Induced genetic variability and divergence in M, generation in mungbean
DOI:
https://doi.org/10.53550/jfl.v19i1.2274Keywords:
D' analysis, Divergence, Genetic variability, Induced mutations, Mungbean, Vigna radiataAbstract
Genetic variability and divergence for nine economically important metric traits in 140 variant lines in M, generation and base genotype (PDM 84-139) of mungbean were studied in the present study. Leaf area, plant height, number of pods/ plant and grain yield/plant showed high heritability coupled with high genetic advance. Other characters showed medium heritability and low to medium genetic advance. On the basis of D2 values, variants (mutants) could be grouped into eight clusters, indicating that induced mutations are effective in creating genetic divergence. Maximum number of variants was recorded in cluster I (26) and minimum in cluster IV (2). Cluster VIII having maximum intra- and inter-cluster divergence had high mean values for leaf area, number of primary branches/ plant, plant height, number of pod clusters/plant, number of pods/plant, pod length, number of seeds/pod, test weight and grain yield/plant. On the contrary, cluster I had minimum mean values for all the characters under study. The parental genotype (PDM 84-139) was accommodated in cluster VIII. The other clusters had low to medium mean values of the characters. This fact indicates the distinctness of the eight clusters, as the cluster showing high mean values of the characters had high performing variants (i.e. cluster VIII-V70, V78, V129) and vice-versa
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