Survey and ecological aspects of presumed ectomycorrhizal fungi associated with black spruce in northern Minnesota

摘要

Twenty-two stands of black spruce,Picea mariana(Mill.) B.S.P., in northern Minnesota were surveyed for ectomycorrhizal fungi. Site selection criteria in black spruce stands included geologic history, soil type, stand origin, age, and productivity. Site preference relationships were noted for several of the 46 species of fungi collected during the 2-year study. Twenty-five isolates were tested in aseptic culture for their ability to form ectomycorrhizae with black spruce seedlings. Ectomycorrhizae were produced byCenococcumsp.,Laccaria bicolor(Maire) Orton,Laccaria laccatavar.moelleriSinger,Rhizopogonsp., andSuillus cavipes(Opat.) Smith amp; Thiers.