Analysis of Genetic Variability, Heritability and Genetic Advance for Yield and Yield Components in Low Land Rice

Estimates of genetic variability, heritability and genetic advance were studiedin 65 low land rice genotypes. Phenotypic coefficient of variation (PCV) was higher than genotypic coefficient ofvariation (GCV) for all the 12 studied characters indicating the influence of environment on the characters. Grains per panicle had maximum GCV followed by plot yield, grain yield per plant, harvest index, panicle number, plant height and 1000-seed weight. A moderate to high degree of heritability estimates and genetic advance was for days to 50% flowering, plant height and grains per panicle. Moderate heritability values with low genetic advance was observed for panicle length, plot yield, 1000 grain weight, grain weight per plant and harvest index.