Genetic variability analysis and characterization for MYMV resistance in mungbean

A set of twenty-five advanced breeding lines including five released varieties were evaluated for genetic variability, heritability, and genetic advance for yield and related traits. The total of ten traits were studied including resistance to mungbean yellow mosaic virus disease (MYMV). Seed yield per plant has shown a high phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) indicating greater scope for improvement of this trait. Plant height and 100 seed weight showed moderate PCV and GCV whereas days to 50 percent flowering, seed per pod, and pod length showed low PCV and GCV. High heritability estimates coupled with high genetic advance were observed for 100 seed weight and seed yield per plant revealing the presence of less environmental influence and prevalence of additive gene action which suggest that selection would be rewarding for these traits. Screening for MYMV disease under natural conditions showed seven genotypes were resistant and nine genotypes were moderately resistant. This study revealed that 65C was high-yielding and resistant to MYMV disease. Moreover, 59C(10) yielded more than 65C but it was moderately susceptible to MYMV so both of these genotypes can be improved for their respective flaws and can be incorporated in the future breeding pipelines for their further development as a variety.