论文部分内容阅读
1981-1983年通过我国热带山地稻种与我国普通籼、粳杂交共186个组合的杂交F_1结实率研究结果表明,在形态鉴定的基础上,通过杂交F_r的结实率研究稻种的亲缘关系是可取的。从试验结果,得以分析低纬山地稻种的类型分化和在进化上的地位。其中有些品种与普通籼、粳杂交,即可以获得较高结实率的后代,在育种上可加以利用,以扩大遗传背景,並提出超高产育种的设想。
In 1981-1983, the results of cross F_1 seed setting rate of 186 hybrid rice varieties from China and China were analyzed. The results showed that the genetic relationship of F_r seed setting rate based on morphological identification was feasible. From the experimental results, we can analyze the type differentiation and evolutionary status of rice in low latitude mountainous area. Some of these hybrids are crossed with common indica and japonica hybrids, and the offspring with higher seed setting rate can be used in breeding to expand the genetic background and propose the idea of super-high-yielding breeding.