| 金边富贵竹黑腐病病原鉴定及防治方法研究 |
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| 引用本文： | 吴赟生,张森泉,高洋,张荣.金边富贵竹黑腐病病原鉴定及防治方法研究[J].安徽农业科学,2011,39(6):3351-3353. |
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| 作者姓名： | 吴赟生 张森泉 高洋 张荣 |
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| 作者单位： | 1. 广东省深圳市农业科技推广中心,广东深圳,518040
2. 华南农业大学园艺学院,广东广州,510642 |
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| 摘 要： | 目的]明确金边富贵竹黑腐病病原菌种类,筛选出对该病害有防治作用的杀菌剂。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,在显微镜下观察病原物形态特征;分别测试2种不同浓度下的9种供试杀菌剂对该病原菌的抑制作用。结果]引起金边富贵竹黑腐病的病原为半知菌亚门曲霉属的黑曲霉（Aspergillus nigerN.Tiegh）。杀菌剂甲基托布津、恶霉灵、代森锰锌、维鲜、烯酰吗啉、福.福锌等对该菌菌丝生长有较强的抑制作用,有效浓度为500 mg/L时,抑菌率为100%。人工接种试验表明,有效浓度为1 000 mg/L的维鲜或烯酰吗啉溶液喷施叶片防治效果为100%。结论]防治金边富贵竹黑腐病推荐选用50%维鲜乳油或69%烯酰吗啉可湿性粉剂。
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| 关 键 词： | 金边富贵竹 黑腐病 黑曲霉 |
Identification of the Pathogen of Black-rot Disease in Dracaena sanderiana cv.Golden edge and Its Control Method |
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| Institution: | WU Yun-sheng et al (Shenzhen Agricultural Technology Extension Center,Guangdong Province,Shenzhen,Guangdong 518040) |
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| Abstract: | Objective] The research aimed to determine the species of pathogen caused the black-rot disease in Dracaena sanderiana cv.Golden edge,and to screen the effective fungicides to control the disease.Method]Disease samples with typical symptoms were collected to isolate the pathogen based on Koch's rule,and the morphological characteristics of the pathogen was observed under microscope.The inhibition effect of 9 different fungicides with two different concentrations against the pathogen was determined.Result]The black-rot disease of Dracaena sanderiana cv.Golden edge was caused by Aspergillus niger N.Tiegh.Thiophanate-methyl,Hymexazol,Mancozeb,Viziam,Dimethomorph and Fuklasin had strong inhibition effects on the mycelia growth of A.niger.When the concentration of the above fungicides was 500 mg/L,the inhibitory rate against A.niger was 100%.Artificial inoculation test showed that when the solutions of Viziam and Dimethomorph with the effective concentration of 1 000 mg/L were sprayed on the leaves,the control effect was 100%.Conclusion]50% Viziam and 69% Dimethomorph were recommended to select for control the black-rot disease of Dracaena sanderiana cv.Golden edge. |
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| Keywords: | Dracaena sanderiana cv Golden edge Black-rot disease Aspergillus niger N Tiegh |
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