Evaluation of physiological markers for assessing drought tolerance and yield potential in bread wheat.

ABSTRACT: Carbon isotope discrimination (Δ) has been recognized as a valuable phenotyping tool in wheat breeding. However, technical expertise and analysis cost restrict its large-scale use. We examined the associations of ash content (AC), minerals content (Ca, K, Mg, Fe and Mn) and leaf chlorophyll content (Chl) with grain Δ and grain yield (GY) to assess their potential as substitute to grain Δ. We evaluated 49 wheat genotypes under two water deficit regimes (W₁₂₀ and W₂₀₀) in a rain-out shelter. Leaf chlorophyll content (Chl) was strongly correlated with grain Δ and GY under moderate water deficit regime (W₂₀₀). Significant and negative correlations (P < 0.01) of AC and potassium concentration (K) with grain Δ, and between AC and GY was obser

SUBMITTER: Yasir TA 

PROVIDER: S-EPMC6745756 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature