中国寄生云杉的顶裂盘菌及其无性阶段

LOPHOPHACIDIUM HYPERBOREUM LAGERB.WIT H APOSTRASSERIA ANAMORPH DISCOVERED IN CHINA

本文报道了寄生在云杉上的中国新记录种顶裂盘菌(Lophophacidium hyperboreumLagerb.);首次发现了这个种的无性型座壳梭孢属(Apostrasseria sp.),证实了融雪前病株针叶上有表生的菌丝和小菌核;查清了它是新疆云杉林中的广布种,引致云杉雪枯病;发现了新分布区,地理分布范围在75°—94°E,37°40′—49°N;发现了新寄主,多土的西伯利亚云杉(Picea obovata Ledeb.)和引进的青海云杉(P.crassifolia Kom.)、川西云杉(P.balfourianaRehd.et Wils.)。

In recent years,snow-blight disease damages spruces seriously in Tianshan, Aletaishan,Western mountain areas of Zhungeer,and Kunlunshan,China.It distributes between longitudes 75°—94°E latitudes 37°40′—49°N,and 1300—2800 meters above sea level.The pa- thogen is identified as Lophophacidium hyperboreum Lagerb.with Apostrasseria anamorph.It occurs in nursery,transplants,and natural forests.It is reported for the first time in China.