Characteristics and diversity of Rhizoctonia spp. population in soil of selected forest bare-root nurseries in Poland

Fourty three Rhizoctonia isolates obtained from four forest nurseries situated in the Wielkopolska region (central-western Poland) has been proved as multinucleate (anamorph – R. solani). They represented four anastomosis groups (AG): AG1-IC, AG-5, AG4-HG2 and AG2-1. Three AGs were found in Jarocin nursery (AG-5, AG4-HG2 and AG2-1), two in Łopuchówko (AG-5 and AG4-HG2) and one in Konstantynowo (AG1-IC) and Pniewy (AG-5). All isolates were highly pathogenic to Scots pine (Pinus sylvestris) seedlings and pose a large damping-off threat to the seedlings in the nurseries with single AG and in those where more AGs exists.

Abstract licence: CC BY

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