Nutritional diversity of Indian lablab bean (Lablab purpureus (L.) Sweet): An approach towards biofortification

•In the present study, fifty-four accessions of lablab bean were analyzed for protein, phenol, vitamin C, micronutrients and minerals.•Almost all the traits had shown presence of significant variability for studied nutrient traits in lablab bean accessions.•The significant correlation of zinc with copper and potassium with manganese indicated their association in tight linkage.•Principal component analysis explained 71.94% of total variability from first 5 PCs of evaluated genotypes.•The accessions IIHR b DB 52 and IIHR b DB 56 were evaluated as most potential accessions to be utilized in future lablab bean improvement program for biofortification.