Parul RANA, Om P. BISHNOI, Harsh CHAURASIA, Rishi K. BEHL

Genetic Variability and Correlation Coefficient Analysis in Wheat Genotypes for Grain Yield and Its Contributing Traits under Drought and Irrigated Condition

Direct phenotypic selection in wheat improvement program requires preliminary knowledge of traits association degrees. In this study, a field experiment was conducted on the wheat crop in two different conditions (irrigated and drought), in order to determine the degree and direction of the association between grain yield and its attributing characters. The experimental findings indicated that correlation coefficients showed a highly significant and positive association between grain yield and harvest index followed by above ground biomass. However, other traits have a significant indirect impact on grain yield through the harvest index and above ground biomass. According to this, choosing genotypes with higher yields would be more effective if selection were based on these traits. The minimum yield reduction irrigated conditions was observed for the genotypes WH1127, WH1164, WH1105, WH1080, IC498438, EC609554, and EC609575. In the light of the fact that these genotypes have the higher yield potential under moisture stress condition and could be utilized as donors in bread wheat improvement program for drought tolerance.

Keywords:

Correlation coefficient, GCV, grain yield, PCV and wheat,

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