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三系杂交水稻F1是由不育系与恢复系配组而成的，而稳定的不育系又是由相应的理想的保持系回交转育而来，是保持系的同核异质体，其性状主要由核基因决定，而且保持系能结实各性状完整。因此，用不育系配组，对应的保持系为对比材料遗传效果是一致的。本试验的目的是为有效地选
Three-line hybrid rice F1 is composed of CMS lines and restorer lines, and the stable CMS line is derived from the corresponding ideal maintainer line by backcrossing. , Its traits are mainly determined by the nuclear genes, but also maintain the integrity of all traits. Therefore, with CMS lines, the corresponding maintainer line is the same as the genetic material. The purpose of this test is to select effectively