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Ａｕｓ３７３是典型的秋稻广亲和品种，曾有报道指出，Ａｕｓ３７３广亲和基因位于第七染色体上，与ＲＦＬＰ标记ＲＺ４８８、ＲＧ５１１连锁，该基因暂被命名为Ｓａ（ｔ）ｎ［３］。在此基础上，该研究对Ａｕｓ３７３广亲和基因在ＲＦＬＰ图谱上的定位作了初步尝试。分析了Ｓ５和Ｓａ（ｔ）两位点的遗传效应。在Ａｕｓ３７３／轮回４２２的Ｆ２群体中，Ｓｎ５和Ｓａ（ｔ）ｎ效应基本相同，表现为重复基因作用的特点。推测群体中出现的１／１６半不育株，是这两个广亲和基因位点非亲和性基因互作的结果。借助于分子标记辅助选择，筛选了１株可能具有两个位点广亲和基因的纯合重组体。并对有关秋稻的广亲和基因、Ｓｎｓ与Ｓａ（ｔ）ｎ之间的相互关系及Ｓａ（ｔ）ｎ的应用前景等问题进行了分析和探讨
Aus373 is a typical broad-leaved variety of autumn rice. It has been reported that the Aus373 broad-compatibility gene is located on chromosome 7 and linked to RFLP markers RZ488 and RG511. The gene was temporarily named Sa (t) n [3]. On this basis, this study made a preliminary attempt to locate the Aus373 broad-compatibility gene on the RFLP map. The genetic effects of S5 and Sa (t) were analyzed. In the Aus37 / reincarnation 422 F2 population, the effects of Sn5 and Sa (t) n were essentially the same, showing the characteristics of repeated gene interactions. The estimated 1/16 semi-sterile line in the population is the result of the interaction between the two non-affinitive genes at the wide-compatibility locus. By means of molecular marker-assisted selection, a homozygous recombinant that may have a wide locus gene of two loci was screened. The relationship between Sans and Sa (t) n and the broad-compatibility genes of autumn rice and the prospects of its application to Sa (t) n were analyzed and discussed