Abstract:Orchidaceous mycorrhizae which mainly parasitizes on orchid seeds and root systems is one kind of endomycorrhizae. The recent advances in the taxonomy of orchidaceous mycorrhizal fungi and diversities of fungal resources were reviewed, and morphology of orchid mycorrhizae as well as their effects on orchid plants were discussed. The recent studies showed that most orchid mycorrhizae belong to Basidiomycota and Deuteromycotina fungi, and some belong to Ascomycota. There are two modes for the formation of orchid mycorrhizae, one is the infection of orchid seeds and the other is the infection of orchid radicles. Orchid mycorrhizae has certain impacts on germination of orchid seeds and growth of orchid seedlings.
