【摘要】 对来自中国不同地理来源的20株淡紫拟青霉,及拟青霉属其它菌株4株进行RAPD分析,从RAPD扩增结果可知淡紫拟青霉种内具有丰富的遗传多样型。RAPD扩增指纹图谱有效地分辨不同菌株的基因型。聚类分析结果表明,菌株间差异与地理来源无关,与防治效果正相关;种内的遗传差异要大于种间的差异,说明种内可能含有隐含种;未鉴定菌株为淡紫拟青霉。更多还原

【Abstract】 In the paper, 20 strains of Paecilomyces lilacinus from different geographic origins and other 4 species of Paecilomyces were studied by random amplified polymorphic DNA(RAPD). Distinct genetic diversity among 21 strains of Paecilomyces lilacinus were found. DNA fingerprinting with RAPD-PCR provides high resolution of genotype distribution. Genetic variability of different strains of Paecilomyces lilacinusis related to genetic type, and not to geographic origins. Genetic variability among different strains of Paecilomyces lilacinus were more than different species, maybe there was clostered species.更多还原