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首页> 外文期刊>African Journal of Biotechnology >Evaluating spring wheat cultivars for drought tolerance through yield and physiological parameters at booting and anthesis
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Evaluating spring wheat cultivars for drought tolerance through yield and physiological parameters at booting and anthesis

机译：通过启动和开花期的产量和生理参数评估春小麦品种的耐旱性

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Progress in wheat yields under drought conditions is rather a difficult task to achieve. The experiment was conducted in factorial design with 16 spring wheat cultivars grown under two irrigation regimes, non-stress and water-stress imposed at boot and anthesis growth stages. Water-stress significantly influenced the physiological and yield traits in both the growth stages, yet the reductions in most traits were pronounced at anthesis than at boot. Stomatal conductance, relative water content, leaf area (LA), seeds/spike, 1000-grain weight and grain yield/plant were the best drought tolerant indicators. On the basis of physiological and yield traits, the cultivars Moomal, Bhitai, TD-1, and Abadgar proved to be the best performing in water-stress conditions. Stomatal conductance, RWC% and LA were significantly and positively correlated with grain yield/plant. These results suggest that the stomatal conductance, relative water content and leaf area are the most important traits that should be considered while developing drought tolerant wheat genotypes.
机译：在干旱条件下提高小麦产量是一项艰巨的任务。该试验是在16个春小麦品种的析因设计中进行的，该品种在两种灌溉制度下进行，在启动和花期生长阶段均施加了非胁迫和水分胁迫。水分胁迫在两个生长期都显着影响其生理和产量性状，但是大多数性状的降低在花期比在启动时明显。最佳的耐旱指标是气孔导度，相对含水量，叶面积（LA），种子/穗，1000粒重和谷物产量/植物。根据生理和产量特性，Moomal，Bhitai，TD-1和Abadgar品种在缺水条件下表现最佳。气孔导度，RWC％和LA与籽粒产量/植株显着正相关。这些结果表明，气孔导度，相对含水量和叶面积是开发耐旱小麦基因型时应考虑的最重要特征。

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