ESTIMATION OF GENETIC VARIABILITY PARAMETERS INDIFFERENT GENOTYPES OF RICE (ORYZA SATIVA L.)Deepak Meena, Manoj Kumar, Sandhya, R.K. Meena and J.K. MeenaAbstract Studies on different genetic variability parameters viz., genotypic coefficient of variation (GCV), phenotypiccoefficient of variation (PCV), heritability and genetic advance were carried out with 25 genotypes of Rice(Oryza Sativa L.) for 10 characters at Agriculture Research Station, Ummedganj, Kota, Rajasthan. The analysisof variance indicated the existence of significant differences among genotypes for all the characters studied.High GCV and PCV values were observed for grain yield per plant, number of productive tillers per plant,number of grains per panicle and 1000-grain indicating the presence of good amount of genetic variabilityfor these characters so, direct selection for these characters would be effective. The characters viz., numberof productive tillers per plant and grain yield per plant exhibited high heritability coupled with high geneticadvance indicating the involvement of additive gene action in the inheritance of these traits hence simpleselection would be rewarding. |