Genetic Diversity For Yield and its Components in Different Genotypes of the Blackgram {Vigna mungo (L.) Hepper}

Abstract

The experimental material consisting sixty genotypes of Blackgram [Vigna mungo (L.) Hepper]” were subjected to genetic divergence by using D2 statistic.The genotypesgrouped into eight clusters by D2 analysis. Cluster VI consisted maximum accessions (12) followed by cluster II(10), cluster I (8), cluster VIII (7), cluster III, IV,VII, (6) and cluster V consisted 5 genotypes. At intra cluster level, maximum values were recorded for cluster VIII (35.77) followed by cluster II (30.81), cluster VI (28.70), cluster I (18.62). The average inter cluster values were maximum between cluster III and VIII followed by cluster VII and VIII. Cluster VIII showed maximum genetic divergence with III (84.28), cluster IV (80.77) and cluster V (66.36) distances revealing considerable amount of genetic diversity among the genotypes. Therefore, the genotypes falling in these clusters appeared to be divergent and might have different geographical/genetic origin hence could be gainfully utilized in blackgram breeding improvement programme.