Pattern of inheritance and nature of heterosis were examined for oil content and seven other economic traits. Small positive heterosis was noticed for oil content over mid parent value. Relatively higher heterotic effects were noticed for oil index. Both gca and sca effects were highly significant for oil index. Additive (D) and nonadditive (H1 and H2) gene effects were highly significant for oil percentage and oil index. Dominance component (H1), however, was higher than the additive (D) component. The gca effects were more Important for fibre span length, bundle strength, and lint per seed. The sca effects were important for fibre fineness, micronaire, and uniformity ratio. Associations of oil content and oil index with lint yield and the fibre quality attributes were not found to be significant. Moderate heritability (25.53%) was observed for oil content.
Gossypium hirsulum, oil content, combining ability, fibre quality
