A field experiment was conducted to study the genetic variability involve 38 genotypes for seed yield and its component traits in mungbean at ARS (Agriculture University, Jodhpur), Mandor, Jodhpur during Kharif 2019. Good amount of genetic variability has been reported in green gram for various characters such as days to flowering, days to maturity, plant height, harvest index, pods per plant, protein content etc. and their utilization in breeding programme resulted in identification and release of good number of improved varieties. However, these released types cannot be continued longer due to genetic erosion and susceptibility to diseases and pests. Thus, pulse improvement programmes emphasized the urgency of generating variability for high yield potential and identify the genotypes for new niches. It is very essential to understand the genetic nature of varieties, gene action governing yield and its component traits increase yield per unit area. Under this study, eleven characters were analysed and significant differences were observed among genotypes for all the characters. The magnitudes of phenotypic coefficients of variation were slightly higher over genotypic values showing smaller effect of environment in the expression of all studied characters including seed yield. The highest magnitudes of PCV and GCV were observed for seed yield per plant followed by pods/ plant, harvest index, plant height, branches/ plant. High heritability coupled with high genetic advance as 5 per cent of mean were altogether at a glance and observed for the traits like plant height (98.5, 45.9), pods/ plant (94.9, 56.0), 100-seed weight (93.0, 27.2), seed yield/ plant (89.8, 54.4), number of branches/ plant (85.4, 40.7) and harvest index (88.3, 43.4) suggesting additive gene action in the expression of these characters, hence these characters may be proved as effective criteria for selection to improve the seed yield in mungbean. Genotypes exhibited higher seed yield along with other desirable traits were PM 1522, GM-6, IGKM 06-18-3 and GM-4. Besides quantitative traits, all these variety were also found early in flowering and maturity, which are considered as the most desirable characters for crop cultivation.

Genotypic variability, mungbean, phenotypic variability, seed yield.

The highest value of GCV and PCV observed for pods/ plant indicated a greater phenotypic and genotypic variability among the genotypes which suggested that response to selection would be very high for these constituent which ultimately leading to yield improvement in the mungbean crop. The characters such as plant height, pods/ plant, branches/ plant, harvest index and seed yield per plant recorded high genetic variability, high heritability in coincidence with high genetic advance as per cent mean specify the prevalence of additive gene action and selection may be effectual in next generations for these traits. Out of 38 genotypes PM 1522, GM-6, IGKM 06-18-3, GM-4, SKAU-M 365, JLM707-5, SML 668 and Pusa M 1872 were found higher in seed yield and for other characters based on mean performance. Hence, these genotypes would be used as parental origin for subsequent breeding programmes.

Anita, S.R. Kumhar, Anil Kumar and Gopi Krishan Gaur (2022). Estimation of Genetic Variability for Seed Yield and Yield Related Traits in Mungbean [Vigna radiata (L.) Wilczek]. Biological Forum – An International Journal, 14(2): 503-507.