Genetic Diversity Studies for Yield and Quality Traits in Rice Genotypes (Oryza sativa L.)

Genetic divergence was studied in 70 rice genotypes on the basis of yield and quality characteristics by utilizing Mahalanobis D2 statistics. Based on the genetic distance (D2 values), the rice genotypes were grouped into seven clusters. The pattern of distribution of genotypes into different cluste...

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Bibliographic Details
Published inEnvironment and ecology Vol. 35; no. 3B; p. 2171
Main Authors Nagavath, Suresh Kumar, Reddy, V Ram, Chandramohan, Y
Format Journal Article
LanguageEnglish
Published Kalyani MKK Publications 01.07.2017
Subjects
Clusters
Crop yield
Divergence
Flowering
Genetic distance
Genetic diversity
Genotypes
Hybridization
Oryza sativa
Rice
Weight
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Summary:Genetic divergence was studied in 70 rice genotypes on the basis of yield and quality characteristics by utilizing Mahalanobis D2 statistics. Based on the genetic distance (D2 values), the rice genotypes were grouped into seven clusters. The pattern of distribution of genotypes into different clusters was at random. The maximum inter cluster distance was observed between cluster V and VII (1949.04) followed by cluster II and VII (1619.25), cluster II and III (1458.41), cluster V and VI (1282.97) and cluster III and VII (1268.29), cluster IV and V (1064.78). The genotypes from these clusters can be utilized in hybridization program for improvement of rice. Among different traits, kernel length, kernel breadth, days to 50% flowering, L/B ratio, 1000-grain weight and number of filled grains per panicle had maximum contribution towards total divergence, may be used as selection parameters in segregating generations.
ISSN:0970-0420