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Studies on Dividing Heterotic Groups in Indica Rice with SSR Molecular Markers

Luo Xiao-jin

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Abstract

The polymorphisms of 58 varieties in indica rice were analyzed by using SSR markers,and the genetic distance(GD) of them was assayed.By cluster analysis with UPGMA method,the tested varieties could be divided into three groups based on GD between them.The heterosis analysis showed that the inter-group heterosis was greater than the intra-group heterosis,which indicates the feasibility of dividing rice heterotic groups by using SSR markers.

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What this paper is about

The polymorphisms of 58 varieties in indica rice were analyzed by using SSR markers,and the genetic distance(GD) of them was assayed.By cluster analysis with UPGMA method,the tested varieties could be divided into three groups based on GD between them.The heterosis analysis showed that the inter-group heterosis was greater than the intra-group heterosis,which indicates the feasibility of dividing rice heterotic groups by using SSR markers.

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Available abstract

The polymorphisms of 58 varieties in indica rice were analyzed by using SSR markers,and the genetic distance(GD) of them was assayed.By cluster analysis with UPGMA method,the tested varieties could be divided into three groups based on GD between them.The heterosis analysis showed that the inter-group heterosis was greater than the intra-group heterosis,which indicates the feasibility of dividing rice heterotic groups by using SSR markers.

Key concepts: Heterosis, UPGMA, Heterotic string theory, Biology, Genetic distance, Horticulture, Genetics, Mathematics

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