INTEGRATIVE MORPHO-PHYSIOLOGICAL AND GENETIC CHARACTERIZATION OF BARLEY GENOTYPES FOR CLIMATE RESILIENCE UNDER WATER DEFICIT CONDITIONS

文献类型： 外文期刊

第一作者： Ahmed, H. G. M. D.

作者： Ahmed, H. G. M. D.;Yang, J.;Yang, X.;Zeng, Y.;Ahmed, H. G. M. D.;Akram, M. I.;Iqbal, R.;Iqbal, R.;Alwahibi, M. S.;Elshikh, M. S.

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关键词： drought; cereal; yield; heritability; environments

期刊名称：APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH （ 影响因子：0.6； 五年影响因子：0.8 ）

ISSN： 1589-1623

年卷期： 2025 年 23 卷 3 期

页码：

收录情况： SCI

摘要： Drought is a major global challenge that threatens crop productivity, quality, and sustainable agriculture. Water deficit conditions induce physiological and genetic impairments in field crops, negatively impacting seed germination, growth, and overall development. This study aimed to assess the morpho-physiological and genetic responses of diverse barley genotypes to water deficit conditions, providing insights into climate resilience. A total of 95 barley genotypes were evaluated under normal and water deficit-stressed environments using a completely randomized design with three replications. The results revealed significant genetic variation across all studied traits. Notably, root-shoot length exhibited the lowest reduction percentage (RP), while root length, fresh seed weight, dry seed weight, relative water content, relative injury, cell membrane thermo-stability, carotenoids, and chlorophyll b displayed strong positive correlations. Shoot length, however, showed a non-significant association with all attributes. High heritability estimates for root length suggest a strong additive genetic effect, indicating its potential for genetic improvement. The genotypes G1, G25, and G61 exhibited minimal RP values and were identified as water deficit-tolerant, whereas G5, G16, and G77 showed higher RP values, categorizing them as water deficit-susceptible. The biplot analyses further confirmed the similar classification of drought tolerant and susceptible genotypes consistency across environments. These findings highlight key selection traits for breeding water deficit-resilient barley cultivars, contributing to sustainable agricultural practices in waterlimited environments.

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