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将两个复制子（ｒｅｐｌｉｃｏｎ）相同的重组质粒导入快生型大豆根瘤菌中，考察了得到的转移接合子在培养和共生条件下的稳定性。发现带有质粒ＲＫ２ｐａｒ基因的重组质粒ｐＴ２ＴＸ３Ｋ在快生型大豆根瘤菌中无论在培养还是共生条件下都可以稳定存在，而不带有该基因的重组质粒ｐＣＫ３在两种条件下都有一定程度的丢失。
The same recombinant plasmid of two replicons was introduced into fast-growing soybean rhizobia to investigate the stability of the resulting metastasis junction under culture and symbiosis conditions. The recombinant plasmid pT2TX3K with the RK2par gene was found to be stable in fast-growing soybean rhizobium, both in culture and in symbiotic conditions. However, the recombinant plasmid pCK3 without this gene was found to have a certain degree of Lost