Genetic divergence of selected genotypes in sunhemp (Crotalaria juncea L.)
Abstract
A total of 40 genotypes of sunhemp maintained at the Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore were studied during Rabi 2017 for genetic divergence. The D2 analysis showed that on 50 DAS maximum contribution to divergence was given by green matter yield followed by leaf breadth and number of nodules per plant. The genotypes were grouped into 10 diverse clusters with farthest being cluster 10 and cluster 9. Cluster 7 had highest intra cluster distance. On 65 DAS, the character that contributed highest to divergence was green matter yield followed by number of nodules per plant and number of pods per inflorescence. 11 different clusters were formed among the 40 genotypes based on critical D2 value. Inter cluster distance was high between cluster 11 and cluster 6. Cluster 11 had the highest intra cluster distance. Hence, Genotypes from these clusters can be used for hybridization purpose.
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