Abstract: Rice cultivars 02428, 8504, and CPSLO17 were crossed with three indica testers, i. e. Nanjing 11, IR36, Ce49 and three japonica testers, i. e. Balila, Akihikari, Toyonishiki, the spikelet fertility of F₁ hybrids is 78.7%～97.9%, the mean spikelet fertility of F₁ hybrids included 02428, 8504 and CPSLO17 as one parent is 90.2%, 82.4% and 90.9% respectively. It suggests that the inheritance of wide compatibility in these WCVs might be controlled by a single major gene modified by minor genes, and the wide compatibility gene not only link with chromogen gene C⁺ located in linkage group I, but also its inheritance fits to one-locus sporo-gametophytic interaction model.

Key words: Chromogen gene, Inheritance, Linkage, Wide compatibility, Gene location

摘要： 以02428、8504和CPSLO 17与籼型测验种南京11、IR36、测49和粳型测验种巴利拉、秋光、丰锦测交，F1杂种的小穗育性为78.8%～97.9%，其平均值02428为90.2%，8504为82．4%，CPSLO 17为90.9%。以CPSLO 17作对照，研究了02428、8504的广亲和性遗传，推测它们的广亲和性遗传都是由一对主基因控制的，广亲和基因与色素原基因C+连锁位于第Ⅰ连锁群上，遗传规律符合单位点孢子体-配子体互作模式，并受微效基因的修饰作用。

关键词: 广亲和性, 遗传, 水稻, 色素原基因, 基因