Ketamura.E、Ikehashi.H和笔者等人的先后研究认为,表面上看起来非常复杂的水稻亚远缘杂交的广亲和性由一对主基因起关键作用,如果将这种显性的广亲和性基因转入籼稻或粳稻品种中,可能培育出结实正常的强优籼粳交组合用于生产。袁隆平教授率先在我国利用这种广亲和性基因培育籼 The successive studies by Ketamura.E, Ikehashi.H and the author, et al., Suggest that the broad compatibility of seemingly complex rice sub-distant hybridization plays a key role by a pair of major genes. If this dominant Affinity genes into indica or japonica rice varieties may develop strong, normal strong indica japonica crosses for production. Professor Yuan Longping took the lead in using this wide compatibility gene to cultivate Indica