Estimation of Genetic Correlation Coefficient and Path Coefficient for yield and Its Component Traits in Rice (Oryzasativa L.)

Abstract

Genotypic and phenotypic correlation coefficients were computed from thirty seven rice genotypes for twelve quantitative yield and yield component traits. The experimental materials were laid down in a Randomized Complete Block Design with three replications.Grain yield per plant was found highly significant and positive association with panicle length, biological yield per plant and harvest index. Days to panicle emergence were also highly significant positive correlations with days to 50 percent flowering, days to maturity, 1000-grain weight with husk and 1000-grain weight without husk. Biological yield per plant was observedhighest positive direct effect on grain yield per plant followed by harvest index, 1000-grain weight without husk, number of productive tillers per plant, 1000-grain weight with husk and panicle length. Therefore, these results indicate that these characters can be used for grain yield selection in further crop improvement programme.