广西南宁地区腐霉的研究

Studies on the new and dominant species of genus Pythium in Nanning Region of Guangxi.

分别于广西壮族自治区南宁地区 1 1个县 (乡 )采集土壤腐霉 (Pythium )标样 1 0 6个 ,研究分离纯化出 1 72个腐霉菌株 ,其中有 2个新种 ,为镰雄腐霉Pythiumfalciformesp .nov .和南宁腐霉P nanningensesp .nov .;6个广西新记录种 ,为刺器腐霉P acanthophoronSideris、昆明腐霉P kunmingenseYu、畸雌腐霉P irregulareBuisman、奇雄腐霉P middletoniiSparrow、缓生腐霉P tardicrescensVanterpool和终极腐霉P ultimumTrow。优势种为瓜果腐霉P aphanidermatum (Edson)Fitzpatrick和刺腐霉P spinosumSawada。

From 1998～2001, 172 genus Pythium strains had been found from 106 specimens collected in 11 counties of Nanning, Guangxi Zhuang Autonomous Region of China. Among them, Pythium falciforme sp.nov. and P nanningense sp.nov. are reported here as new species. 6 species, namely P acanthophoron Sideris, P irregulare Buisman, P kunmingense Yu, P middletonii Sparrow, P tardicrescens Vanterpool and P ultimum Trow are new records to this region. P aphanidermatum (Edson) Fitzpatrick and P spinosum Sawada are the dominant population. New species are described fully and illustrated.