Morphological and ISSR molecular markers reveal genetic diversity of wild hawthorns (Crataegus songorica K. Koch.) in Xinjiang, China

Journal of Integrative Agriculture

Shu-ying CHEN¹  Xue QIN²  Jia TIAN³  Lei WANG⁴  Peng LI⁴  Fang SHENG⁴  Shu-ping LUO⁴  Jiang LI⁵ 

[1] SHENG Fang;TIAN Jia;Academy of Forestry in Ili, Yining 835000, P.R.China;College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, P.R.China;Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, P.R.China;

关键词: phenotypic traits;    ISSR marker;    genetic diversity;    Crataegus songorica K. Koch.;    germplasm resources;    molecular marker;   

DOI  :  

来源: DOAJ

【 摘 要 】

The wild hawthorn species, Crataegus songorica K. Koch., is an important wild germplasm resource in Xinjiang, China that has been endangered in recent years. The genetic diversity of C. songorica K. Koch. germplasm in five populations from Daxigou, Xinjiang, China were evaluated based on phenotypic traits and ISSR molecular markers to provide basic information on resource protection, rational utilization and genetic improvement. The F-value for the phenotypic differentiation coefficient of the 33 traits measured ranged from 0.266 to 15.128, and mean value was 13.85%. The variation among populations was found to be lower than that within population. A total of 303 loci were detected within the five populations by 12 primers. Within 298 polymorphic loci, the polymorphism was 98.35%, showing a high genetic diversity in C. songorica K. Koch. The gene diversity within population, total population genetic diversity, genetic differentiation coefficient and gene flow were 0.2779, 0.3235, 0.1408, and 3.0511, respectively. Our results showed that C. songorica K. Koch. from Xinjiang has a high level of genetic diversity at both the phenotypic and molecular levels. Significant genetic differentiation existed within population and the differentiation trend showed a regional association. And in this study, in situ and ex situ conservation approaches were raised for wild hawthorn protection utilization.

【 授权许可】

Unknown