Genetic Studies for Quality Traits of F2 Population in Rice (Oryza sativa L.).

ABSTRACT

In the present investigation F2 population of 36 crosses were studied to estimate the variability, heritability, and genetic advance and genetic advance as percentage of mean for agronomic and grain quality traits. The Genotypic Coefficient of Variation (GCV) and Phenotypic Coefficient of Variation (PCV) were low to moderate with low heritability and genetic advance for harvest index indicating that the character is highly influenced by non-additive genetic effects and thus the selection would be ineffective. The moderate heritability and genetic advance were recorded for grain quality characters viz., kernel length, kernel breadth and L/B ratio. Moreover phenotypic and genotypic coefficients of variances were low which indicated the presence of nonadditive gene action.