D2 Analysis in Sesame (Sesamum indicum L.)

Abstract

Sixty sesame genotypes including three checks, AKT-64, AKT-101 and PKV-NT-11 for eleven quantitative characters evaluated at three locations and two season during summer 2018-19 and kharif-19 to measure the phenotypic diversity present in germplasm for 
overall (over locations and seasons) using Mahalanobis D2 technique for the identification of genetically diverse and agronomically superior genotypes that may further used in the hybridization programme. The mean sum of squares due to genotype, environment and genotype x environment interaction found highly significant for all the characters under studied. Study showed that Clustering was not according to their origin. The Maximum intra cluster distance was found in cluster VIII (79.03). Utmost inter cluster distance was exhibited between cluster XI and XIII (487.08) followed by cluster XI and XII (349.69) and cluster XII and XIII (349.69) indicating the maximum divergence between the clusters. Cluster XIII having highest mean value for number of branches per plant, 1000 seed weight, oil content and seed yield per plant. Number of capsules per plant contributed maximum (28.14%) to the diversity.