The 16s rdna pcr - rflp revealed 9 different genotypies among the 12 isolates . the patterns of slow - growers were markedly different to that of fast - growers . ccbau61116x ccbau41069 ccbau23168 had identical restriction patterns 16srdnapcr - rflp聚类分析结果在90的相似性水平上把慢生型根瘤菌分成7群，也证明了葛藤根瘤菌种水平的多样性。
