【作者】 何苏琴； 金秀琳； 王生荣；

【Author】 HE Su-qin~(1,2) JIN Xiu-lin~2 WANG Sheng-rong~1 (1.College of Prataculture,Gansu Agricultural Universit,,Lanzhou 730070,China 2.Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China)

【机构】 甘肃农业大学草业学院； 甘肃省农业科学院植物保护研究所；

【摘要】 自马铃薯干腐病罹病薯块上分离得到一株大量产孢的砖红色轮枝菌状真菌。该菌在PSA平板上25℃培养6d,菌落砖红色,菌落边缘菌丝白色,因大量产孢而呈现出深浅不同的环纹,随培养时间延长,菌落颜色逐渐加深变暗,呈锈红色。原始自然基质上的孢梗淡红褐色,主梗色深,小梗色稍淡;孢子球呈红褐色,顶孢子球直径14.94～39.84μm;主梗直立,轮生3～8层侧枝,侧枝可再生1～2次分枝;每层轮枝上可轮生3～6个小梗或侧枝;主梗118.8～396.0μm×2.99～4.98μm;主梗有分隔5～9个;瓶状小梗12.45～26.15μm×1.99～2.99μm;分生孢子无色,卵圆形至椭圆形,大小4.48～7.47μm×2.49～3.74μm。依据其培养特征及形态特征,将其鉴定为白黄笋顶孢霉Acrostalagmus luteo-albus(Link:Fr)Zare,W.Gams& Schroers。回接试验表明,该菌对马铃薯块茎无致病性。与7种植物病原真菌的对峙培养试验表明,该菌对硫色镰刀菌、草莓鲜壳孢、西瓜壳二孢、立枯丝核菌、茄链格孢、嗜果刀孢、芸薹生链格孢有明显的抑菌或溶菌作用。更多还原

【Abstract】 An unusual fungal collection was obtained from potato tuber infected with dry rot disease.This collection produced abundant condia,verticallate conidiophores,and brick-red colony.Inoculation test showed that it was non pathogenic to potato tuber.Morphological characteristics indicated that the fungus was Acrostalagmus luteo-albu(Link:Fr)Zare,W.Gams & Schroers.The results of antagonistic test showed that the fungus was fungistatic to Fusarium sulphureum,Ascochyta citrullina,Rhizoctonia solani,Alternaria solani,Zythia fragariae, Clasterosporium carpophilum,and Alternaria brassicicola.更多还原