中文摘要：

采用微波辐照，对柠檬形克勒克酵母（Kloeckera apiculata）进行诱变处理，确立了辐照的最佳时间为50s。选育到1株拮抗柑橘青霉病抑菌活性提高16．90％、生物量提高6．96％的菌株W50．56；选育到1株拮抗柑橘绿霉病抑菌活性提高17．38％、生物量提高5．86％的菌株W50-47。所选育的菌株经多次传代，遗传性状十分稳定。

英文摘要：

Microwave irradiation was adopted to carry out mutation treatment on Kloeckera apiculata （KA） , and it was set up the optimal time was 50 s. One antagonistic KA mutant W50-56 against citrus blue mold was bred with 16.90% increment of pathogen-inhibiting activity and 6.96% increment of biomass. Another antagonistic KA mutant W50-47 was bred with 17.38% and 5.86% increase in blue mold inhibiting activity and biomass respectively. And the two mutants showed very stable genetic determinant after transferring for several generations.