华中和华南的岛生异担子菌T生物种的鉴定研究

在湖南省衡山和江苏省紫金山的马尾松上发现岛生异担子菌,并从11号标本中分离到单孢菌株。在每个标本中随即选取两个或一个单孢菌株分别与已知的岛生异担子菌的T、N和Y生物种的单孢菌株进行融合性交配。实验表明这11号标本都是岛生异担子菌T生物种。T生物种的岛生异担子菌在中国广泛分布,且通常生长在马尾松上。N和T生物种具有相似的形态特征,Y生物种与N和T生物种的主要形态区别是具有较小的孔口和担孢子。

INTERSTERILITY GROUP T OF HETEROBASIDION INSULARE IDENTIFIED FROM CENTRAL AND EASTERN CHINA

Specimens of Heterobasidion insulare sensu lato were collected from Pinus massoniana in Heng Mts. of Hunan Province (central China) and in Zijin Mts. of Jiangsu Province (eastern China). Pure cultures were isolated from 11 specimens and identified in mating tests by pairing them with homokaryotic tester strains of the T (Taiwan), N (North) and Y (Yunnan) intersterility groups of H. insulare. All the specimens proved to belong to the T group. This group seems to have a wide distribution in southeastern parts of China, and it occurs mostly as a saprotroph on Pinus marssoniana. Groups T and N are very similar in basidiocarp morphology while group Y shows a more differentiated morphology, in spite of the fact that the groups N and Y are very closely related, as concluded from interfertility tests and DNA studies.