;Mora-Poblete, Freddy

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关键词： drought tolerance; osmotic adjustment; physiological and morphological attributes; grain weight; yield sustainability; screening tools; wheat (Triticum aestivum L.)

期刊名称：PLANTS-BASEL （ 影响因子：3.935； ）

ISSN：

年卷期： 2020 年 9 卷 9 期

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收录情况： SCI

摘要： Interrogations of local germplasm and landraces can offer a foundation and genetic basis for drought tolerance in wheat. Potential of drought tolerance in a panel of 30 wheat genotypes including varieties, local landraces, and wild crosses were explored under drought stress (DS) and well-watered (WW) conditions. Considerable variation for an osmotic adjustment (OA) and yield components, coupled with genotype and environment interaction was observed, which indicates the differential potential of wheat genotypes under both conditions. Reduction in yield per plant (YP), thousand kernel weight (TKW), and induction of OA was detected. Correlation analysis revealed a strong positive association of YP with directly contributing yield components under both environments, indicating the impotence of these traits as a selection-criteria for the screening of drought-tolerant genotypes for drylands worldwide. Subsequently, the association of OA with TKW which contributes directly to YP, indicates that wheat attains OA to extract more water from the soil under low water-potential. Genotypes including WC-4, WC-8 and LLR-29 showed more TKW under both conditions, among them; LLR-29 also has maximum OA and batter yield comparatively. Result provides insight into the role of OA in plant yield sustainability under DS. In this study, we figure out the concept of OA and its incredible role in sustainable plant yield in wheat.

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