GENETIC DIVERSITY STUDIES FOR YIELD, ITS COMPONENTS AND QUALITY TRAITS IN BLACKGRAM (Vigna mungo (L). Hepper)
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Authors
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D. BHARATHI*, K. HARIPRASAD REDDY, D. MOHAN REDDY, P. LATA and B. RAVINDRA REDDY
Department of Genetics and Plant Breeding, S.V.Agricultural College, Acharya N.G. Ranga Agricultural University, Tirupati- 517 502
Abstract
A total of 89 blackgram accessions were subjected to D2 analysis to assess the diversity for 18 quantitative
traits. The genotypes were grouped into 14 clusters. Cluster IV consisted of maximum number of accessions (26)
followed by cluster I (23), III (16) ,II (10) and cluster X (5).The clusters viz., V, VI, VII, VIII, IX, XI, XII, XIII and XIV consisted
only one accession each. The inter-cluster distances were greater than intracluster distances, revealing that
considerable amount of genetic diversity existed among the accessions. Maximum inter cluster distance was
observed between cluster IX and X (815.75) followed by clusters III and X (752.52), cluster II and X (746.95) and
cluster X and XII (654.83). Genotypes belonging to these diversified clusters could be utilized in the hybridization
programme to get desirable recombinants segregating generations. Among all the characters, methionine content
contributed maximum (32.33%) towards the in divergence followed by lysine content (27.20%) and tryptophan
content (16.32%
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