Abstract: Screening for wide compatible varieties (WCVs) as well as studies on compatible range inheritance of WCVs were carried out during 1986-1992. The results indicated as followings:1) Most of WCVs could be obtained from cultivars introduced from America or lines derived from indica-japonica hybrid, such as T984, Jia 40, Pecos and L201. 2)The compatible range of WCVs was different from each other, T984, Jia 40, Nekkon 1 and Chugoko (No.) 91 possessed wider compatible range than Zhongzuo 180 and Dourada Precoce. usually called as specific line. 3) The genetic performance of the wide compatibility varied in WCVs studied and tester used. The wide compatibility of Nekkon 1 (Nanjing 11 and 76-27B used as indica and japonica testers was controlled by single gene S_n⁵ , having 4.71% recombination value with gene C located on chromosome 6; while the wide compatibility of Pecos and L201 (Nanjing 11 and Akihikari used as testers) was controlled by a major gene linked with gene C as well as modified by minor genes; however, the wide compatible gene in T984 (Fu 8-1 and Akihikari used as testers) was independent of gene C. in addition, the wide compatibility of F₂ plants originating from WCVs / japonica tester was related with the average seed-setting rate of their F₃ lines.

Key words: compatible range: inheritance, wide compatibility, heterosis, rice

摘要： 从1986年始对水稻广亲和性的资源筛选，亲和谱，遗传和利用进行了研究。试验结果表明：1）在籼粳杂种后代材料及美国稻品种中存在较丰富的广亲和品种，如T984，嘉40，Pecos和L201等均表现有良好的亲和性。2）各广亲和品种亲和谱存在明显的差异。T984，中国91，热研1号和嘉40的亲和谱较宽；而Dourada Percos和中作180的亲和谱较窄，即所谓的特写亲和性品种。3）广亲和品种的亲和性遗传亦有不同的表现。热研1号的广亲和性（以南京11和76-27bB作为籼粳测验种）受一对S_n⁵基因控制，其位于第6染色体山，与色素原基因C的交换值为4.71%；Pecos和L201的广亲和性（以南京11和秋光为测验种）除受色素原基因C连锁的主效基因控制外，还存在微效基因的修饰；T984的广亲和性（以辐8-1和秋光为测验种）与色素原基因C相互独立。此外，广亲和品种/粳型测验种的F2植株的亲和性强弱与相应的F3株系的平均结实率高低存在一定的关系。

关键词: 遗传, 广亲和性, 水稻, 杂种优势