Abstract: In order to control Camellia oleifera anthracnose with arbuscular mycorrhizal fungi (AMF), the effects of AMF on Camellia oleifera anthracnose were investigated. The parameters such as AMF spore density, richness, diversity index, mycorrhizal colonization rate of C.oleifera and the disease occurrence were studied by wet screening precipitation and AMF colonization staining methods. Results showed that there were significant differences in AMF spore density and colonization rate between diseased and healthy C.oleifera roots. The spore density, richness and colonization rate of AMF were negatively correlated with the incidence rate and disease index of C.oleifera anthracnose, and the diversity index was also negatively correlated with the incidence rate and disease index of C.oleifera anthracnose. It showed that the higher the spore density, mycorrhizal colonization rate, richness and diversity index of AMF, the less the anthracnose of C.oleifera.

Key words: Camellia oleifera anthracnose, arbuscular mycorrhizal fungi (AMF), fungal diversity, richness index, biological control