Investigations on Heterobasidion annosum s.lat. in central and eastern Asia with the aid of mating tests and DNA fingerprinting

摘要: To investigate the taxonomy of Heterobasidion in Eurasia, 49 specimens belonging to H. annosum sensu lato from Asia were identified with aid mating tests. Most originated north-eastern and south-western China Altai region southern Siberia, but a few isolates Kirghizia, Japan India also tested. In addition tests, material was investigated DNA fingerprinting. stricto only region. Homokaryotic other specimens, except Indian ones, sexually compatible parviporum, they showed high degree compatibility abietinum North American S group. The SW (eastern Himalayas) mated about equal frequency European strains parviporum abietinum. However, fingerprinting that these more closely related hence tentatively included this species. group distant Eurasian taxa. Four old weakly members s.lat. According species concept presented, distribution extends western Europe through Siberia northern China, eastern Himalayas. s.str. is so far outside Europe, Europe.