浙江农业学报

• 环境科学 • 上一篇    下一篇

基于ISSR标记的中国稻田稗属植物分类

  

  1. (1 中国水稻研究所,浙江 杭州 311400;2上海师范大学 生命与环境科学学院,上海 200234)
  • 出版日期:2014-09-25 发布日期:2014-10-11

Classification of Echinochloa species in Chinese paddy fields based on ISSR markers

  1. (1 China National Rice Research Institute, Hangzhou 311400, China; 2 College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China)
  • Online:2014-09-25 Published:2014-10-11

摘要: 采用ISSR分子标记技术对采自中国14个省区的53个稗属植物(Echinochloa Beauv.)样本进行分子鉴定。利用9条筛选出的引物一共扩增出137条DNA谱带,其中包括136条多态性条带,多态位点百分率为993%。基于ISSR标记,构建了反映各样本间遗传亲缘关系的系统聚类图。结果表明,53个样本可分为9个类群,分别对应于长芒稗(E. caudata,5份样本)、细叶旱稗(E. crusgalli var. praticola,8份)、短芒稗(E. crusgalli var. breviseta,6份)、孔雀稗(E. cruspavonis,3份)、西来稗(E. crusgalli var. zelayensis,5份)、稗原变种(E. crusgalli)和无芒稗(E. crusgalli var. mitis,共14份)、光头稗(E.colona,2份)、硬稃稗(E. glabrescens,5份)和水田稗(E. oryzoides,5份)。从聚类结果看,基于形态特点的中国稻区稗草属植物分类群有一定的遗传学基础,但是关于其亲缘关系和分类地位仍然值得探讨。

关键词: 稗属植物(Echinochloa Beauv.), ISSR分子标记, 聚类分析

Abstract: Fifty three Chinese Echinochloa samples collected from 14 provinces were classified through inter\|simple sequence repeat (ISSR) markers. It was shown that 137 bands were amplified by 9 selected primers, and 136 of them were polymorphic. Based on the results, 53 samples were clustered into 9 groups, i.e. E. caudata(5 samples), E. crusgalli var. praticola (8 samples), E. crusgalli var. breviseta(6 samples), E. cruspavonis(3 samples), E. crusgalli var. zelayensis(5 samples), E. crusgalli and E. crusgalli var. mitis(14 samples), E. colona(2 samples), E. glabrescens(5 samples) and E. oryzoides(5 samples). The present classification of Echinochloa species in Chinese paddy fields was in accordance with morphological traits. However, their genetic relationship and systematic level still needs to be further investigated.

Key words: Echinochloa, ISSR molecular marker, cluster analysis