【摘要】 对陕西省不同地区杨树溃疡病病原菌研究显示,在关中地区,杨树溃疡病病原菌包括聚生小穴壳(Dothiorella gregaria Sacc.)、金黄壳囊孢(Cytospora chrysosperma Fr.)、杨细盾霉(Co-niothyrium populinum Schulz.et Sacc.)和镰刀菌(Fusariumsp.)4种真菌;陕北地区杨树溃疡病主要由C.populinumSchulz.et Sacc.及C.chrysosperma Fr.所致;陕南杨树溃疡病发生少。接种试验表明,聚生小穴壳和杨细盾霉在各地理菌系之间存在着培养性状与致病性分化,聚生小穴壳致病性较强,杨细盾霉致病性较弱。更多还原

【Abstract】 The studies showed that poplar canker,caused by pathogenic fungi including Dothiorella gregaria Sacc.,Cytospora chrysosperma Fr.,Coniothyrium populinum Schulz.et Sacc.and a few Fusarium sp.,mainly distributed in middle Shaanxi,poplar canker mainly caused by C.populinum Schulz.et Sacc.and C.chrysosperma Fr.in northern Shaanxi,and there were few poplar canker caused by D.gregaria Sacc.in southern Shaanxi.Inoculating tests proved that D.gregaria Sacc.showed strronger pathogenicity,C.populinum Schulz.et Sacc.Had weaker pathogenicity,and both showed culture character and pathogenic differentiation in geographical isolates.更多还原