Tomato Seedling Culture by Inoculating Arbuscular Mycorrhizal Fungi and Ralstonia Solanacearum Control
LONG Liang-kun1,LI Zhi-kun1,YAO Qing2,WANG Yan3,ZHU Hong-hui1*
1Guangdong Institute of Microbiology,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application,Guangdong Open Laboratory of Applied Microbiology,Guangzhou 510070,Guangdong,China；2College of Horticulture,South China Agriculture University,Guangzhou 510642,Guangdong,China；3Guangdong Science & Technology Library,Guangzhou 510070，Guangdong,China
Abstract：In pot experiments,tomato seedlings were inoculated with arbuscular mycorrhizal fungi Glomus versiforme(AM-1)and Glomus spp.(AM-2).The effects to mycorrhizal root percentage which under different substrate conditions or at different inoculation time were analyzed,respectively.The results indicated that the highest percent of micorrhizal root could be obtained by substrate of vermiculite and soil mixture at the ratio of 1∶3 in volume.No significant difference of mycorrhizal root percent was observed between inoculating at seeding stage and at oneleaf stage,but a significant decrease of mycorrhizal root percentage was present when inoculating at twoleaf stage.In pot experiment under greenhouse conditions,tomato seedlings with higher percentage of mycorrhizal root could delay the occurrence of tomato bacterial wilt(Ralstonia solanacearum).but at the later stage,the state of illness would become aggravate.