近年来,不少水稻育种工作者进行早、晚不同生态型品种间杂交,试图使早稻优良丰产性能和晚稻优越的抗性相结合,培育出有突破性的水稻新品种。本试验目的是在尽可能相一致的环境条件和遗传背景下,在早、晚稻品种间杂交后代连续选育的基础上,重点比较分析其后代的表型表现和遗传传递规律,为杂交育种提供理论依据。 In recent years, many rice breeders conducted hybridization between different ecotypes of early and late varieties in an attempt to combine the excellent yield performance of early rice and the superior resistance of late rice to breed new breakthrough rice varieties. The purpose of this experiment is to conduct a comparative analysis of phenotypic performance and genetic transmission of offspring on the basis of continuous breeding of the progenies of early and late rice hybrids under the same possible environmental conditions and genetic background as possible to provide hybrid breeding Theoretical basis.