拉萨地区青稞籽粒真菌区系分析

在拉萨地区尼木县、林周县采集当年的青稞籽粒,各随机取6000粒进行培养分离。尼木、林周2县的样品籽粒内带菌率分别高达76.9%、87.4%。培养分离出真菌5931和7293株,其中产孢真菌分别为3894株和5205株,鉴定分属于15个属,4个亚门。2县青稞籽粒的真菌优势种都是C ladosporium、Alternaria和Phoma,优势种总和分别占尼木、林周2县产孢真菌的81.25%、85.94%。2县单颗籽粒带菌以1株居多,分别占尼木县和林周县带菌籽粒的72.89%、66.46%。

Floral analysis of epiphyte/fungi from hullessbarley seeds in Lhasa

From 6000 this year hullessbarley seeds selected at random respectively from Nimu county and Linzhou county in Lhasa,fungus were isolated and determined.Among them,the amount of fungi in seeds were 76.9 % and 87.4 %.5931 and 7293 fungi isolates of the seeds from the two counties were cultured and the spore-produce fungus were 3894 and 5205 respectively,which were identified into 15 generas,4 subphylums.Cladosporium,Alternaria and Phoma are the dominant species of the two counties and the sum of them account for 81.25 % and 85.94 % in spore-producing fungus,respectively.Seeds which carried one fungi account for 72.89 % and 66.46 %,respectively,in fungi-carried seeds from Nimu and Linzhou.