四川农业大学学报 ›› 2010, Vol. 28 ›› Issue (03): 271-275.

• 研究论文 • 上一篇    下一篇

青藏高原仲彬草属植物叶绿体rbcL序列的谱系分析

凡星   

  1. 四川农业大学
  • 收稿日期:2010-08-25 修回日期:2010-08-30 出版日期:2010-09-30 发布日期:2010-09-30
  • 通讯作者: 凡星

Genealogical analysis of the rbcL sequences of Kengyilia (Triticeae: Poaceae) species from the Qinghai-Tibetan Plateau

xing 0fan   

  1. Sichuan agricultural university
  • Received:2010-08-25 Revised:2010-08-30 Online:2010-09-30 Published:2010-09-30
  • Contact: xing 0fan

摘要:

本研究对9个青藏高原植被区的仲彬草属(StYP)植物及2个拟鹅观草属(St)物种和2个冰草属(P)植物共13个类群的叶绿体rbcL序列进行遗传和基因谱系分析,探讨青藏高原仲彬草属植物的系统关系及其物种形成的母本供体来源。结果表明:(1)Kengyilia stenachyra、Kengyilia kokonorica、Kengyilia hirsuta、Kengyilia rigidula和Kengyilia grandiglumis的种间关系较近;(2)Kengyilia stenachyra和Kengyilia geminata在rbcL序列上发生了一定程度的分化;(3)拟鹅观草属和冰草属植物均可能作为母本供体参与青藏高原植被区不同仲彬草属植物的物种形成。

关键词: 仲彬草属, 叶绿体rbcL, 谱系分析, 母本供体

Abstract:

To estimate phylogenetic relationships of the Qinghai-Tibetan Plateau Kengyilia species and the maternal donor during its speciation events, chloroplast rbcL sequence were analyzed for nine Kengyilia taxa, together with two Pseudoroegneria (St) and two Agropyron (P) taxa. Genetic and genealogical analysis suggested that: (1) there is a close relationship among Kengyilia stenachyra, Kengyilia kokonorica, Kengyilia hirsute, Kengyilia rigidula and Kengyilia grandiglumis; (2) the rbcL sequences of Kengyilia stenachyra and Kengyilia geminate are evolutionarily distinct; (3) both Pseudoroegneria and Agropyron could serve as the maternal donor during the speciation of allotetraploid Kengyilia speices from the Qinghai-Tibetan Plateau.

Key words: Kengyilia, chloroplast rbcL sequence, genealogical analysis, maternal donor