Vol. 11, Issue 1 (2022)

Author(s):
V Venkanna, K Rukmini Devi, Y Hari, B Satish Chandra, N Lingaiah and K Rajendra Prasad

Abstract:
The present investigation was carried to estimate the variability and heritability in elite promising rice genotypes. The analysis of variance exhibited the significant differences due to genotype for all the characters studied. The values of genotypic and phenotypic coefficients of variation (GCV and PCV) were moderate to high for no. of grains/panicle and test weight and yield. High heritability was observed for days to 50% flowering, panicle length, no. of grains per panicle, plant height, test weight and yield. High heritability coupled with high genetic advance as percent of mean was found for no. of grains per panicle, test weight and yield indicating the preponderance of additive type of gene action for the expression of these characters and selection may be effective for improving these characters. Present study revealed that there was good amount of genetic variability in the traits i.e number of grains/panicle and test weight, selection would be more effective for developing high yielding genotypes.