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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Phylogeography of Asian wild rice, Oryza rufipogon, reveals multiple independent domestications of cultivated rice, Oryza sativa
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Phylogeography of Asian wild rice, Oryza rufipogon, reveals multiple independent domestications of cultivated rice, Oryza sativa

机译：亚洲野生稻Oryza rufipogon的系统记录显示，栽培稻Oryza sativa的多种独立驯化

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摘要

Cultivated rice, Oryza sativa L., represents the world's most important staple food crop, feeding more than half of the human population. Despite this essential role in world agriculture, the history of cultivated rice's domestication from its wild ancestor, Oryza rufipogon, remains unclear. In this study, DNA sequence variation in three gene regions is examined in a phylogeographic approach to investigate the domestication of cultivated rice. Results indicate that India and Indochina may represent the ancestral center of diversity for O. rufipogon. Additionally, the data suggest that cultivated rice was domesticated at least twice from different O. rufipogon populations and that the products of these two independent domestication events are the two major rice varieties, Oryza sativa indica and Oryza sativa japonica. Based on this geographical analysis, O. sativa indica was domesticated within a region south of the Himalaya mountain range, likely eastern India, Myanmar, and Thailand, whereas O. sativa japonica was domesticated from wild rice in southern China.
机译：栽培稻Oryza sativa L.是世界上最重要的主食作物，其一半以上的人口食用。尽管在世界农业中起着至关重要的作用，但仍不清楚其野生祖先Oryza rufipogon栽培稻的驯化历史。在这项研究中，通过系统地理学方法研究了三个基因区域的DNA序列变异，以研究栽培稻的驯化。结果表明，印度和印度支那可能是红景天多样性的祖先中心。此外，数据表明，栽培稻是从不同的红景天种群中驯化的，至少两次，这两个独立的驯化事件的产物是两个主要水稻品种，水稻（Oryza sativa indica）和水稻（Oryza sativa japonica）。根据这一地理分析，印度稻被驯化在喜马拉雅山脉以南的地区，可能是印度东部，缅甸和泰国，而日本粳稻则是从中国南部的野生稻中驯化的。

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