1Department of Horticulture, MSSSoA-CUTM (Centurion University of Technology and Management), R. Sitapur-761 211, Odisha, India
Twenty one diverse genotypes of vegetable cluster bean collected from different geographical locations of India were evaluated under randomized block design (RBD) with 3 replications to find out the extent of genetic divergence through D2 and PCA (Principal component analysis) studies.
The experiment was carried out at Post Graduate Research Farm under the Department of Horticulture, Centurion University, Odisha during the summer season of 2024.
Collected germplasm were grouped into 6 non-overlapping clusters. Upon analysis, cluster I, III, V and VI each had 4 numbers of genotypes while cluster II and IV had 3 and 2 genotypes respectively. No monogenotypic cluster was found. Cluster I and VI had the largest inter-cluster distance, followed by cluster I and V. Cluster number VI exhibited highest mean values for most of the traits under study. So, all the genotypes which were categorized under cluster I, V and VI can effectively be utilized for hybridization purpose as there is a chance of getting maximum heterosis in the resultant hybrids. Among the traits, days to 50% flowering followed by green pod yield per plant contributed maximum towards the total divergence. From the PCA studies it is observed that first eigen root had maximum variation. First 3 PC axes collectively interpreted 96.99% variation.
Cluster bean, D2 analysis, Genetic divergence, Genotypes, Principal component analysis
