Genic-SSR对中国兰的遗传背景分析
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

中国博士后科学基金;国家自然科学基金项目


Analysis of Genetic Background in Chinese Cymbidiums by Genic-SSR
Author:
Affiliation:

Fund Project:

China Postdoctoral Science Foundation;The National Natural Science Foundation of China

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    摘要:中国兰具有极高的观赏价值,由于其基因组信息的缺乏致使其遗传背景等方面的研究严重滞后。而基因内部标记具有很高的物种间通用性,所以非常适用于相关物种间的遗传学研究。另外,这些标记还可用于揭示中国兰的其他信息,例如遗传背景与地理环境的关系。此研究利用本实验室开发的62个genic-SSR标记分析5个中国兰种的43个品种,其中52个标记呈多态性,其多态性指数(PIC) 从0.054到0.824不等,平均为0.415,遗传多样性分析显示这43个材料之间的遗传距离平均为0.358,范围为0.016-0.600。对这些材料进行了聚类和主成分分析,结果表明大多数来自一个物种的中国兰品种聚类在一起,而春兰分别聚类于几个系统树分支上,具有多起源性。与地理分布信息交叉分析发现:其一, 同一物种的品种往往聚类于一个大的系统树分支,但其来自于不同地区的品种分别聚类于不同小分支;其二,一些来自临近地域的品种往往聚类在一起,而这些品种有时不属于同一物种。这些结果说明遗传背景和地理环境存在一定的联系

    Abstract:

    ABSTRACT: Chinese Cymbidium has extremely high ornamental value. Owing to the lack of its genomic resource, research on its genetic background has been limited. The gene-derived markers (genic markers) have a high transferability, which make them an idea molecular marker for genetic studies across related species. Also, the genic markers could be used to explore the relationship between Chinese cymbidium’s genetic and geographic background. Here, a total of 62 genic-SSR makers in our lab were used for genetic analysis. The results exhibited that 52 were polymorphic when cross-tested among 5 Cymbidium species comprising 43 accessions. The genetic distance averaged 0.389, ranging from 0.016 to 0.600. The polymorphic index content (PIC) of 52 polymorphic markers averaged 0.415, ranging from 0.054 to 0.824. The phylogenetic analysis and principle component analysis (PCA) showed that the most of accessions derived from the same species were grouped together. However, C. goeringii accessions did not always form a separate cluster, suggesting that C. goeringii accessions were polyphyletic. Interdisciplinary cross-analysis of genetic and geographic background indicated that some accessions from same species were clustered into different branches based on their origins; some other accessions from near regions also clustered together, across species.

    参考文献
    相似文献
    引证文献
引用本文

金凤,李小白,金亮,等. Genic-SSR对中国兰的遗传背景分析[J].植物遗传资源学报,2016,17(1):183-188.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2015-02-09
  • 最后修改日期:2015-04-02
  • 录用日期:2015-09-14
  • 在线发布日期: 2016-01-19
  • 出版日期:
您是第位访问者
ICP:京ICP备09069690号-23
京ICP备09069690号-23
植物遗传资源学报 ® 2024 版权所有
技术支持:北京勤云科技发展有限公司