Genetic variability and heritability study in F2 population for yield, yiled attributes and Fibre quality traits in cotton (Gossypium hirsutum L.)

Abstract

The success of most crop improvement programmes depends on variability and heritability of desirable traits. An investigation was carried out during kharif 2017 at Botanical garden, University of Agricultural Sciences, Dharwad, India to assess the extent of variability generated by hybridization and to estimate the heritability and genetic advance as percent of mean for seed cotton yield and its component traits in F2 generation of cross RHAP-12 × RHAP-7. The segregating population thus obtained was evaluated for sixteen quantitative traits. A wide range of variation was observed for traits number of monopodia per plant, boll weight and seed cotton yield per plant. High phenotypic coefficient of variation and genotypic coefficient of variation were recorded for traits monopodia per plant, boll weight and seed cotton yield per plant. High heritability coupled with moderate to high genetic advance was recorded for all traits under consideration in the F2 population. Most of the characters including seed cotton yield per plant recorded high heritability couple with moderate to high genetic advance as per cent of mean.