关键词: 花生')">花生, 地方品种, SSR, 遗传多样性

Abstract: 【Objective】 In order to assess the genetic diversity of peanut landraces from Hebei province and provide a theoretical basis for peanut breeding. 【Method】 Genetic diversity of 75 accessions of peanut landraces with different botanical types, collected from Hebei province, was evaluated by 20 SSR molecular markers. 【Result】 Sixty-five alleles were detected. The average number of alleles per locus was 3.25 with a range from 2 to 6. Total Shannon information index of per locus varied widely from 0.1680 (7G02) -1.3617 (PM15) with an average value of 0.5448; Total Nei’s genetic diversity index of Nei per locus varied widely from 0.3385 (7G02) -0.9013 (PM384) with an average value of 0.6458; The accessions of A. hypogaea showed higher genetic diversity than those of A. vulgaris and A. fastigiata. Cluster analysis with UPGMA showed that the materials tested could be divided into 2 groups: the first group was A. vulgaris and A. fastigiata group, the second was A. hypogaea group and the genetic relationship among these landraces was not in accord with their geographical origins. 【Conclusion】 The peanut landraces from Hebei province showed higher genetic diversity revealed by SSR markers.

Key words: peanut')">peanut, landrace, SSR, genetic diversity