Population structure and diversity analysis of Indica and Japonica rice genotypes

Anirban Nath1, Disharee Nath1 and Tapash Dasgupta2
1 University of Calcutta, Institute of Agricultural Science, Department of Genetics and Plant Breeding, Kolkata 700019, India
2 Ramakrishna Mission Vivekananda University, School of Agriculture and Rural Development, Narendrapur, Kolkata 700103, India

Abstract

Nath, A., Nath, D. & Dasgupta, T. (2021). Population structure and diversity analysis of Indica and Japonica rice genotypes. Bulg. J. Agric. Sci., 27 (1), 120–127

Eighty one rice genotypes were studied using 30 SSR markers and data obtained were analyzed using STRUCTURE software which classified the population into two sub groups or subpopulations, designated as subpopulation 1 and 2. Subpopulation 1 mostly comprised of 60 germplasms majority of which are Indica in origin, whereas subpopulation 2 mostly comprised of tropical and temperate Japonica subspecies. Cluster analysis was performed using UPGMA and Dendrogram was constructed which consisted of 4 clusters comprising of Indica accessions in majority and 3 clusters of tropical and temperate Japonica subspecies, thereby suggesting large diversity in the population.

Keywords: AMOVA; Cluster analysis; Dendrogram; Indica; Japonica; Population structure

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