拉市海穗状狐尾藻居群克隆结构和遗传多样性研究  

Clonal Structure and Genetic Diversity of Myriophyllum spicatum Populations in Lashihai Lake

作　　者：仇玉萍[1] 陈国柱[1] 肖德荣[1] 

机构地区：[1]西南林业大学国家高原湿地研究中心,云南昆明650224

出　　处：《西南林业大学学报（自然科学）》2017年第3期26-31,共6页Journal of Southwest Forestry University：Natural Sciences

基　　金：云南省教育厅一般项目(2014Y335)资助;西南林业大学博士研究启动基金(111041)资助;西南林业大学高原湿地科学省创新团队(2012HC007)资助

摘　　要：穗状狐尾藻为拉市海高原湿地的优势沉水植物,采用ISSR标记对其进行了遗传多样性和克隆多样性研究。结果表明:拉市海穗状狐尾藻具有较高的遗传多样性(H=0.155 9,I=0.239 2)和克隆多样性(D=0.917 3),3个区域的穗状狐尾藻的遗传多样性水平相差不大,遗传分化较小,但相互之间无共同基因型。较高的遗传多样性和克隆多样性可以在一定程度上揭示,穗状狐尾藻能够在短期内成为拉市海优势植物群落的建群机制。In this paper we investigated the genetic diversity and clonal structure of Myriophyllum spicatum, a dominant submerged plant in Lashihai Lake, using ISSR analysis. The results showed that there have relatively high levels of genetic diversity （H= 0. 155 9, 1= 0. 239 2） and clonal diversity （D = 0. 917 3） across the distribution range, based on the polymorphic loci of M. spicatum. There has no obviously difference of genetic diversity among 3 distinct populations, but no common genotype was found in them. These results indicated that the high genetic diversity and clonal diversity maybe the main mechanisms of M. spicatum causing to flourish in Lashihai Lake in short time.

关 键 词：穗状狐尾藻 遗传多样性 克隆多样性 筑坝扩容 

分 类 号：S722.3[农业科学—林木遗传育种]