Geographical genetic diversity and divergence of common wild rice (O. rufipogon Griff.) in China  

作　　者：WANG MeiXing ZHANG HongLiang ZHANG DongLing PAN DaJian LI DaoYuan FAN ZhiLan QI YongWen SUN JunLi YANG QingWen LI Chen LI ZiChao 

机构地区：[1]Key Laboratory of Crop Genomics & Genetic Improvement of Ministry of Agriculture and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing 100193, China [2]Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China [3]Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China [4]Institute of Crop Science, CAAS, Beijing 100081, China [5]Institute of Crops and Utilization of Nuclear Technology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

出　　处：《Chinese Science Bulletin》2008年第22期3559-3566,共8页

基　　金：the National Basic Research and Development Program of China (Grant No. 2004CB117201);Program for Changjiang Scholars and Innovative Re-search Team in University;Programme of Introducing Talents of Discipline to Universities (Grant No. 111-2-03)

摘　　要：Using 36 SSR markers and 889 accessions of common wild rice in China, the genetic diversity and the divergence among different geographical populations are investigated. Guangdong Province has the largest number of alleles, which account for 84% of the total alleles detected in the study, followed by Guangxi Province. The Nei's gene diversity indices, from high to low, are in the sequence of Hainan, Guangdong, Guangxi, Fujian, Hunan, Jiangxi, and Yunnan provinces. Two genetic diversity centers of Chinese common wild rice are detected on the basis of geographic analysis, i.e., the region covering Boluo, Zijin, Lufeng, Haifeng, Huidong and Huiyang counties of Guangdong Province and the region covering Yongning, Longan, Laibin and Guigang counties of Guangxi Province. The common wild rice in Yunnan, Hunan, Jiangxi, and Fujian provinces are diverged into respectively independent populations with relatively large genetic distances, whereas, those in Hainan, Guangdong and Guangxi provinces have relatively low genetic divergence. Under the condition of geographic separation, natural selection is considered as one of the primary forces contributing to the divergence of common wild rice in China.Using 36 SSR markers and 889 accessions of common wild rice in China, the genetic diversity and the divergence among different geographical populations are investigated. Guangdong Province has the largest number of alleles, which account for 84% of the total alleles detected in the study, followed by Guangxi Province. The Nei＇s gene diversity indices, from high to low, are in the sequence of Hainan, Guangdong, Guangxi, Fujian, Hunan, Jiangxi, and Yunnan provinces. Two genetic diversity centers of Chinese common wild rice are detected on the basis of geographic analysis, i.e., the region covering Boluo, Zijin, Lufeng, Haifeng, Huidong and Huiyang counties of Guangdong Province and the region covering Yongning, Longan, Laibin and Guigang counties of Guangxi Province. The common wild rice in Yunnan, Hunan, Jiangxi, and Fujian provinces are diverged into respectively independent populations with relatively large genetic distances, whereas, those in Hainan, Guangdong and Guangxi provinces have relatively low genetic divergence. Under the condition of geographic separation, natural selection is considered as one of the primary forces contributing to the divergence of common wild rice in China.

关 键 词：野生稻 遗传多样性 遗传差异 SSR 

分 类 号：S511.9[农业科学—作物学] Q81[生物学—生物工程]