Establishment of Near Isogenic Lines of Huangzaosi Maize with Resistance against Maize Head Smut  

金边富贵竹黑腐病病原鉴定及防治方法研究(英文)

作　　者：吴赟生 张森泉 高洋[2] 张荣[2] 

机构地区：[1]深圳农业科技推广中心,广东深圳518040 [2]华南农业大学园艺学院,广东广州510642

出　　处：《Plant Diseases and Pests》2011年第1期14-16,共3页植物病虫害研究（英文版）

摘　　要：[ Objective] The research aimed to determine the species of pathogen causing 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 effects of nine different fungicides under two different concentrations against the pathogen were determined. [ Result ] The black-rot disease of Dracaena sanderiana cv. Golden edge was caused by Aspergillus niger N. Tiegh. Thio- phanate-methyl, Hymexazol, Mancozeb, Viziam, Dimethomorph and Fuklasin had strong inhibition effects on the mycelial growth of A. niger. When the concentra- tion of the above fungicides was 500 rag/L, the inhibitory rate ~alnst A. niger was 100%. Artificial inoculation test showed that when the solutions of Viziam and Dimethomorph with the effective concentration of I 000 mg/L were sprayed on the leaves, the control effect was 100%. [ Conclusion] 50% Viziam and 69% Dim- ethomorph were recommended to use to control the black-rot disease of Dracaena sanderiana cv. Golden edge.[ Objective] The research aimed to determine the species of pathogen causing 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 effects of nine different fungicides under two different concentrations against the pathogen were determined. [ Result ] The black-rot disease of Dracaena sanderiana cv. Golden edge was caused by Aspergillus niger N. Tiegh. Thio- phanate-methyl, Hymexazol, Mancozeb, Viziam, Dimethomorph and Fuklasin had strong inhibition effects on the mycelial growth of A. niger. When the concentra- tion of the above fungicides was 500 rag/L, the inhibitory rate ~alnst A. niger was 100%. Artificial inoculation test showed that when the solutions of Viziam and Dimethomorph with the effective concentration of I 000 mg/L were sprayed on the leaves, the control effect was 100%. [ Conclusion] 50% Viziam and 69% Dim- ethomorph were recommended to use to control the black-rot disease of Dracaena sanderiana cv. Golden edge.

关 键 词：Dracaena sander/arm cv. Golden edge Black-rot disease Aspergillus niger N. Tiegh 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]