Genetic Diversity Analysis in Blackgram Genotypes

Abstract

An investigation was carried out during kharif 2018 by employing 35 genotypes of blackgram including two checks (i.e., Pratap Urd-1 and Pant Urd-31) for the assessment of genetic diversity using D2 statistics. Results revealed that all the genotypes were grouped into five clusters among them, cluster V was largest had maximum number of genotypes (17) followed by cluster I, cluster IV, cluster II and cluster III were comprising 5, 5, 4 and 4 genotypes respectively. Inter cluster distances were found greater than intra cluster distances. Highest inter cluster distance was observed between cluster I and cluster IV indicate that maximum genetic divergence was exists among genotypes of these cluster, while least between cluster III and cluster V. The cluster III had maximum intra cluster distance followed by cluster IV whereas cluster I had minimum. The relative contribution of traits towards genetic divergence found highest for number of seeds per pod followed by 100-seed weight. For most of the traits, maximum cluster mean was showed by cluster III.