Genetic parameters and path co-efficient analysis in M₄ generation of mungbean (Vigna radiata L. Wilczek)

The present study was conducted to formulate selection criteria in M₄ population of three mungbean cultivars namely, T 44, PDM 11 and PDM 54. Significant difference in all the progenies was observed for almost all the parameters except length of pods in PDM 11 and 100-seed weight in PDM 54. Genetic parameters (genotypic and phenotypic variance, heritability and genetic advance), genotypic and phenotypic correlation and path co-efficient were computed. The results revealed high heritability coupled with moderate to high genetic advance for seed yield/ plant (96.30, 48.63), number of seeds per pod (93.90, 20.76), pods per plant (92.40, 35.56) and plant height (97.20, 22.04). This indicated that these characters are controlled by additive genetic variance and selection would be effective. Seed yield had significantly positive correlation with almost all the yield attributing characters in almost all the three cultivars. Hence, these characters can be appropriately used as selection criteria for improving seed yield in these mutants for the improvement in mungbean.