Vol. 10, Issue 12 (2021)

Author(s):
Hake PA and Dr. KD Bhoite

Abstract:
Genetic variability was assessed in rice (Oryza sativa L.) germplasms with 50 genotypes of rice collected from various sources which were evaluated in RBD at ZARS, Igatpuri during kharif 2020. The analysis of variance for eleven characters indicated the appreciable amount of variability was present in the material under study. Genotypic coefficient of variation (GCV) was lower than the phenotypic coefficient of variation (PCV) for all the characters under study. The high GCV and PCV was observed for plant height, panicle length, number of panicles plant^-1, number of spikelets panicle^-1, number of fertile spikelets panicle^-1, number of infertile spikelets panicle^-1, test weight and grain yield plant^-1. The characters such as plant height, number of spikelets panicle^-1 and number of fertile spikelets panicle^-1 exhibited high heritability coupled with high genetic advance indicating that most likely heritability is due to additive gene effect and selection may be effective for these characters. High heritability coupled with moderate genetic advance was observed in days to 50% flowering, days to physiological maturity, number of infertile spikelets plant^-1, spikelet fertility and grain yield plant^-1 indicating that additive and non-additive both gene action were present.