独龙江水生丝孢菌资源调查

Investigation on the Resources of Freshwater Hyphomycetes of the Dulong River

目的:调查独龙江水生丝孢菌资源,了解其多样性特征。方法:从独龙江中段(海拔1285-1692m)采集沉水腐木90份,采用保湿培养法对水生丝孢菌进行培养,基于形态学特征对水生丝孢菌进行鉴定。结果:通过形态学特征比较,共鉴定出水生丝孢菌38属49种。结论:独龙江水生丝孢菌资源丰富,多样性指数为3.56,其中Sporidesmiella(20%)、Ellisembia(8.9%)、Helminthosporium(6.7%)、Minimelanolocus(5.6%)的出现频率相对较高。

Objective： To investigate diversity and resourses of hyphomycetes in Dulong River. Meth- od ： 90 samples were collected from middle of Dulong River（ Altitude 1285m - 1692m） in May 2015, using the moisturizing incubation method to incubate the freshwater hyphomycetes and identified them under the morphological characters. Results： Under the morphological characters, the investigation indicated that there are 38 genera 49 species of hyphomycetes. Conclusion： There are high richness and diversity of freshwater hyphomycetes in Dulong River. The index of diversity is 3.56. Among the genera found in this area, Sporidesmiella （ 20% ）、Ellisembia （ 6.7% ） 、Helminthosporium （ 6.7% ） 、Minimelanolocus （ 5.6% ） appears high frequency relatively.