Vol. 12, Issue 4 (2023)

Author(s):
Vivek Kumar Kujur, Abhinav Sao, MK Singh and Ajay Tiwari

Abstract:
The purpose of this research was to determine the variability, heritability, correlation and path coefficient analyses of 48 rice genotypes. The experiment was carried out in a RCBD with two replications. All 13 characters mean sum of squares were significant, which shows that there is a lot of genetic variation in these variables. The high magnitude of PCV and GCV have been estimated for number of unfilled grains per panicle followed by grain yield per plant, biological yield per plant, number of filled grain per panicle and number of effective tillers per plant. High magnitude of heritability along with high genetic advance as percent of mean was observed for plant height followed by number of unfilled grains per panicle, biological yield per plant, grain yield per plant, spikelet fertility %, flag leaf length, harvest index, number of filled grain per panicle and 1000 seed weight. The results showed that biological yield, harvest index, number of effective tillers per panicle, number of filled grains per panicle, spikelet fertility percent and harvest index were all positively and significantly associated with grain yield per plant. Days of 50% flowering, plant height, number of filled grains per panicle, flag leaf length, biological yield per plantand harvest index all had a direct positive effect on yield per plant at the genotypic level, indicating their significance during selection in the yield improvement program. Additionally, the knowledge gained from this study can be used in upcoming rice breeding programs.