Estimation of Genetic Variability Parameters in Different Genotypes of Rice (Oryza sativa L.)

Abstract

Studies on different genetic variability parameters viz., genotypic coefficient of variation (GCV), phenotypic coefficient 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 analysis of 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 variability for these characters so, direct selection for these characters would be effective. The characters viz., number of productive tillers per plant and grain yield per plant exhibited high heritability coupled with high genetic advance indicating the involvement of additive gene action in the inheritance of these traits hence simple selection would be rewarding.

Reflex of Different Pest Management Modules against Sucking Insect-pests and Pod Borer for the Safety of Beneficial Insects in Vegetable French Bean (Phaseolus vulgaris L.)

“…The present findings are in conformity with the findings of Kaniuczak and Matosz (1998) who revealed that new insecticide imidacloprid has considerable potential in faba bean IPM programs. Meena et al, (2020) revealed that, imidacloprid and thiamethoxam were most effective with maximum population reduction over untreated control (75.97 and 72.92%, respectively). Similar results were also reported by Bora et al (2016) against cowpea aphids, Aslam and Ahmad (2001,2002) against mustard and turnip aphid.…”