摘要:

Close relationship betweenPeniophora heterocystidia Burt,P.mutata(Peck) Höhn. & Litsch., andP.populnea(Peck) Burt is indicated by similarities in their fruit bodies, but specific separation is warranted by differences in color and thickness of fruit bodies and in shape and relative numbers of cystidia and gloeocystidia. In addition,P.populneais restricted to the host genusPopulusandP.heterocystidiato broad-leaved trees other thanPopulus. This separation is confirmed by recognizable differences in the cultural characters of the three species and by interfertility tests. Pairings between monosporous mycelia from individual fruit bodies have shown that all three species are hermaphroditic, self-sterile, and interfertile, and of the bipolar type of interfertility. Pairings between monosporous mycelia from fruit bodies of the same species have shown complete or partial fertility, while pairings between fruit bodies of the different species have demonstrated complete sterility. Cultures from fruit bodies typical ofP.allescheri(Bres.) Sacc. & Syd. behaved like those from typicalP.mutata, confirming the combination of the two species. In interfertility tests between cultures ofP.mutata, isolates fromPopuluswere completely interfertile, as were those from hosts other thanPopulus, but pairings between isolates fromPopulusand other hosts exhibited various degrees of incompatibility. Sizes of basidiospores and conidia in collections and cultures ofP.mutatafromPopuluswere slightly larger than in collections from other hosts, but differences were not considered sufficiently great to justify the establishment of a variety. Conidiophores and conidia are produced abundantly in cultures of all the species but were found in nature only in two collections ofP.heterocystidia.

ISSN:0008-4026    

DOI:10.1139/b52-054

出版商:NRC Research Press    

年代:1952

数据来源: NRC