1. Department of Horticulture, Dr. Y.S.R. Horticultural University, Tadepalligudem, West Godavari- 534101, A.P., India
2. Department of Olericulture, Kerala Agricultural University, College of Agriculture, Vellayani-695522, Trivandrum, Kerala, India
Legume Genomics and Genetics, 2014, Vol. 5, No. 1 doi: 10.5376/lgg.2014.05.0001
Received: 12 Jan., 2014 Accepted: 13 Mar., 2014 Published: 14 Jun., 2014
This is an open access article published under the terms of the Creative Commons Attribution License
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Forty four genotypes of yard long bean (Vigna unguiculata subsp. sesquipedalis (L.) Verd.) were investigated to understand the extent of genetic diversity through twelve quantitative traits. Mahalanobis’s D2 analysis established the presence of wide genetic diversity among these genotypes by the formation of 3 clusters. Cluster I had the maximum number of genotypes i.e 34 and cluster III had only four genotypes. Intra cluster distance analysis revealed that the minimum intra cluster distance was observed in the cluster I. The inter-cluster distance (D) was found to be the maximum between the clusters II and III and the same was minimum between clusters I and II. The results indicated that 100 seed weight contributed maximum to the total divergence followed by pod yield per plant. Intercrossing among the genotypes belonging to cluster II, V and IV was suggested to develop high yielding varieties with other desirable characters or may be used as potential donors for future hybridization programme to develop superior yard long bean variety with good consumer preference and high pod yield.