Genetic diversity and relationships of common apricot (Prunus armeniaca L.) in China based on simple sequence repeat (SSR) markers

详细信息    查看全文

• 作者：Qiu-Ping Zhang (1)
  Dong-Cheng Liu (2)
  Shuo Liu (1)
  Ning Liu (1)
  Xiao Wei (1)
  Ai-Min Zhang (2)
  Wei-Sheng Liu (1)
  
• 关键词：Evolution relationships ; Genetic diversity ; Geographical groups ; Prunus armeniaca L. ; Simple sequence repeats (SSRs)
• 刊名：Genetic Resources and Crop Evolution
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：61
• 期：2
• 页码：357-368
• 全文大小：482 KB
• 作者单位：Qiu-Ping Zhang (1)
  Dong-Cheng Liu (2)
  Shuo Liu (1)
  Ning Liu (1)
  Xiao Wei (1)
  Ai-Min Zhang (2)
  Wei-Sheng Liu (1)
  
  1. Liaoning Institute of Pomology, Yingkou, 115009, Liaoning, China
  2. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
  
• ISSN：1573-5109

文摘

The common apricot (Prunus armeniaca L.) is adaptable to the diverse geographical areas throughout northern China where the original center for common apricot is worldwide. The diversity of 94 apricot samples, including 66 typical Chinese local cultivars, four kernel-using apricots, thirteen cultivars of Xinjiang (belong to Central Asian groups), ten exotic cultivars and one black apricot (Prunus dasycarpa Ehrh.) accession, were investigated using 21 simple sequence repeat markers. Totally, 662 genotypes were identified in the set of tested 93 common apricot cultivars, with an average of 31.52 genotypes per locus. The allele diversity per locus, with an average allele number of 15.14, and the heterozygosity rates, with an average expected heterozygosity value for the sample set of 0.792, were found to be higher than those in previous studies, implying that Chinese apricot germplasms presented a high level of genetic diversity. The clustering analysis and principal coordinate analysis outlined the genetic relationships of apricot cultivars tested from different geographical distributions. The results supported the traditional classification of apricot germplasm based on the ecological types, and showed that the richest diversity existed in the northern China and northwestern China local cultivars among common apricot germplasm resources tested. This study will facilitate the understanding of the evolution relationships and the conservation strategies of the genetic diversity in apricot in China.