The single-origin model suggests that indica and japonica were both domesticated from the wild rice O. rufipogon.
这一同源模型说明籼稻和粳稻是由同一种普通野生稻驯化而来的。
Another theory proposes that the two major sub-species of rice - Oryza sativa japonica and O. sativa indica - were domesticated separately and in different parts of Asia.
另一种理论提出粳稻和籼稻这两种主要的水稻亚种是在亚洲不同地区分别被培育的。
Aim: To understand the genetics of the pollen fertility and spikelet fertility of F1 hybrids of the indica-compatible japonica lines in rice o.
目的:弄清粳型亲籼系花粉育性和小穗育性的遗传规律,选育优良水稻品种。
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