In the RAPD profiles generated by 13 random decamer primers, there were no RAPD bands sharing by all the 29 isolates of 17 species, which revealed the abundant polymorphism among the tested isolates.

• 13个随机引物对17种拟茎点霉共29个菌株的扩增图谱中，没有发现所有拟茎点霉菌株的共有带，同时表现出种间差异大于种内差异的相同趋势，表明了供试菌株间存在着丰富的多态性。