生物技术通报 ›› 2024, Vol. 40 ›› Issue (9): 131-140.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0113

• 薯类作物生物技术专题(专题主编:徐建飞,尚轶) • 上一篇    下一篇

基于SSR荧光标记毛细管电泳的马铃薯品种遗传多样性分析及分子身份证构建

毛向红(), 卢瑶, 范向斌, 杜培兵, 白小东()   

  1. 山西农业大学高寒区作物研究所 马铃薯遗传改良与种质创新山西省重点实验室,大同 037008
  • 收稿日期:2024-01-31 出版日期:2024-09-26 发布日期:2024-10-12
  • 通讯作者: 白小东,男,研究方向:马铃薯育种与栽培技术;E-mail:bxd5561@126.com
  • 作者简介:毛向红,女,研究方向:马铃薯遗传育种;E-mail:155347505@qq.com
  • 基金资助:
    国家马铃薯产业技术体系(CARS-09-ES02);山西省重点研发计划项目(202102140601004);山西农业大学生物育种工程(YZGC082);山西省现代农业产业技术体系建设专项资金资助(2024CYJSTX06)

Genetic Diversity Analysis of Potato Varieties Based on SSR Fluorescent Marker Capillary Electrophoresis and Construction of Molecular Identity Card

MAO Xiang-hong(), LU Yao, FAN Xiang-bin, DU Pei-bing, BAI Xiao-dong()   

  1. Shanxi Agricultural University, High Latitude Crops Institute to Shanxi Academy, Shanxi Provincial Key Laboratory of Potato Genetic Improvement and Germplasm Innovation, Datong 037008
  • Received:2024-01-31 Published:2024-09-26 Online:2024-10-12

摘要:

【目的】对引进的马铃薯品种进行遗传多样性分析和评价。【方法】使用SSR荧光标记毛细管电泳法分析51份引进的马铃薯品种的遗传多样性,并构建分子身份证。【结果】41对引物共扩增出327个等位位点,311个等位位点在相同位置存在差异性,多态性比例是95.11%;引物多态性信息指数(PIC)在0-0.89之间,平均为0.71;Shannon's(I)在0-0.54之间,平均为0.32。在遗传相似系数GS为0.76时,将供试材料分为6大类,第I类包括14个品种;第II类包括30个品种,第III类包括3个品种,第V类包括2个品种;第IV类和第VI类各包含1个品种。聚类分析发现维拉斯、定薯4号、克新33号和东农312这4个品种可作为马铃薯育种材料。【结论】筛选到3对核心引物STM0037、SSR0387、SSR01054可用于构建51个马铃薯品种的指纹图谱和分子身份证。

关键词: 马铃薯, SSR, 毛细管电泳, 遗传多样性, 分子身份证

Abstract:

【Objective】 Genetic diversity analysis and evaluation of introduced potato varieties is a necessary method for screening good parental materials. 【Method】SSR fluorescent marker capillary electrophoresis was used to analyze the genetic diversity of 51 introduced potato varieties and construct molecular ID cards. 【Result】The 41 pairs of primers amplified a total of 327 alleles, and 311 alleles were differentiated at the same position, and the percentage of polymorphism was 95.11%. The primer polymorphism information index(PIC)ranged from 0 to 0.89, with an average of 0.71. Shannon's(I)ranged from 0 to 0.54, with an average of 0.32. The genetic similarity coefficient(GS)of the introduced potato varieties was 0.32. In the genetic similarity coefficient GS of 0.76, the test materials were categorized into six major groups: Group I having 14 varieties, group II having 30 varieties, group III having three varieties, group V having two varieties, and group IV and VI having one variety each. Cluster analysis revealed that four varieties, Vilas, Dingshu 4, Kexin 33 and Dongnong 312 could be used as potato breeding materials. 【Conclusion】Three pairs of core primers, STM0037, SSR0387 and SSR01054, were selected to construct fingerprints and molecular IDs of 51 potato varieties.

Key words: potato, SSR, capillary electrophoresis, genetic diversity, molecular identity card