摘要
从无症和显症的板栗种仁上经组织分离法共分离获得22株真菌,其中16株经鉴定为11个属真菌:短梗霉属(Aureobasidium sp.)、链格孢属(Alternaria sp.)、茎点霉属(Phoma sp.)、青霉属(Penicillium sp.)、聚端孢属(Trichothecium sp.)、壳梭孢属(Fusicoccum sp.)、丝核菌属(Rhizoctonia sp.)、毛霉属(Mucor sp.)、刺盘孢属(Colletotrichum sp.)、葡萄孢属(Botrytis sp.)和镰刀菌属(Fusarium sp.),另有6个未知菌株有待鉴定,链格孢属、镰刀菌属、聚端孢属和壳梭孢属为致病优势菌株。回接试验表明,致腐真菌在板栗有伤时容易侵入种仁引起发病,在板栗无伤时多数菌株不能侵入,个别菌株能侵入,但侵染率低,病情不严重。不同处理对板栗贮藏期防腐试验得出,防腐处理虽然能够清除种子表面的病菌,但不能清除种子内部的病原菌,其防效不明显。
Twenty-two strains of pathogenic fungi were isolated from the decayed and non-symptom seeds of Chinese chestnut in Huairou, Beijing, China. Sixteen strains were identified and fell into 11 genera, i.e. Aureobasidium sp. , Alternaria sp. , Phoma sp. , Penicillium sp. , Trichothecium sp. , Fusicoccum sp. , Rhizoctonia sp. , Mucor sp. , Colletotrichum sp. , Botrytis sp. and Fusarium sp.. Six strains were not identified yet. Among the pathogens, Alternaria sp. , Trichothecium sp. ,Fusicoccum sp. and Fusarium sp. had higher isolating rate than others. The inoculation tests showed that Alternaria sp. , Fusarium sp. and Fusicoccum sp. could only infect the injured seeds of Chinese chestnut, Trichothecium sp. could infect both injured and non-injured seeds of chestnut.
出处
《北京农学院学报》
2006年第4期33-36,共4页
Journal of Beijing University of Agriculture
基金
北京市农委资助项目(板栗产业配套技术示范-板栗贮藏期病害的防治技术研究)
关键词
板栗
真菌
腐烂病
鉴定
侵染性
Chinese chestnut
fungi
rot disease
identification
infection
作者简介
王海霞，女，1979年出生，硕士研究生，研究方向：植物病理学
通讯作者：魏艳敏，女，副教授，研究方向：植物病害防治
