Diversity Assessment of Winged Bean [Psophocarpus tetragonolobus (L.) DC.] Accessions from IITA Genebank

The capability of winged bean to support food and nutrition security in sub-Saharan Africa is recurrently being affected by several constraints, which include a lack genetic improvement. dearth adequate information on the level available diversity germplasm has been major setback planning appropriate improvement programs. Fifteen accessions were assessed for using 10 quantitative traits simple sequence repeat (SSR) markers. laid out RCBD with three replicates two growing seasons. Leaf samples obtained from plants representing each accession SSR marker genotyping. exhibited significant (p < 0.05) differences measured traits. Broad-sense heritability estimates varied 10.31% days first plant maturity 72.67% pod weight. Pod weight had positive correlations length (0.53, p 0.05), width (0.70, 0.01), number seeds per (0.64, 0.01). However, was negatively correlated (−0.71, Number positively predicted weight, seed thickness, maturity. Cluster analysis delineated into distinct groups. Average alleles 4.2, gene 0.25, polymorphic content 0.22 recorded. Analysis molecular variance revealed intra-accession variation 95% as compared inter-accession 5%. Two primary groups identified only accessions, namely TPt-6, TPt-126, TPt-48, showed purity. results this study provide basis exploiting existing