Association and genetic diversity studies in groundnut (arachis hypogaea l.)

Abstract

Abstract : Genetic association ad diversity studies among twenty five diverged genotypes of groundnut were carried out for six characters. The correlation study revealed that the pods per plant, 100-pod weight and 100kernel weight positively and significantly correlated with pod yield per plant. Pods per showed a high positive direct affect on pod yield followed by 100 pod eight, indicated that selection for these characters would give gains in pod yield. By using of Mahalanobi's analysis, the twenty five genotypes fell in four clusters of different sizes. The genotypes chosen from the same eco- geographic region were found scattered in different clusters which indicate that genetic diversity and geographic distribution were not necessarily related. Maximum inter cluster divergence was observed between cluster I and III indicating that highly divergent types existed in these clusters.