Title: Genetic diversity of peanut mini core collection detected by SSR markers.
Abstract: A set of mini core collection comprised of 298 accessions was employed for SSR analysis.Twenty six polymorphic SSR markers were screened from a total of 206 primer pairs.The similarity coefficients between genotype pairs among the 298 accessions were 0.51 to 0.99.The genetic difference between the genotypes of zhh1497 and zhh1398 was the highest with similarity coefficient of 0.51 among these accessions.Three special SSR markers in botanical types were detected including 1 marker (2A06/440) in the type of hypogaea,1(2A06/440) in hirsuta,1 (PM443/270) in vulgaris and 2 (PM443/270,9E08/500) in fastigiata.Molecular polymorphism detected by SSR indicated that genetic diversity index were the highest in accessions of fastigiata,followed by hypogaea,vulgaris,hirsuta and then by the intermediate type.Among the Chinese mini core collection,both polymorphic information content and genetic diversity index were higher in introduced foreign accessions than the corresponding traits in the native accessions.In terms of Chinese native resource,the polymorphic information content and genetic diversity index were higher in accessions from Yangtze River valley and region of southern China than the corresponding traits in accessions from other regions of China.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 5
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