苍山斜阳峰火烧迹地捕食线虫真菌资源调查

Investigation on Nematode-trapping Fungi in Burned Areas of Xieyang Peak in Cangshan Mountain

[目的]研究苍山斜阳峰火烧迹地捕食线虫真菌。[方法]从云南大理苍山地区斜阳峰6块火烧迹地的华山松、云南松松树根际土共采集了480份土样,采用诱饵平板法对土样中捕食线虫真菌资源进行分离并对其进行了鉴定。[结果]共分离出79株菌株,经鉴定有2个属6个种。捕食线虫真菌在将军洞后山火烧迹地分布最广,80份土样共计检出17次。6块火烧迹地中,少孢节丛孢(A.oligospo-ra)的检出率最高,为4.79%;其次是弯孢节丛孢(A.musifomis)和椭圆单顶孢(M.ellipososporum),检出率分别为3.96%和3.75%。[结论]为松材线虫的生物防治积累了菌种资源。

[Objective] The aim was to study the nematode-trapping fungi in burned areas of Xieyang Peak in Cangshan Mountain.[Method] Total 480 soil samples were collected from rhizosphere soil of armand pine and Yunnan pine of 6 burned areas of Xieyang Peak in Cangshan Mountain.Nematode-trapping fungi in soil samples were isolated by the method of baited plates and identified.[Result] Total 79 strains were isolated,and they were 6 species belonged to 2 genera.The nematode-trapping fungi were the most widely distributed in burned area of Atoyama of General＇s cave,and 80 soil samples were totally detected for 17 times.Among 6 burned areas,A.oligospora had the highest detection rate,with 4.79%;next came A.musifomis and M.ellipososporum,with detection rates of 3.96% and 3.75%,respectively.[Conclusion] The research accumulates strain resources for the biological control of Bursaphelenchus xylophilus.