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Genetic Diversity of 32 Resistant Materials to Rice Blast Based on SSR Markers

Yunyue Wang

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Abstract

Twenty-four pairs of SSR markers were used to analyze genetic diversity of 32 resistant materials to rice blast.The result showed that 177 alleles were detected with the average of 7.375.The average of Nei's genetic diversity index(He) and the polymorphism information content(PIC) were 0.719 4 and 0.673 5.This indicated these resistant materials had a relative high level of genetic diversity,and the genetic diversity of indica rice was slightly higher than that of Japonica one,but had no significant difference.The average genetic similarity coefficient was 0.279 9,and the genetic relationship among local resistance varieties were closer than that of materials come from gene bank.Clustering analysis showed when the similarity coefficient was 0.34 the material were divided into Indica and Japonica groups.The genetic relationship was some related to their geographical origin.

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What this paper is about

Twenty-four pairs of SSR markers were used to analyze genetic diversity of 32 resistant materials to rice blast.The result showed that 177 alleles were detected with the average of 7.375.The average of Nei's genetic diversity index(He) and the polymorphism information content(PIC) were 0.719 4 and 0.673 5.This indicated these resistant materials had a relative high level of genetic diversity,and the genetic diversity of indica rice was slightly higher than that of Japonica one,but had no significant difference.The average genetic similarity coefficient was 0.279 9,and the genetic relationship among local resistance varieties were closer than that of materials come from gene bank.Clustering analysis showed when the similarity coefficient was 0.34 the material were divided into Indica and Japonica groups.The genetic relationship was some related to their geographical origin.

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Available abstract

Twenty-four pairs of SSR markers were used to analyze genetic diversity of 32 resistant materials to rice blast.The result showed that 177 alleles were detected with the average of 7.375.The average of Nei's genetic diversity index(He) and the polymorphism information content(PIC) were 0.719 4 and 0.673 5.This indicated these resistant materials had a relative high level of genetic diversity,and the genetic diversity of indica rice was slightly higher than that of Japonica one,but had no significant difference.The average genetic similarity coefficient was 0.279 9,and the genetic relationship among local resistance varieties were closer than that of materials come from gene bank.Clustering analysis showed when the similarity coefficient was 0.34 the material were divided into Indica and Japonica groups.The genetic relationship was some related to their geographical origin.

Key concepts: Genetic diversity, Genetic similarity, Allele, Japonica rice, Biology, Genetic distance, Similarity (geometry), Diversity index

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Genetic Diversity of 32 Resistant Materials to Rice Blast Based on SSR Markers — Research Paper | ScholarLens