P. Tsopelas et K. Korhonen, HOSTS AND DISTRIBUTION OF THE INTERSTERILITY GROUPS OF HETEROBASIDION-ANNOSUM IN THE HIGHLANDS OF GREECE, European journal of forest pathology, 26(1), 1996, pp. 4-11
The intersterility groups of 127 pure cultures of H. annosum collected
from different host trees in 12 mountain areas In Greece were identif
ied. The F group commonly caused butt rot on the fir species Abies cep
halonica and Abies borisii regis. It was the only type of H. annosum f
ound in pure fir forests. The P group caused serious root rot in Pinus
sylvestris stands in north-eastern Greece. In more southern mountain
areas it often colonized stumps of Pinus nigra bur seldom killed this
tree species. The S group was found in natural forests of Picea abies
in northern Greece, causing butt rot of spruce. In mixed forests, the
intersterility groups of H. annosum were found relatively often in stu
mps of tree species other than their main hosts, although some host pr
eference seemed to occur also in stump colonization.