Biosystematics ofCoriolus hirsutusandC. pubescens. I. Interfertility studies

摘要

Interfertility tests between Alberta collections identified asCoriolus hirsutus, C. pubescens, C. velutinus, C. zonatus, andC. versicolorhave shown that there are only two distinct species of this complex in Alberta, each with a range of morphological variation. Both these species, which are being calledCoriolus hirsutusandC. pubescens, have the tetrapolar type of fertility. Isolates of basidiocarps from Sweden identified asCoriolus hirsutuswere intersterile with Alberta isolates of this species, which suggests the existence of two different species. Cultures ofC. versicolor(Ontario) were unilaterally dikaryotized byC. hirsutusand to a lesser extent byC. pubescens, indicating very close relationship. Dark pigment lines frequently formed between paired isolates of both distantly related and closely related cultures, indicating that it is not mating-type factors which control pigment formation in the contact zone.