Differences were found among 8 strains from RAPD analysis.Out of 23 random primers, 11 were polymorphic.Altogether 59 RAPD bands were found and the polymorphic rate was 47.5%.

• 应用23个随机引物对白粉病菌8个不同生理小种进行RAPD分析，其中11个引物的扩增带型在不同生理小种间出现差异，共扩增出59条谱带，多态性为47.；5%25。