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The root fungi in pure cultures
M0 Ro atrovirens
The behavior toward various sources of nitrogen
7 other sections not shown
3/4 natural Aerial hyphae Amanita Amanita muscaria ammonia ammonium ammonium chloride amount asparagine assimilation atrovirens bacteria Boletus luteus Boletus variegatus brown cent close of experiment Color coniferous coniferous trees Cortinarius elegans Figure flasks forests formed free atmospheric nitrogen fungal fungal symbionts fungus gelatin higher symbionts humus humus layer hydrogen-ion concentration Hymenomycetes hyphae inoculated inorganic investigated length M. R. Abietis M. R. sylvestris malt extract malt-agar Melin ment mull soils mycelium mycor mycorrhiza mycorrhizal formation needles nitrate nitrogen content nitrogen-free substrata nucleic acid nutrient solution one-sided parasitism organic nitrogen compounds peptone phosphate phosphatides Picea Abies pine and spruce pine seedlings Pinus montana Pinus sylvestris produced pure cultures raw-humus soils reaction Rhisoctonia sylvestris rhiza salts seeds source of carbon source of nitrogen species sporophores spruce seedlings sterilization substratum symbionts symbiosis Table temperature three-year-old true mycorrhizal fungi urease vegetative periods vestris virulence yellowish