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茶叶科学 ›› 2018, Vol. 38 ›› Issue (1): 43-57.doi: 10.13305/j.cnki.jts.2018.01.005

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基于SCoT标记的福建茶树品种(系)遗传多样性分析

林伟东1,2,4, 陈志丹2,3,4, 孙威江1,2,3,4,*, 杨如兴5   

  1. 1. 福建农林大学园艺学院,福建 福州 350002;
    2. 闽台特色作物病虫生态防控协同创新中心,福建 福州 350002;
    3. 福建农林大学安溪茶学院,福建 福州 350002;
    4. 福建省茶产业工程技术研究中心,福建 福州 350002;
    5 福建省农业科学院茶叶研究所,福建 福安 355015.
  • 收稿日期:2017-06-13 修回日期:2017-08-24 出版日期:2018-02-15 发布日期:2019-08-28
  • 通讯作者: *swj8103@126.com
  • 作者简介:林伟东,男,硕士研究生,主要从事茶树种质资源创新与利用方面的研究。
  • 基金资助:
    福建省科技重大专项专题项目(2015NZ0002-1)、福建省区域发展重大项目(2014N3014)、福建高校产学合作项目(2015N5008)、福建省中青年教师教育科研项目(JA15184)

Analysis of Genetic Diversity of Fujian Tea Varieties by SCoT Markers

LIN Weidong1,2,4, CHEN Zhidan2,3,4, SUN Weijiang1,2,3,4,*, YANG Ruxing5   

  1. 1. College of HorticuLture, Fujian AgricuLture and Forestry University, Fuzhou 350002, China;
    2. Fujian-Taiwan Joint Centre for Ecological Control of Crop Pest, Fuzhou 350002, China;
    3. Anxi College of Tea Science, Fujian AgricuLture and Forestry University, Fuzhou 350002, China;
    4. Fujian Tea Industry Engineering Technology Research Center, Fuzhou 350002, China;
    5. Tea Research Institute, Fujian Academy of AgricuLtural Sciences, Fu’an 355015, China
  • Received:2017-06-13 Revised:2017-08-24 Online:2018-02-15 Published:2019-08-28

摘要: 利用SCoT标记对福建茶树资源进行分析,构建适用于福建茶树资源SCoT-PCR扩增体系。从38条SCoT引物中筛选出的16条多态性引物,构建了55份茶树品种(系)的SCoT标记指纹图谱。对55份材料共扩增出219条条带,多态性条带为216条,平均每条引物扩增出13.8条,多态性比率PPB为93.15%,55份供试材料的遗传相似系数(Genetic similarity, GS)介于0.49~0.85,平均为0.67。SCoT标记分析55份供试材料共两个群体的观测等位基因数Na为1.93,有效等位基因数Ne为1.54,Nei基因多样性为0.32,香农指数Shannon为0.48,遗传分化Gst为0.067,基因流Nm为7.01。在遗传相似系数为0.64处,将55份茶树资源分成2大类。

关键词: 茶树, SCoT, 遗传多样性, 亲缘关系

Abstract: SCoT-PCR amplification system is constructed to analyze the tea resources in Fujian. Totally 16 polymorphic primers were screened from 38 SCoT primers to construct fingerprints of 55 tea cultivars (lines). A total of 219 bands were amplified from 55 materials, with 216 polymorphic bands. The average bands amplified by each primer and polymorphic ratio were 13.8 and 93.15%. The Genetic similarity (GS) of 55 tea resources ranged from 0.49 to 0.85, with an average of 0.67. The SCoT marker analysis showed that the observed number of alleles was 1.93 in these two tea groups. The effective number of alleles, Nei gene diversity, Shannon’s information index, genetic differentiation and the gene flow were 1.54, 0.32, 0.48, 0.067 and 7.01, respectively. When the genetic similarity coefficient was set to 0.64, the tea resources could be divided into two major categories.

Key words: tea[Camellia sinensis(L.) O. Kuntze], SCoT, genetic diversity, genetic relationship

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