Home / Articles
Heritability and Association among Yield Component Traits of Bread Wheat
This research was conducted at the Agriculture University Peshawar during rabi season 2020–21 to determine genetic parameters and correlation coefficients for flowering and yielding traits of 36 common wheat (Triticum aestivum L.) entries, including five check cultivars. Entries were evaluated using simple RCBD consisting of two replications. Parameters studied were Days to heading and yield component traits, such as number of spikes m-2, spike length, number of seeds spike-1, 1000-seed weight, biological and seed yield. Genotypes differed significantly for the studied traits. Estimated Heritability varied from 0.32 to 0.79. Maximum heritability was recorded for 1000-seed weight (0.79) followed by days to heading (0.73), spike length (0.54), spikes m-2 (0.45), biological yield (0.40), seed yield (0.38) while low and least heritability for seeds spike-1 (0.32). Thousand grain weight and days to heading had high heritability and hence effectively can be selected. Spike length and seeds spike-1 showed significant positive correlation (0.62**) with each other. Similarly, seed yield had positive association with spikes m-2 (0.64**) and biological yield (0.96**). In current study, genotypes G116-B and G51 were best for high yield and are therefore, recommended for further testing under late sowing conditions in Khyber Pakhtunkhwa.
Keywords: Spring wheat, Genetic variability, Heritability, Correlation coefficients, Genotypes