On 25th, January, through tissue isolation, pure mother strain of wild Coral fungus collected by Puwa Village, Fangshan District, Beijing was obtained, and formula of mother strain was also singled out after formula experiment.

According to know, the experiment determined different Nitrogen and Carbon sources as influence factors, and 8 formula combinations were designed. After the inoculation, technical staffs evaluated on aspect of growth speed, growth tendency and uniformity of mycelia, finally a mycelia formula which highlights quick growth speed, even and dense mycelia was sorted out. Now, it is used for production and preservation and is expected to be improved via subsequent experiment.