Population Structure and Genetic Diversity in Popular Rice Varieties of India as Evidenced from SSR Analysis

Upadhyaya, P. and Neeraja, C.N. and Kole, C. and Singh, V.K. (2012) Population Structure and Genetic Diversity in Popular Rice Varieties of India as Evidenced from SSR Analysis. Biochemical Genetics, 50 (9-10). pp. 770-783.

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Abstract

We report here on the phylogenetic analysis, population substructure, and identification of molecular tags of 25 popular rice varieties and four landraces from different ecological belts of India employing a set of 52 simple sequence repeat (SSR) markers. Genetic analysis using the SSR markers categorized the genotypes into two major clusters, distributed according to their pedigree. Population structure analysis suggested that the optimum number of subpopulations was three (K = 3) in the popular varieties and landraces. At K = 5 the allelic distribution was much more similar to the phylogenetic dendrogram. The molecular diversity and population structure analysis indicated that there is not much variation among the popular rice cultivars of India. The study has identified SSR markers producing unique alleles, which should aid in the precise identification, maintenance, and genetic purity analysis of rice varieties.

Item Type: Article
Uncontrolled Keywords: Rice, Population structure, SSR, Molecular tags, Genetic diversity
Author Affiliation: Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, India
Subjects: Crop Improvement > Genetics/Genomics
Divisions: General
Depositing User: Mr Siva Shankar
Date Deposited: 29 Oct 2012 08:14
Last Modified: 29 Oct 2012 08:14
Official URL: http://dx.doi.org/10.1007/s10528-012-9519-z
URI: http://eprints.icrisat.ac.in/id/eprint/8564

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