北方农业学报 ›› 2019, Vol. 47 ›› Issue (5): 1-8.doi: 10.3969/j.issn.2096-1197.2019.05.01

• 种质资源·作物栽培 •    下一篇

披碱草属牧草DNA指纹图谱构建及遗传多样性分析

张锐1, 唐艾嘉1, 解继红2, 石凤翎1,3,4, 赵彦1,3,4   

  1. 1.内蒙古农业大学 草原与资源环境学院,内蒙古 呼和浩特 010011;
    2.中国农业科学院 草原研究所,内蒙古 呼和浩特 010010;
    3.农业农村部饲草栽培加工与高效利用重点实验室,内蒙古 呼和浩特 010018;
    4.草地资源教育部重点实验室,内蒙古 呼和浩特 010018
  • 收稿日期:2019-09-02 出版日期:2019-10-20 发布日期:2019-12-11
  • 通讯作者: 赵彦(1976—),女,副教授,博士,主要从事牧草遗传育种的研究工作。
  • 作者简介:张锐(1996—),女,硕士研究生,研究方向为草资源遗传育种。
  • 基金资助:
    内蒙古农业大学科技成果转化专项资金项目(YZGC2017014)

DNA fingerprinting and genetic diversity analysis of Elymus pastures

ZHANG Rui1, TANG Aijia1, XIE Jihong2, SHI Fengling1,3,4, ZHAO Yan1,3,4   

  1. 1.College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010011,China;
    2.Grassland Research Institute,Chinese Academy of Agricultural Sciences,Hohhot 010010,China;
    3.Key Laboratory of Forage Cultivation,Processing and High Efficient Utilization of Ministry of Agriculture and Rural Affairs,Hohhot 010018,China;
    4.Key Laboratory of Grassland Resources,Ministry of Education,Hohhot 010018,China
  • Received:2019-09-02 Online:2019-10-20 Published:2019-12-11

摘要: 为给披碱草种质资源研究、育种、品种鉴定提供参考资料,利用ISSR和SRAP分子标记技术,构建了26份披碱草代表性种质材料(其中包括9个登记品种)的DNA指纹图谱,并进行了遗传多样性分析。结果表明:筛选出10个ISSR引物,共扩增出95条清晰条带,其中多态性条带90条,多态性条带比率为94.74%;筛选出10对SRAP引物进行扩增,共扩增出110条清晰条带,其中多态性条带有100条,多态性条带比率为90.91%。供试的26份披碱草材料间的遗传相似系数变幅为0.57~0.89,平均值为0.73,表明供试材料间有着丰富的遗传多样性。基于GS值进行聚类分析,在GS值为0.67处,将26份披碱草材料分为4类。利用ISSR引物UBC818 和SRAP引物me4+em16分别构建了26份披碱草材料的指纹图谱。

关键词: 披碱草, ISSR, SRAP, 遗传多样性, DNA指纹图谱

Abstract: The study provides reference materials for the research,breeding and variety identification germplasm resources of Elymus.The DNA fingerprints of 26 Elymus germplasm materials (including 9 Registered varieties)were constructed using ISSR and SRAP molecular markers and the genetic diversity was analyzed.The results were as follows:95 bands were amplified clearly using 10 single ISSR primers.90 of 95 bands are polymorphic and the percentage of polymorphic bands is 94.74%.In addition,110 bands were amplified clearly using 10 pairs of SRAP primers.100 of the 110 amplified bands are polymorphic and the percentage of polymorphic bands is 90.91%.The genetic similarity coefficient(GS)among the 26 examined Elymus germplasm materials was 0.57~0.89,with an average of 0.73,indicating a rich genetic diversity.UPGMA cluster analysis was carried out based on the GS values and the 26 Elymus germplasm materials were divided into four groups at the GS value of 0.67.The DNA fingerprints of 26 Elymus germplasm materials were constructed using the ISSR primer UBC818 and the SRAP primers me4+em16.

Key words: Elymus, ISSR, SRAP, Genetic diversity, DNA fingerprinting

中图分类号: 

  • S543.9