Genetic divergence in hyacinth bean (Dolichos lablab).

A study conducted during 1994-95 to analyse the genetic diversity using Mahalanobis D 2 statistic was carried out in 28 genotypes of hyacinth bean (Dolichos lablab L.). These genotypes were grouped into 5 clusters, Cluster I had 22 genotypes. The analysis further indicated that the genotypes of common geographic origin or same location were grouped into different clusters which suggested a lack of relationship between genetic and geographic diversity, The average intercluster D 2 values indicated maximum statistical divergence between cluster II and V followed by I and V and I and IV, Cluster V recorded highest mean pod length, pod weight, seeds/pod and green pod yield/plant. The first 2 canonical vectors accountcd for 73,09% of total genetic variation.