Genetic diversity and population structure of the major peanut (Arachis hypogaea L.) cultivars grown in China by SSR markers.

ABSTRACT: One hundred and forty-six highly polymorphic simple sequence repeat (SSR) markers were used to assess the genetic diversity and population structure of 196 peanut (Arachis Hypogaea L.) cultivars which had been extensively planted in different regions in China. These SSR markers amplified 440 polymorphic bands with an average of 2.99, and the average gene diversity index was 0.11. Eighty-six rare alleles with a frequency of less than 1% were identified in these cultivars. The largest Fst or genetic distance was found between the cultivars that adapted to the south regions and those to the north regions in China. A neighbor-joining tree of cultivars adapted to different ecological regions was constructed based on pairwise Nei's genetic distances, which showed a significant difference between

SUBMITTER: Ren X 

PROVIDER: S-EPMC3919752 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature