Cytological Studies on the Process of Armillaria Mellea Infection Through the Sclerotia of Grifola Umbellata Factors Influencing Formation of Sclerotia in Grifola umbellate (Pers.) Pilát Under Artificial Conditions Characterization of Sclerotial Formation from Hyphae of Grifola umbellata Discovery and Application of the Companion Fungus Related to Sclerotial Formation from Hyphae of Grifola umbellata Effects of winter broad irrigation on the vigor and pathogenicity of sunflower sclerotia in soils Rapid detection and quantification of Verticillium dahliae microsclerotia in soil Determination of Sugar Components in Wild and Cultured Sclerotia of Grifola umbellata (Pers. ex Fr.) Pilat at Differents Ages Physicochemical properties of medicinal fungus Polyporus umbellatus sclerotial exudate