BOX-PCR指纹图谱1. were characterized by numerical taxonomy, 16S rDNA PCR-RFLP analysis and BOX-PCR fingerprinting to describe the phenotypic and genetic diversity. 【方法】采用表型数值分类、16SrDNAPCR-RFLP分析和BOX-PCR指纹图谱分析的方法对北方地区的甘草根瘤菌进行表型、遗传多样性分析。