Über das Vorkommen von Armillaria‐Arten und‐Klonen in benachbarten Koniferenbeständen, Mischbeständen und in Laubwald1

Occurrence of species and clones of Armillaria in spruce stands, mixed stands and hardwood stands in close neighbourhood. From Armillarid rhizomorphs (collected around trees) and from spruce butt rots, isolates of the diploids were made. In pairings between the diploid isolates and haploid testers from the five (European) biological species (BULLER phenomenon) the mating reactions often were not clear enough to identify the diploids. So carpophores were raised from the isolates and single spore cultures were obtained. In pairings with the haploid testers Armillaria borealis, A. bulbosa and A. bulbosa were identified. Usually more than one Armillaria species and from each species more than one clone occurred in each stand.