Genetic Structure and Eco-Geographical Differentiation of Cultivated Keng Rice (Oryza sativa L. subsp japonica) in China Revealed by Microsatellites
文献类型: 外文期刊
第一作者: Zhang Dong-ling
作者: Zhang Dong-ling;Wang Mei-xing;Qi Yong-wen;Sun Jun-li;Wang Feng-mei;Li Jin-jie;Zhang Hong-liang;Li Zi-chao;Wang Mei-xing;Qi Yong-wen;Sun Jun-li
作者机构:
关键词: japonica rice;population structure;eco-geographical differentiation;China;microsatellites
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2012 年 11 卷 11 期
页码:
收录情况: SCI
摘要: China is one of the largest centers of genetic diversity of Oryza saliva L. and is the original centers of Oryza saliva L. subspecies japonica. Using a genetically representative core collection of 1442 rice landraces of japonica in China, the genetic structure, differentiation, and geographic diversity were analyzed. The model-based structure analysis on varieties within three ecotypes revealed 16 eco-geographical types, which are partially accorded with some of the ecological zones in China. The differentiation of eco-geographical types contributed to the local ecological adaption and physical isolation, and maybe could be used to develop the heterotic groups of japonica. To facilitate the identification of different ecotypes and eco-geographical types, we provided the SSR character alleles of each ecotype or geographical eco-group and a rapid discriminated method based on these character alleles. Lastly, investigation on genetic diversity, genetic differentiation indicated that southwest region of China, including south of Yunnan Province, northwest of Guangxi Zhuang Autonomous Region, and southwest of Guizhou Province, possessed the highest genetic diversity and all the necessary conditions as a center of genetic diversity and should be the center of genetic diversity of rice landraces of japonica in China.
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