Genetic divergence analysis in groundnut (Arachis hypogaea L.)

  • K. Saritha Acharya N G Ranga Agricultural University
  • R. P. Vasanthi Acharya N G Ranga Agricultural University
  • M. Shanthi Priya Acharya N G Ranga Agricultural University
  • P. Latha Acharya N G Ranga Agricultural University

Abstract

Genetic diversity among 32 genotypes of groundnut was estimated for six characters using Mahalanobis D2 statistic. The analysis of variance revealed significant differences among the genotypes for all characters. The characters, pod yield per plant, 100 seed weight and SLA at 60 DAS recorded moderate to high GCV, high heritability coupled with high genetic advance as percent of mean indicating that these traits were mainly under the influence of additive gene action and simple selection may be effective for improvement of these traits. Based on Tocher's method of clustering, 32 genotypes were grouped into eight clusters, of which cluster II was the largest containing 10 genotypes followed by cluster I with seven genotypes. The inter-cluster distance was maximum between cluster II and cluster VIII (2031.75) followed by cluster V and cluster VIII (1768.25) and cluster VII and VIII (1702.17). Considering the cluster distances and cluster means, crossing between the genotypes of cluster II and cluster VIII, and  cluster VIII and cluster V is suggested in order to get transgressivesegregants for yield and yield parameters.

Author Biographies

K. Saritha, Acharya N G Ranga Agricultural University

Department of genetics and plant breeding

R. P. Vasanthi, Acharya N G Ranga Agricultural University

Principl Scientist

Department of genetics and plant breeding

M. Shanthi Priya, Acharya N G Ranga Agricultural University

Associate Professor

Department of genetics and plant breeding

 

P. Latha, Acharya N G Ranga Agricultural University

Senior Scientist

Department of crop physiology

Published
31-12-2018
Section
Research Article