Studies on genetic variability parameters and character association in bread wheat (Triticum aestivum L.) under timely and late sown environments of irrigated condition
AbstractSixteen diverse bread wheat genotypes studied at Agharkar Research Institute, Pune (Hol Farm) during rabi season of 2016-17. The present study revealed that the mean sum of squares due to genotypes was recorded significant for all the traits studied except grain yield per plot and harvest index in timely and late sown condition. The treatment versus genotype found significant among the traits days to heading and biomass per plot. The estimates of GCV, PCV, heritability and genetic advance were high to moderate in both conditions for the days to heading, productive tillers per meter, TGW, grain per spike, grain weight per spike, biomass per plot and grain yield per plot. Correlation coefficient reveled that, biomass per plot, productive tiller per meter, days to maturity gave the positive association with grain yield per plot in both the environments. One genotype was tolerant to grain yield per plot viz., HD 3219 (TS = 1052, LS = 934) under timely sown and late sown environments. It has been found that wheat genotypes differ their ability to respond to heat, there by tolerance, which could be useful as a genetic stock to develop wheat tolerant genotypes in wheat
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