CYTOKININ CONTENT IN NEEDLES OF NORWAY SPRUCE (PICEA-ABIES [L] KARST)INOCULATED WITH 2 STRAINS OF THE ECTOMYCORRHIZAL FUNGUS THELEPHORA-TERRESTRIS (EHRH) FR

Two strains of the ectomycorrhizal fungus Thelephora terrestris showed different levels of the same types of cytokinins in their culture fil trates. Cytokinin content in needles of inoculated versus noninoculate d Norway spruce seedlings were higher regarding Isopentenyladenosine-5 -Phosphate, Zeatin, Zeatin-Riboside and isopentenyladenosine, while Is opentenyladenine did not show any differences. The strain of the same fungus, which produced higher amounts of cytokinins in pure cultures, influenced more the cytokinin content of the needles (regarding IPA5P, Z and ZR), although the differences were smaller than in pure culture exudates.