MORPHOMETRIC DIVERSITY AND GENETIC DISPOSTION EVALUATION OF SOME GREEN GRAM (Vigna radiata) VARIETIES

Abstract

Diversity study on the variability level of nutritional and anti-nutritional contents acrossavailable accessions could also be a key factor to the selection of superior genotypes forbreeding program. This study identified morphological variability in twenty accessions of Vignaradiata through the multivariate- Principal Component Analysis PCA, Cluster analysis andcorrelation between yield and yield-related parameters. Evaluation of nutritional and anti-nutritional contents through the analysis of protein and Lectin were also adopted for thevariability study. According to the principal component analysis, four principal components hadEigenvalues greater than 1, and accounted for 77% of the total variations using 13 variables.Amongst the first four Principal components, PC1 contributed a high proportion of the totalvariation (37.2%), while others contributed 13.83%, 8.22%, and 7.81% respectively.Hierarchical clustering method separated twenty accessions into three clusters containing six,five and nine accessions respectively. The total protein and hemagglutinating ability of Mungbean extracts from both seeds and leaves investigated revealed low Lectin in leaves and zerolevel of Lectin in the dried seeds. The result showed that accessions such as TVr56, TVr53,TVr43, and TVr59 should be selected during the breeding programme for Mung bean due totheir high protein, low leave Lectin and zero seed Lectin. More importantly, geneticcompatibility study between the evaluated and other improved cultivars from other countriesshould be encouraged.