Assessment of yield and yield related traits in recombinant inbred lines of groundnut (arachis hypogaea l.) using principal component and cluster analysis

Abstract

In the current set of an experiment sixty-nine Recombinant Inbred Lines (F8 generation) obtained from a cross between genotypes ICG 4747 and TMV2NLM along with two parents and five elite cultivars were evaluated over three seasons by using principal component and cluster analysis. Analysis of variance revealed significant differences among genotypes for all the traits under study. The highest GCV and PCV were observed for pod yield per plant (PY) and harvest index (HI). Significant positive correlation was observed between pod yield per plant (PY) with biological yield per plant (BY), harvest index (HI), kernel yield per plant (KY), 100-kernel mass (HKM), sound mature kernel (SMK) and specific leaf area (SLA). Principal component analysis indicated that four important components accounted for about 73.2% of the total variation among traits in groundnut cultivars. The traits like pod yield per plant (PY), harvest index (HI), kernel yield per plant (KY), 100-kernel mass (HKM), and sound mature kernel (SMK) showed considerable positive loadings on PC1. On the other hand PC2 was corresponding diversity due to shelling out tern (SOT), root diameter (RD), 100-kernel mass (HKM) and kernel yield per plant (KY) with their considerable positive loadings.