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

摘要: 分别于广西壮族自治区南宁地区11个县(乡)采集土壤腐霉(Pythium)标样106个，研究分离纯化出172个腐霉菌株，其中有2个新种，为镰雄腐霉Pythium falciforme sp．nov．和南宁腐霉P．nanningense sp．nov．；6个广西新记录种，为刺器腐霉P．acanthophoron Sideris、昆明腐霉P．kunmingense Yu、畸雌腐霉P．irregulare Btfisman、奇雄腐霉P．middletonii Sparrow、缓生腐霉P．tardicrescens Vanterpool和终极腐霉P．ultimum Trow。优势种为瓜果腐霉P．aphanidermatum (Edson)Fitzpatrick和刺腐霉P．spinosum Sawada。

Abstract: From 1998～2001，172 genus Pythium strains had been found fmm 106 specimens collected in 11 counties of Narming，Cmangxi 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 Vanterpo ol 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 ．