European Journal of Forest Pathology (1998) 28, 1-9

N. La Porta, K. Apostolov and K. Korhonen (1998)
Intersterility groups of Heterobasidion annosum and their host specificity in Bulgaria
European Journal of Forest Pathology 28 (1), 1-9
Abstract: The occurrence of 46 strains of Heterobasidion annosum from four forest areas in Bulgaria is reported. Three intersterility groups, P, S and F, were identified for the first time in populations of this pathogen in Bulgaria. A strict host specificity of different intersterility groups was observed even in mixed stands. The P group was isolated from Pinus sylvestris and Pinus nigra and occasionally from stumps of Abies alba. It was rare in artificial pine plantations on dry sites, whereas it was more common on more moist sites. The F group caused severe damage on Abies alba but was not found, even as a saprotroph, on admixed pines. This is the first report of the F group on Abies alba in the Balkans. The S group was found only on Picea abies.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Nicola La Porta, Kari Korhonen

Research topic(s) for pests/diseases/weeds:
identification/taxonomy
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Heterobasidion annosum	Spruce (Picea)	Bulgaria
	Heterobasidion annosum	Pine (Pinus)	Bulgaria
	Heterobasidion annosum	Fir (Abies)	Bulgaria