莲瓣兰菌根真菌的初步研究

对莲瓣兰的菌根结构和真菌类群进行了初步研究，以期达到保护莲瓣兰种质资源，开发和利用莲瓣兰的目的。采用徒手切片，在光学显微镜下观察菌根的基本结构，并对莲瓣兰的菌根组织进行真菌分离。莲瓣兰具有典型的兰科植物菌根构造，在光学显微镜下可以观察到菌根真菌从根被侵入，通过外皮层通道细胞进入到皮层薄壁组织，在皮层薄壁细胞内形成菌丝团。通过三次分离，共得到196个菌株，这些真菌绝大多数属于半知菌和子囊菌，共计29属，其中色串孢属（Torula）占30，10％，花顶孢属（Idriella）占11．22％，为绝对优势菌。

A Preliminary Study of Mycorrhiza Fungi of Cymbidium lianpan Tang et Wang

Microstructure of mycorrhiza and fungal species were studied. Observation on the microstructure of mycorrhiza of Cymbidium lianpan Tang et Wang demonstrate that it has the typical mycorrhizal structure of orchids. Mycorrhizal fungi enter the velamen and exodermis, invade the cortical tissue by the exodermal passage cells and then form pelotons. Isolation has been carried out three times and 196 strains have been isolated. These belong to the Classes Fungi Imperfecti and Ascomycete,together 29genus; of these, the superior genus are Torula ,account for 30.10% and Idriella, occupy 11.22%.