Study on natural development of arbuscular mycorrhiza in several species of wild flowers

In the symbiotic association of plant and fungi,arbuscular mycorrhiza(AM),which is formed between plants and Glomales fungi,has the widest distribution in the nature.A investigation(of the AM) was carried out among six wild flowers species in Shandong province on mycorrhizal colonization,natural development of typical structure,spore density in rhizospheric soil,relative abundance and frequency of AM fungi.Results showed that all the roots were colonized by AM fungi,typical a vesicles were observed and spore density of AM fungi in rhizospheric soil was very abundant in this survey,five genera AM fungi were identified,Acaulospora and Glomus were likely the dominant proportion in the(rhizospheric) soil of AM fungi of wild flowers.