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园艺学报 ›› 2023, Vol. 50 ›› Issue (2): 307-318.doi: 10.16420/j.issn.0513-353x.2021-1046

• 研究论文 • 上一篇    下一篇

菜薹KASP-SNP指纹图谱构建及品种鉴定

任海龙, 许东林*(), 张晶*(), 邹集文, 李光光, 周贤玉, 肖婉钰, 孙艺嘉   

  1. 广州市农业科学研究院,广州 510308
  • 收稿日期:2022-09-14 修回日期:2022-12-10 出版日期:2023-02-25 发布日期:2023-03-06
  • 通讯作者: *(E-mail:feices@qq.com24970989@qq.com
  • 基金资助:
    广州市科技计划项目(202002030096);广州市科技计划项目(202002020007);广州市科技计划项目(202102080117);广州市科技计划项目(202102080281);广州市支农资金项目(穗农办[2021]12号);广州市级财政补助资金农业农村项目(20101289);广州市级财政补助资金农业农村项目(21102312)

Establishment of SNP Fingerprinting and Identification of Chinese Flowering Cabbage Varieties Based on KASP Genotyping

REN Hailong, XU Donglin*(), ZHANG Jing*(), ZOU Jiwen, LI Guangguang, ZHOU Xianyu, XIAO Wanyu, SUN Yijia   

  1. Guangzhou Academy of Agricultural Sciences,Guangzhou 510308,China
  • Received:2022-09-14 Revised:2022-12-10 Online:2023-02-25 Published:2023-03-06
  • Contact: *(E-mail:feices@qq.com24970989@qq.com

摘要:

利用前人已开发的200个芸薹种KASP-SNP分子标记对89份菜薹品种进行基因分型,共有131个标记分型成功,转化率为65.50%,缺失率为0.06,次要等位基因频率(MAF)为0.21,观测杂合度为 0.21,多态性信息含量(PIC)为0.27,并将这些标记用于系统进化树构建及群体结构分析。进一步基于次要等位基因频率大于0.25,多态性信息含量大于0.35,缺失率小于0.03,杂合率小于0.6等参数,筛选出18个核心KASP-SNP分子标记,并构建了89份菜薹品种的SNP指纹图谱,证明了KASP技术在菜薹品种鉴定中的可行性。

关键词: 菜薹, KASP, 指纹图谱, 品种鉴定

Abstract:

In this study,200 KASP-SNP markers previously developed from Brassica rapa were estimated using 89 Chinese flowering cabbage varieties. The results showed that 131 of tested markers were successful in the genotyping,with conversion rate 65.50%,deletion rate 0.06,minor allele frequency(MAF)0.21,observed heterozygosity 0.27 and polymorphism information content(PIC)0.21. These markers were used for phylogenetic tree construction and genetic structure analysis. Further,they were screened based on the criteria-minor allele frequency > 0.25,polymorphism information content > 0.35,deletion rate < 0.03,and heterozygosity rate < 0.6 and 18 of them were selected as core KASP-SNP markers. Using these 18 markers,a fingerprinting for the 89 Chinese flowering cabbage varieties was constructed,demonstrating the feasibility of KASP technique in identification of Chinese flowering cabbage varieties.

Key words: Chinese flowering cabbage, KASP, fingerprinting, variety identification

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