Vol. 10, Issue 11 (2021)

Author(s):
PV Padmavathi, J Suvarna, M Vijaya Sai Reddy and B Sahadeva Reddy

Abstract:
Analysis of Variation through Augmented design revealed significant mean sum of squares for days to 50% flowering and seed yield per plant. The mean square due to checks vs varieties was significant for no. of primary branches, no. of clusters per plant, no. of seeds per pod and seed yield per plant indicating that the test entries were significantly different from checks for these characters. Genetic Divergence in 97 genotypes of guar germplasm was studied using Mahalanobis D² statistic and Principal component Analysis. On the basis of D² statistic eight clusters were obtained and cluster IV and VII are the most divergent. Principal component analysis (PCA) identified 5 Principal Components (PC’s) with eigen value more than one which contributed 78.84 per cent of cumulative variance. The Genotypes IC 116685 (29), IC 116712 (36) and IC 384766 (65) were more divergent from the both the methods D² statistic and Principal component Analysis and could be used as donors in hybridization programme for obtaining wide spectrum of variation.