河南农业科学 ›› 2022, Vol. 51 ›› Issue (7): 61-74.DOI: 10.15933/j.cnki.1004-3268.2022.07.007

• 作物栽培·遗传育种 • 上一篇    下一篇

黄淮产区地黄种质遗传多样性分析及SSR指纹图谱构建

李春鑫1,2,张永战1,陈国参1,杨铁钢2,张英涛1,李春3,董诚明4   

  1. (1.河南省科学院生物研究所有限责任公司,河南 郑州 450008;2.河南省农业科学院经济作物研究所,河南 郑州 450002;3.河南省农业科学院芝麻研究中心,河南 郑州 450002;4.河南中医药大学药学院,河南 郑州 450046)
  • 收稿日期:2021-12-08 出版日期:2022-07-15 发布日期:2022-09-09
  • 通讯作者: 董诚明(1963-),男,内蒙古四王子旗人,教授,主要从事药用植物学、中药资源学研究。E-mail:dcm663@sina.com
  • 作者简介:李春鑫(1982-),男,河南安阳人,助理研究员,博士,主要从事中药材种质资源研究。E-mail:licx2006@163.com
  • 基金资助:
    河南省科学院科研开发专项(210205027)

Genetic Diversity Analysis and SSR Fingerprint Construction of Germplasms of Rehmannia glutinosa in Huang‑Huai Region

LI Chunxin1,2,ZHANG Yongzhan1,CHEN Guocan1,YANG Tiegang2,ZHANG Yingtao1,LI Chun3,DONG Chengming4   

  1. (1.Institute of Biology Corporation Limited,Henan Academy of Sciences,Zhengzhou 450008,China;2.Industrial Crops Research Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;3.Sesame Research Center,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;4.School of Pharmacy,Henan University of Chinese Medicine,Zhengzhou 450046,China)
  • Received:2021-12-08 Published:2022-07-15 Online:2022-09-09

摘要: 为明确我国黄淮产区地黄种质间遗传多样性,解析种质间的亲缘关系,为该区地黄品种选育和种质鉴定提供依据,利用毛细管电泳技术和108对SSR引物对地黄种质进行分析,以获取种质间遗传相似系数、多态性引物、种质分辨率,利用软件TASSEL 3.0和Fig Tree(V 1.4.3)进行聚类分析和作图,选取多态性好、稳定性强的引物构建地黄种质的SSR指纹图谱。结果表明,共获得多态性引物50对,其片段长度在107~365 bp,种质间遗传相似系数在0.552~0.984,平均为0.729,野生种质的平均遗传相似系数明显低于地方品种和当前主栽品种。聚类结果显示,17个地黄种质分为3个亚群。选取并利用多态性强和分辨率高、扩增稳定的15对引物构建了地黄种质的SSR指纹图谱,实现了对每个地黄种质的快速鉴定。综上,SSR分析是实现地黄鉴真、聚类、DNA指纹图谱构建的一种有效方法。

关键词: 地黄, 种质, 多态性引物, 遗传多样性分析, SSR指纹图谱, 黄淮产区

Abstract: The main objectives of this study were to clarify the genetic diversity among germplasms of Rehmannia glutinosa in Huang‑Huai production area of China,and understand the genetic relationship among germplasms or accessions,so as to provide a basis for breeding and germplasm identification of Rehmannia glutinosa.108 pairs of SSR primers were used to amplify germplasms and the results were detected by capillary electrophoresis to obtain the genetic similarity coefficients,and count the polymorphic primer information and resolution.SSR fingerprints of those germplasm were constructed by selecting primers with good polymorphism and stability.The softwares TASSEL 3.0 and Fig Tree (V 1.4.3)were used for cluster analysis and mapping.The results showed that 50 pairs of polymorphic primers were obtained and fragment length ranged from 107 bp to 365 bp.The variation range of genetic similarity coefficient among germplasms was 0.552—0.984,and the average value was 0.729.The average genetic similarity coefficient of wild germplasms was significantly lower than that of landraces and cultivated varieties.The clustering results showed that 17 germplasms could be divided into three subgroups.By using 15 pairs of primers with stable polymorphism and high resolution,the SSR fingerprint of Rehmannia glutinosa Germplasms was constructed,and the rapid identification of germplasms from the DNA level was realized.SSR analysis is an effective method to distinguish,cluster Rehmannia glutinosa and construct DNA fingerprint.

Key words: Rehmannia glutinosa, Germplasm, Polymorphism primer, Genetic diversity analysis, SSR fingerprint, Huang?Huai production area

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