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本试验选用国内外栽培稻种102个,以品种间杂交子一代(F_1)不实率的高低,研究栽培稻种的亲缘关系。试验结果,中国栽培稻种分为秈、粳二类,与习惯上分法一样,但亲缘关系相当复杂,有少数偏近秈稻或粳稻的中间类型。根据试验结果,并参考各方面的研究,作者认为中国秈、粳稻系同一起源,出自中国野生的 O.sativa L.f.spontanea,梗稻可能是由中国南方秈稻演化为光壳一类的陆稻品种而来的。
In this study, 102 domestic and oversea cultivated rice cultivars were selected to study the genetic relationship of cultivated rice varieties based on the false positive rate of F1 hybrids. As a result, the cultivated rice varieties in China are divided into indica and japonica categories, which are the same as those used in customary classification. However, the genetic relationship is rather complicated with a few intermediate types close to indica or japonica. According to the test results and referring to various studies, the author believes that the same origin of indica and japonica rice from China is derived from the wild O.sativa Lfspontanea in China, and stem rice may be a Upland rice variety evolved from indica rice in Southern China into a light shell Come on.