| 基于SSR技术分析玉米PX群体遗传多样性 |
| |
| 引用本文： | 孙 娟,薛吉全,张兴华,张仁和.基于SSR技术分析玉米PX群体遗传多样性[J].西北农业学报,2011,20(2):68-72. |
| |
| 作者姓名： | 孙 娟 薛吉全 张兴华 张仁和 |
| |
| 作者单位： | 西北农林科技大学,农学院,陕西杨凌,712100 |
| |
| 基金项目： | 陕西省“13115”科技创新工程重大科技专项(2009ZDGC-01) |
| |
| 摘 要： | 基于SSR标记方法分析西北农林科技大学农学院玉米课题组组建的PX群体在5个世代、5个地点的遗传变异规律。结果表明,PX群体不同世代多态性位点数和多态性位点比例为Ⅳ>Ⅱ>Ⅴ>Ⅲ>Ⅰ;多态性条带数、多态性条带百分率、有效等位基因数、基因多样性指数、Shannon信息指数表现为Ⅱ>Ⅳ>Ⅴ>Ⅲ>Ⅰ。PX群体5个世代聚类分析可分为2大类,第1类包括Ⅰ和Ⅲ世代,第2类包括Ⅱ、Ⅳ和Ⅴ世代。5个地点选择的材料可划分为杨凌和宝鸡、安康和汉中、延安3类。说明选择材料生态条件的相似性决定了群体遗传特征一致性,多元化的生态环境选择是扩大群体遗传多样性的重要手段。
|
| 关 键 词： | 遗传多样性 群体改良 世代 生态区域 |
Genetic Diversity of PX Population Analyzed by SSR Markers |
| |
| SUN Juan,XUE Jiquan,ZHANG Xinghua and ZHANG Renhe.Genetic Diversity of PX Population Analyzed by SSR Markers[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(2):68-72. |
| |
| Authors: | SUN Juan XUE Jiquan ZHANG Xinghua and ZHANG Renhe |
| |
| Institution: | SUN Juan,XUE Jiquan,ZHANG Xinghua and ZHANG Renhe(College of Agronomy,Northwest A&F University,Yangling Shaanxi 712100,China) |
| |
| Abstract: | Based on SSR markers,the PX population improvement in five cycles and five areas were analyzed.Using.The number and tatio polymorphic alleles in five cycles arranged by Ⅳ>Ⅱ>Ⅴ>Ⅲ>Ⅰ;Number of polymorphic loci,Proportion of polymorphic loci,Effective number of alleles,Gene diversity and Shannon’s information index arranged by Ⅱ>Ⅳ>Ⅴ>Ⅲ>Ⅰ.Five cycles were divided two groups,one is Ⅰand Ⅲ,the other is Ⅱ、Ⅳand Ⅴ.The five areas selected were divided three groups:Yangling,Baoji;Ankang,Hanzhong;Yan’an.It indicated that The similar ecological environment causes concurrention of population’s genetic characteristics,the selection in multiple ecological environment is an important methods to expand population genetic diversity. |
| |
| Keywords: | Gene diversity Population improvement cycles ecological environment |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《西北农业学报》浏览原始摘要信息 |
| 点击此处可从《西北农业学报》下载免费的PDF全文 |
|
