At the similarity of 69 % , strains tested were separated from b . japonicum and could be further divided into a , b , c , d and e subgroup at the similarity of 84 % 树状图谱显示在相似性69的水平上，供试花生根瘤菌与bj分离而单独成群。在84的水平上，供试花生根瘤菌聚为5个亚群。
At the similarity of 65 % , all slow - growing strains could be divided into i and ii groups which were further divided into la , ib , ha , lib and lie subgroups in the similarity of 78 % 在78的水平上各群又可进一步划分为不同的亚群，其中群分为a和b两个亚群：群分为a 、 b和c三个亚群，参比菌株bj和be聚成c 。
Results of rep - pcr tests shown that at the similarity of 60 % peanut isolates were separated from bj which indicated that there existed phylogenetic difference between peanut isolates and bj Rep - pcr分析结果表明在60的相似水平上，花生根瘤菌与bj分离，进一步表明供试花生根瘤菌在系统发育和分类地位上与b . japonicum仍存在差异。
