Estimation of Variation and Heritability of Some Physio-morphic Traits of Wheat under Drought Condition
Muhammad Aslam Chowdhry
Six wheat genotypes were evaluated following a 6x6 diallel. cross to determine the heritability and variation for some physio-morphic traits under drought condition. Parental genotypes and their hybrids differed significantly for all the characters studied including leaf venation, stomatal frequency, stomata size, epidermal cell size, flag leaf area, grains per spike, 1000-kernel weight and grain yield per plant. High estimates of both broad and narrow sense heritability estimates indicated that leaf venation, stomata size, epidermal cell size, grains per spike, 1000-grain weight and grain yield per plant were highly heritable in the breeding material used in this study. A fairly high amount of genetic variation for these traits was transmitted to the offsprings and almost whole of that variation was additive in nature. Thus, single plant selection for these traits can be practiced during early generations of offsprings with high efficiency.
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