Role of genetic variability in yield and yield attributing traits in rice (Oryza sativa L)

Fifty three genotypes of rice were evaluated for the genetic variability present in the material for yield and yield contributing traits. The phenotypic coefficient of variation (PCV) was higher than genotypic coefficient of variation (GCV) for all the characters. High heritability, along with higher genetic advance as per cent of mean, was recorded for test weight, plant height, number of filled grains per panicle, number of unfilled grains per panicle, number of total grains per panicle, number of panicles per plant, number of total tillers per plant, biological yield per plant, grain yield per plant and harvest index. The results indicated that such characteristics can be improved through mass selection and hybridization methodologies based on the selection of progeny.