| 观赏凤梨叶斑病病原鉴定及其防治药剂筛选 |
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| 引用本文： | 冯淑杰,梁慧敏,张荣,刘爱媛,刘海涛.观赏凤梨叶斑病病原鉴定及其防治药剂筛选[J].安徽农业科学,2008,36(22). |
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| 作者姓名： | 冯淑杰 梁慧敏 张荣 刘爱媛 刘海涛 |
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| 作者单位： | 华南农业大学园艺学院,广东广州,510642 |
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| 摘 要： | 目的]为了明确引起观赏凤梨叶斑病的病原和选择有效的药剂进行防治。方法]采集具有典型症状的病害标本,根据柯赫氏法则分离病原物,并观察病原物形态特征;同时,分别测试了5种供试杀菌剂在2种不同浓度下对病原菌的抑菌作用。结果]结果表明,半知菌亚门的炭疽菌(Colletotrichum sp.)和弯孢霉(Curvularia sp.)均能够引起观赏凤梨叶斑病。70%甲基托布津可湿性粉剂和50%施保功可湿性粉剂可有效地抑制炭疽菌菌丝的生长;而80%大生可湿性粉剂和50%施保功可湿性粉剂则可有效抑制弯孢霉菌丝的生长。结论]要同时防治炭疽菌和弯孢霉导致的凤梨叶斑病,应该选用50%施保功可湿性粉剂。
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| 关 键 词： | 观赏凤梨 叶斑病 病原鉴定 杀菌剂筛选 |
Identification of Pathogen the Leaf Spot Disease on the Ornamental Pineapple and Screening of Fungicides |
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| FENG Shu-jie et al.Identification of Pathogen the Leaf Spot Disease on the Ornamental Pineapple and Screening of Fungicides[J].Journal of Anhui Agricultural Sciences,2008,36(22). |
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| Authors: | FENG Shu-jie |
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| Abstract: | Objective] The research aimed to determine the pathogen caused by the leaf spot disease of ornamental pineapple,and screen effective fungicides.Method] Disease samples showed typical symptom were collected and pathogen was isolated based on Koch's rule.The fungi were identified by morphological characters.And 5 fungicides were selected and used for controlling the disease.Result] The results showed that the leaf spot disease of ornamental pineapple was caused by Colletotrichum sp.and Curvularia sp..The 70% Thiophanate-methyl and 50% Prochloraz could effectively inhibit the mycelial growth of Colletotrichum sp.,and 80% Dithane and 50% Prochloraz had strong inhibition effects to the mycelial growth of Curvularia sp.Conclusion] If simultaneously controlling Colletotrichum sp.and Curvularia sp.,50% Prochloraz should be chose. |
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| Keywords: | Ornamental pineapple Leaf spot disease Pathogen identification Screening of fungicides |
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