为了探索非豆科植物与根瘤菌联合共生体系建立条件和效能,我们选用了二种慢生型根瘤菌(江豆根瘤菌32H_1和大豆根瘤菌005)及二种快生型大豆根瘤菌(191和2047)与烟草愈伤组织共培养,以研究其联合条件和固氮酶活性,简报如下: In order to explore the establishment conditions and potency of joint symbiosis system of non-leguminous plants and Rhizobium, two kinds of slow-growth rhizobia (Rhizobium japonicum 32H_1 and Rhizobium japonicum 005) and two rapid-growth soybean rhizobia (191 And 2047) were co-cultured with tobacco callus to study their combined conditions and nitrogenase activity, briefly presented below: