利用近２０年来８０余个亲本、１２００组合（次）的资料，研究甘薯常用亲本的自交不亲和性及不亲和群内和群间的亲和性。结果表明，多数常用亲本自交不亲和，个别品种与以往报道差别较大，徐薯１８等自交结实率较高。异群间杂交亲和性顺序与日本户刈义次等的报道较为一致。含有近缘野生种血缘的南丰、徐５－１３８等存在着单向亲和性。 Based on the data of more than 80 parents and 1200 combinations in recent 20 years, the self-incompatibility of common parents and the affinity of non-affinities and inter-populations were studied. The results showed that the most commonly used parents self-incompatibility, individual varieties and previous reports vary greatly, Xushu 18 self-bred high seed setting rate. The order of affinity between the hybrids was consistent with that of the Japanese household. NanFeng, Xu 5-138, which contain the kinship of wild relatives, have unidirectional affinity.