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林业科学 ›› 2009, Vol. 12 ›› Issue (2): 22-26.doi: 10.11707/j.1001-7488.20090204

• 论文 • 上一篇    下一篇

欧洲榛微卫星对我国榛属种质资源的分析

程丽莉1 黄武刚1 周志军2 刘建立3 王艳梅3 苏淑钗3 翟明普3   

  1. (1.北京市农林科学院林业果树研究所 北京100093;2.北京市昌平林业局 北京102200;3.北京林业大学 北京100083)
  • 收稿日期:2008-02-01 修回日期:1900-01-01 出版日期:2009-02-25 发布日期:2009-02-25

Genetic Diversity of Six Corylus Species in China Detected with Microsatellite Isolated from Corylus avellana

Cheng Lili1,Huang Wugang1,Zhou Zhijun2,Liu Jianli3,Wang Yanmei3,Su Shuchai3,Zhai Mingpu3   

  1. (1. Beijing Institute of Forestry and Pomology,Beijing Academy of Agricultural and Forestry Sciences Beijing 100093;2. Changping District Forest Department Beijing 102200; 3. Beijing Forestry University Beijing 100083)
  • Received:2008-02-01 Revised:1900-01-01 Online:2009-02-25 Published:2009-02-25

摘要:

摘 要:利用多态性高、重复性好的11对欧洲榛微卫星引物对榛属6个近缘种的34个DNA样本进行扩增,共获得81个等位基因,每个座位的等位基因数在4~13之间,平均数目为7.36个,位点的多态信息含量(PIC)介于0.47~0.86,平均为0.73。PCR扩增产物的DNA测序证明欧洲榛SSR基因座位中微卫星序列在6个种内的保守性,而在CAC C28位点,一个被忽略的短三碱基重复序列也表现出长度多态性。另外,对于具有商业潜力的平榛、毛榛、川榛3个种的遗传多样性分析表明,平榛的遗传多样性最高,为0.59。研究结果表明欧洲榛微卫星是用于榛属资源保护、品种改良以及种间遗传图谱构建的有力工具。

关键词: 关键词:榛属, 微卫星, 多态性, DNA测序

Abstract:

Abstract: Diversity of 6-Corylus-species distributed in China was analyzed by 11 SSR markers isolated from C. avellana. A total of 81 alleles were amplified by 11 high informative SSR primer pairs from 34 DNA templates of the accessions tested. Number of alleles per locus ranged from 4 to 13 with an average value of 7.36. Average value of polymorphic information content (PIC) was 0.73,ranged from 0.47 to 0.86 Sequencing the PCR amplified DNA showed there existed microsatellites of C.avellana in 6-Corylus-species. Other short tri-nucleotide repeat sequence also exhibited variable in repeat numbers at CAC C28 locus. In addition,the average Nei's gene diversity index was 0.59 for all the loci of three species, including Corylus heterophylla,Corylus mandshurica and Corylus heterophylla var. sutchuenensis, which were of potential commercial value. This study demonstrated that the silver-staining SSR was a useful tool for genetic diversification, source conservation, variety identification and construction of molecular map among species of the genus Corylus.

Key words: Key words: Corylus, SSR marker, polymorphism, DNA sequencing