云南及周边普通野生稻遗传多样性及其分布特征研究

利用27对SSR标记对云南普通野生稻的2个自然群体进行遗传多样性和起源进化分析,结果发现我国其他省份的材料与东南亚材料的遗传多样性较高,云南元江材料的遗传多样性最低。亲缘关系分析结果表明,云南元江材料与我国其他省份的普通野生稻之间关系较近,云南景洪普通野生稻与缅甸的普通野生稻关系最近,且云南元江和景洪的普通野生稻的遗传结构之间存在明显差异,说明云南普通野生稻属于中国与东南亚普通野生稻的过渡类型,为水稻起源地的"印度阿萨姆——中国云南"学说提供了科学依据。

Analysis on genetic diversity and the origin of Oryza rufipogon Griff in Yunnan Province

To determine the role of Oryza rufipogon Griff.populations in Yunnan Province in the origin of cultivated rice,27 SSR primers were used to analyze the genetic diversity of O.rufipogon Griff.populations from Yunnan and the neighbor areas.The analysis result indicated that the genetic diversity of O.rufipogon Griff.from other provinces of China and Southeast Asia were higher,while that of Yuanjiang materials was the lowest.The relationship analysis results indicated that there was obvious genetic structure between O.rufipogon Griff.in Yuanjiang population and Jinghong population.The population from Yuanjiang County had a closer relationship with those from China;while samples from Jinghong County and Myanmar had the closest relationship.All the results inferred that O.rufipogon Griff.from Yunnan might be the bridge type between those from China and Southeast and South of Asia,which may provide the scientific reference for the theory "Cultivated Rice Originated in the Area from India-Assam to China-Yunnan".