AM fungi diversity in the main tree-peony cultivation areas in China
我国洛阳与菏泽牡丹主栽园区AM真菌多样性研究

In order to characterize arbuscular mycorrhizal(AM) fungal resources in the rhizosphere of tree-peony(Paeonia suffruticosa),we collected soil and root samples,and isolated 35 species in five genera of AM fungi from the main tree-peony cultivation areas,Heze and Luoyang of China. Glomus showed the highest relative abundance,followed by Acaulospora. There were differences in species richness,spore den-sity and species diversity of AM fungi between the two regions. Spore density in the rhizospheric soil of tree-peony grown in Heze Zhaolou Tree-peony Garden was highest,while in soil of the Luoyang Cuoli Tree-peony Nursery it was lowest. The species richness in Heze Zhaolou Tree-peony Garden was lowest. Spe-cies diversity in the rhizospheric soil of tree-peony grown in Heze Tree-peony Nursery was significantly higher than in other sampling sites. Glomus geosporum was the dominant species in Heze Zhaolou Tree-peony Garden and Luoyang Wangcheng Garden,while G. constrictum was the dominant species in Heze Tree-peony Nurs-ery,Heze Zhaolou Tree-peony Garden,Luoyang Tuqiao Seedling Nursery and Luoyang Tree-peony Garden. The results suggest that AM fungal diversity is rich in the main tree-peony cultivation areas.