Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (31): 60-65.doi: 10.11924/j.issn.1000-6850.casb2021-1199

Special Issue: 生物技术 资源与环境 园艺

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Genetic Diversity and Genetic Relationship Analysis of Longan Germplasm Resources Based on ISSR Markers

LIU Xiaoying(), WU Bijun, ZHANG Younan, HUANG Feilong, LIU Guoqiang()   

  1. Putian Institute of Agricultural Sciences, Putian, Fujian 351100
  • Received:2021-12-14 Revised:2022-07-26 Online:2022-11-05 Published:2022-10-27
  • Contact: LIU Guoqiang E-mail:396571502@qq.com;liugq66@163.com

Abstract:

In order to clarify the genetic diversity level and genetic relationship of the collected longan germplasm resources, ISSR molecular markers were used to analyze the genetic characterization of 20 longan germplasm resources. The results showed that 113 DNA fragments were amplified from 11 ISSR primers, of which 90 fragments (79.65%) were polymorphic. The genetic similarity coefficient ranged from 0.5487 to 0.8673, and the average value was 0.7758. The ISSR clustering results of the 20 longan germplasm resources showed that the genetic relationship of the tested longan materials was close. The clustering results were affected by the parental relationship and the geographical distribution to a certain extent, which was more consistent with the traditional classification methods. The results provided theoretical and technical support for the classification, conservation and utilization, genetic evolution research and hybrid combination selection of the longan resources.

Key words: longan, inter-simple sequence repeat, molecular marker, genetic diversity, genetic relationship

CLC Number: