杂交水稻具有明显的杂种优势,但只能利用第一代,第二代则分离多种多样类型。如能通过育种手段加以利用,则是极为丰富的育种材料。两年来,我们大量采用杂交水稻单倍体育种,并对花培后代进行了初步观察和分析,现把试验情况简介如下:花培后代性状的多样性利用杂交水稻第一代为接种材料。由于亲本源是不育系、保持系和恢复系,具有血统远缘(野生稻和栽培稻)和地理远缘(本地稻和 Hybrid rice has obvious heterosis, but can only use the first generation, the second generation is the separation of a wide variety of types. If it can be used by means of breeding, it is a very rich breeding material. In the past two years, we used a large number of hybrid rice haploid breeding, and carried out a preliminary observation and analysis of flower progeny, the experimental conditions are as follows: The diversity of traits in flower progeny The first generation of hybrid rice as inoculation material. As the parental source is sterile, maintainer and restorer lines, with distant ancestry (wild and cultivated rice) and geographic distant (native rice and