Assessment of the genetic diversity of groundnut (Arachis hypogaea L.) genotypes for kernel yield
The current study was conducted to determine the genetic diversity present among the popular varieties and advanced cultures of groundnut. Genotypic correlation between single plant yield with number of pegs/plant and number of pods/plant was significant and positive. High heritability along with high genetic advance as a percentage of mean was found for plant height, no. of branches/plant, no. of pegs/plant, no. of pods/plant, hundred kernel weight and pod yield/plant. The 46 genotypes were grouped into five clusters based on D2 analysis. The highest intra-cluster distance was recorded for cluster VI followed by clusters II, I, III and V. Maximum inter-cluster distance was observed between clusters IV and V followed by clusters II and V. Minimum inter-cluster distance was observed between clusters I and II. PCA was used to estimate the relative contribution of various traits to the total variability. Three components (PC1, PC2 and PC3) were found to have more than one eigenvalue and they accounted for 67.23 per cent of the variability of the genotypes used.
Keywords: Groundnut, Variability, Heritability, Correlation, D2 analysis, PCA.
Assessment of the genetic diversity of groundnut Arachis hypogaea L. genotypes for kernel yield. 2023. Electronic Journal of Plant Breeding, 14 3, 1167-1173. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4917
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