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园艺学报 ›› 2025, Vol. 52 ›› Issue (6): 1539-1552.doi: 10.16420/j.issn.0513-353x.2024-0433

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

基于SSR标记的蔷薇属种质资源遗传多样性分析及指纹图谱构建

孙佩1,2,3(), 张宏1,2,3, 杨媛1,2,4, 王华1,2,3, 李茂福1,2,3, 康岩慧1,2,3, 孙向一1,2,3, 金万梅1,2,3,*   

  1. 1 北京市农林科学院林业果树研究所,北京 100093
    2 农业农村部华北地区园艺作物生物学与种质创制重点实验室,北京 100093
    3 北京市功能花卉工程技术研究中心,北京 100093
    4 北京市落叶果树工程技术研究中心,北京 100093
  • 收稿日期:2024-12-19 修回日期:2025-02-28 出版日期:2025-06-20 发布日期:2025-06-20
  • 通讯作者:
    *E-mail:
  • 基金资助:
    北京市农林科学院科技创新能力专项(KJCX20230110); 北京市农林科学院科技创新能力专项(KJCX20230602); 北京市农林科学院林业果树研究所青年基金项目(LGSJJ202404)

Genetic Diversity Analysis and Fingerprint Construction of Rosa Germplasm Resources Based on SSR Marker

SUN Pei1,2,3(), ZHANG Hong1,2,3, YANG Yuan1,2,4, WANG Hua1,2,3, LI Maofu1,2,3, KANG Yanhui1,2,3, SUN Xiangyi1,2,3, JIN Wanmei1,2,3,*   

  1. 1 Institute of Forestry and Pomology,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100093,China
    2 Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(North China),Ministry of Agriculture and Rural Affairs,Beijing 100093,China
    3 Beijing Engineering Research Center of Functional Floriculture,Beijing 100093,China
    4 Beijing Engineering Research Center for Deciduous Fruit Trees,Beijing 100093,China
  • Received:2024-12-19 Revised:2025-02-28 Published:2025-06-20 Online:2025-06-20

摘要:

利用15对SSR标记对80份蔷薇属种质资源进行DNA水平遗传多样性分析,用3对核心引物构建了指纹图谱,同时检测了部分种质资源的倍性。研究结果表明,15对SSR共扩增出425个等位基因,每对引物平均28.33个,等位基因(Na)范围为7 ~ 64个,平均等位基因位点数为28个,平均多态性信息含量(PIC)和区分系数(PD)分别为83.52%和84.84%,表明参试种质资源遗传多样性丰富。80份参试种质资源的遗传相似系数变化范围为0.27 ~ 0.67,非加权配对算术平均法(UPGMA)聚类分析表明,在遗传相似度为0.28时,可将参试种质资源划分为蔷薇、玫瑰及月季三大类;在相似度为0.30时,可划分为中国古老月季和现代月季2个亚分支。筛选出的3对核心引物可用于构建参试种质资源指纹图谱。倍性分析表明参试种质资源倍性与扩增片段数量有一定相关性,且扩增片段数量可一定程度辅助倍性检测。

关键词: 蔷薇属, SSR, 遗传多样性, 聚类分析, 指纹图谱, 倍性检测

Abstract:

15 SSR markers were adopted to analyze the genetic diversity and 3 core SSR markers established fingerprint of 80 rose germplasm resources. The ploidy level of some germplasm resources were also detected. The results showed that a total of 425 alleles were amplified by 15 SSR markers,with an average of 28.33 alleles per pair of primers and the number of alleles range from 7-64. The average number Polymorphic information content(PIC)was 83.52%,and the average power of discrimination(PD)was 84.84%. These parameters manifested that the tested resources got great genetic diversity. The similarity coefficient ranged from 0.27 to 0.67 among the 80 germplasm resources. Unweighted pair-group method with arithmetic means(UPGMA)analysis clustered all germplasm resources into three group at the similarity coefficient 0.28,and further divided the rose into two subgroups as Rosa hybrida and Chinese old rose when the similarity coefficient was 0.30. Three pairs of core SSR markers were selected to construct fingerprint. A certain correlation between the ploidy level and the number of amplified fragments for germplasm resources was identified,which means the number of amplified fragments could assist ploidy detection to some extent.

Key words: Rosa, SSR, genetic diversity, cluster analysis, fingerprint, ploidy test