Genetic analysis for seed yield and yield component traits in recombinant inbred lines (RIL) population of blackgram (Vigna mungo (L.) Hepper)

Abstract

An inter sub specific mapping population (RIL) was developed by crossing VBN(Bg)5 x Vigna mungo var. silvestris 22/10 by single seed decent method. The genetic variability parameters for ten yield and yield contributing traits were studied in a RIL population consisted of 193 lines. The high PCV and GCV was found for the traits viz., single plant yield, clusters per plant, pods per plant and branches per plant. High heritability was observed for all traits and ranged from 75.46 (pods per cluster) to 96.57 per cent (clusters per plant). High genetic advance as per cent of mean was observed for plant height, branches per plant, clusters per plant, pods per cluster, pods per plant, pod length, hundred seed weight and single plant yield. High heritability coupled with high genetic advance as per cent of mean was observed for plant height, branches per plant, clusters per plant, pods per cluster, pods per plant, pod length, hundred seed weight and single plant yield. Transgressive segregants were observed for all the traits. Five RILs viz., RIL 11, RIL12, RIL67, RIL73 and RIL168 showed superiority over cultivated variety viz.,VBN (Bg) 5 for all traits except branches per plant. The trait based classification of RILs for yield contributing traits and for biotic stress resistance could be used as a pre breeding material for the improvement of blackgram.