生物技术通报 ›› 2015, Vol. 31 ›› Issue (6): 93-99.doi: 10.13560/j.cnki.biotech.bull.1985.2015.06.034

• 研究报告 • 上一篇    下一篇

河北区试小麦品种(系)DNA指纹图谱构建及遗传差异分析

李宏博1,2 庞斌双2 刘丽华2 刘阳娜2 赵昌平2 陈景堂1   

  1. 1. 河北农业大学农学院,保定 071001;2. 北京市农林科学院杂交小麦工程技术研究中心 杂交小麦分子遗传北京市重点实验室,北京 100097
  • 收稿日期:2015-03-24 出版日期:2015-06-19 发布日期:2015-06-20
  • 作者简介:李宏博,男,硕士研究生,研究方向:分子育种;E-mail:li-hb1208@163.com
  • 基金资助:
    国家科技支撑计划(2014BAD01B09,2013BAD04B01),北京市农林科学院科技创新重大专项(KJCX20140421,KJCX20140202)

Construction of DNA Fingerprinting and Analysis of Genetic Diversity for Wheat Varieties(Lines) in Regional Test of Hebei

Li Hongbo1,2, Pang Binshuang2, Liu Lihua2, Liu Yangna2, Zhao Changping2, Chen Jingtang1   

  1. 1. Department of Agronomy,Agricultural University of Hebei,Baoding 071001;2. Hybrid Technology Engineering Research Center of Wheat,Beijing Academy of Agriculture and Forestry,The Municipal Key Laboratory of Hybrid Wheat Molecular Genetic,Beijing 100097
  • Received:2015-03-24 Published:2015-06-19 Online:2015-06-20

摘要: 采用42个 SSR 标记为 2009-2013年河北省区域试验的70份小麦品种(系)构建DNA指纹图谱,进行遗传差异分析,为小麦品种改良和种质资源创新提供参考。结果表明,42个SSR 标记在70份品种(系)中共检测到303个等位变异,单个SSR位点的平均等位变异为7.21个,PIC值平均0.69;基因多样性平均0.73,遗传相似系数变化范围为0.05-1.00,平均0.28;表明参加河北省区域试验的品种(系)间存在不同程度的遗传差异。聚类分析把70份品种(系)划分为4大类,6个亚类,表明同一育种单位或地区品种(系)遗传背景相近,应该加大外来小麦种质资源的引进和利用力度。

关键词: 小麦, SSR标记, DNA指纹图谱, 遗传差异

Abstract: In order to provide a reference for improving and innovating breeding materials, we used forty two pairs of SSR primers to construct DNA fingerprints and detect genetic diversity among 70 wheat varieties(lines), which participated in regional test of Hebei in 2009-2013. The results showed that 303 allelic were revealed on 42 SSR loci, 7.21 alleles were detected for each SSR locus, and the average PIC(polymorphism information content)value was 0.69. Moreover, the average gene diversity was 0.73, and the genetic similarity varied from 0.05 to 1.00 with the average of 0.28. These results indicated that there is a large genetic difference between the wheat varieties(lines)in regional test of Hebei. The cluster analysis divided the 70 wheat varieties(lines)into four groups and six subgroups by UPGMA method. These results show that the wheat varieties(lines)have similar genetic background in the same breeding institute or region. We should strengthen the introduction and utilization of foreign wheat germplasm resources.

Key words: wheat, SSR markers, DNA fingerprinting, genetic varieties