从福建、广东、海南岛的木麻黄根瘤中分离到16株内生菌,它们都具有Frankia菌的典型形态特征。回接鉴定表明,除4株不侵染原寄主植物外,其余12株均具有侵染能力。但各菌株的侵染能力不同,这些菌株在培养基上的培养特征有一定的差异,实验菌株在BAP培养基上生长最好,在Jan Blom、Qmod等培养基上生长较差。 16 strains of endophytic bacteria isolated from the root of Malus hupehensis in Fujian, Guangdong and Hainan Island, all of which have the typical morphological characteristics of Frankia. Back identification showed that, in addition to the four non-infecting host plants, the remaining 12 have the ability to infect. However, the infection ability of each strain was different. The culture characteristics of these strains were different on the culture medium. The experimental strains grew best on BAP medium and poorly on the media of Jan Blom and Qmod.