Nutan A. Ramteke, J.P. Devmore*, P.B. Vanave, T.J. Bedse, M.P. Gawai and B.D. Waghmode
Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth
Regional Agricultural Research Station, Karjat – 410201, Dist. Raigad. M.S.
Email: jalinder443@gmail.com
Received-06.05.2023, Revised-15.05.2023, Accepted-27.05.2023
Abstract: Genetic divergence is an efficient tool for the selection of parents used in hybridization programme. In the present study, forty rice genotypes were raised at Regional Agricultural Research Station, Karjat during Kharif, 2020 to identify diverse genotypes. They were evaluated for fifteen yield and yield attributing characters using D2 analysis, to study the diversity pattern among the genotypes. Based on the analysis, the genotypes were grouped into 6 clusters. Maximum number of genotypes i.e. 33 and 11 were grouped under cluster I and II, respectively and while clusters III, IV, V, VI were solitary. Maximum inter cluster D2 value was observed between cluster IV and VI (D= 22.174 ) followed by cluster V and VI (D = 22.138), cluster II and V (D= 22.066), cluster II and III (D=21.455), cluster III and VI (D=19.528), cluster II and VI (D =17.256) and cluster I and VI (D = 17.217). The greater the distance between two clusters, the wider the genetic diversity among the genotypes of those clusters. The intra cluster distance was maximum in cluster II (D=9.890) followed by cluster I (D=8.839). The cluster III, IV, V and VI recorded no intra cluster distance being solitary.
Keywords: Cluster,Genetic divergence, Genotypes, Rice
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