Genetic diversity analysis by D2 clustering of fodder yield and its related traits in forage sorghumPantnagar Journal of Research, Volume - 18, Issue - 3 ( September-December, 2020)
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The present study was undertaken during the Kharif season of 2017, using 73 diverse indigenous genotypes of forage sorghum. The observations were recorded for 10 morphological and eight quality parameters to assess the genetic diversity. Analysis of variance revealed sufficient variability for all the traits under study. The Mahalanobis D2 analysis was carried out for estimation of divergence between genotypes and Tocher method was used for grouping of genotypes into different clusters. Genotypes were grouped into seven clusters. Cluster I had the maximum number of genotypes i.e., 45 followed by cluster II (15) and Cluster IV (9). Cluster III, V, VI, VII had only single genotype each. Inter cluster distance was observed maximum between cluster IV and cluster VII.b Cluster means for the traits under investigation showed that the genotypes in first cluster are high yielding, where genotypes IC 436522 and IC 436598 present in cluster VI and VII respectively are good for quality traits and can be further used for enhancement of yield and quality of forage sorghum.
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