Vol. 10, Issue 12 (2021)

Author(s):
P Ram Prabhu Naik, BNVSR Ravi Kaumar, J Dayal Prasad Babu and V Srinivasa Rao

Abstract:
A study was undertaken to find out the genetic variability, heritability, genetic advance and path coefficient analysis for grain yield and yield traits of rice restorers. High PCV and GCV were observed for number of unfilled grains per panicle (76.42% and 55.38%) and pollen sterility (52.20% and 51.29%). High heritability coupled with high genetic advance as per cent of mean was observed for plant height (91% and 22.01%), number of ear bearing tillers per plant (62% and 26.22%), pollen sterility (96% and 103.81%), number of filled grains per panicle (64% and 30.35%) and single plant yield (93% and 79.98%). The high estimates of heritability coupled with moderate genetic advance as per cent of mean was observed for days to 50% flowering (94% and 13.40%) and days to maturity (95% and 10.14%). High heritability coupled with low genetic advance was observed for traits panicle length. Path coefficient analysis revealed plant height (0.1714 and 0.1276), number of ear bearing tillers per plant (0.1585 and 0.2222) and panicle length (0.1285 and 0.0461) showed direct positive effect towards yield and positive correlation with yield at both the levels.