数字农科院2.0

Conservation recommendations for Oryza rufpogon Grif. in China based on genetic diversity analysis

文献类型： 外文期刊

作者： 王君瑞;;时津霞;;刘莎;;孙希平;;黄娟;;乔卫华;;程云连;;张丽芳;;郑晓明;;杨庆文

关键词： wild rice;;genetic structure;;genetic variation;;population genetic

期刊名称： Scientific Reports

ISSN： 2045-2322

年卷期： 2020 年

页码：

收录情况： JCR（2021版）

摘要： Over the past 30 years, human disturbance and habitat fragmentation have severely endangered the survival of common wild rice (Oryza rufpogon Grif.) in China. A better understanding of the genetic structure of O. rufpogon populations will therefore be useful for the development of conservation strategies. We examined the diversity and genetic structure of natural O. rufpogon populations at the national, provincial, and local levels using simple sequence repeat (SSR) markers. Twenty representative populations from sites across China showed high levels of genetic variability, and approximately 44% of the total genetic variation was among populations. At the local level, we studied fourteen populations in Guangxi Province and four populations in Jiangxi Province. Populations from similar ecosystems showed less genetic diferentiation, and local environmental conditions rather than geographic distance appeared to have infuenced gene fow during population genetic evolution. We identifed a triangular area, including northern Hainan, southern Guangdong, and southwestern Guangxi, as the genetic diversity center of O. rufpogon in China, and we proposed that this area should be given priority during the development of ex situ and in situ conservation strategies. Populations from less common ecosystem types should also be given priority for in situ conservation.

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