Abstract: Japanese apricot（Prunus mume Sieb. et Zucc）is a fruit crop with gametophytic self-incompatibility. Some self-compatible varieties appeared during long-term evolution. In this study，a typical self-incompatibility cultivar‘Nanko’and self-compatible cultivar‘Koshinoume’of Japanese apricot were taken as controls. We identified the self-compatibility of two cultivars‘Sichuan Baimei’and ‘Changnong 17’native to China through field self-pollination test，the results demonstrated that the rate of fruiting set were 30.73% and 16.27%，respectively. Further analysis of AS-PCR showed that there were insertion mutation in pollen SFB genes of the two cultivars，which possibly resulted in self-compatibility of these two cultivars.

Key words: Japanese apricot, self-compatibility, identification, AS-PCR