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Resistance of Botryodiplodia theobromae to Carbendazim and the Fungicides Screening for Mango Stem End Rot Control

文献类型: 外文期刊

作者: Hu, M. J. 1 ; Gao, Z. Y. 2 ; Zhang, Z. K. 2 ; Yang, F. Z. 2 ; Li, M. 1 ;

作者机构: 1.CATAS, Environm & Plant Protect Inst, Danzhou 571737, Hainan, Peoples R China

2.Minist Agr, Key Lab Integrated Pest Management Trop Crops, Danzhou 571737, Hainan, Peoples R China

3.Minist Agr, Key Lab Detect & Monitoting Invasive Pest Trop Ag, Danzhou 571737, Hainan, Peoples R China

关键词: Mangifera indica L.;Botryodiplodia theobromae Pat.;carbendazim;resistance;fungicides;screening

期刊名称:IX INTERNATIONAL MANGO SYMPOSIUM

ISSN:

年卷期:

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收录情况: SCI

摘要: 86 isolates of Botryodiplodia theobromae Pat., causing mango stem end rot, were obtained from 3 regions in Hainan province of China and tested for their resistance to carbendazim (MBC) in laboratory. The toxicity of 23 fungicides to 2 isolates of carbendazim-resistant and 2 isolates of carbendazim-sensitive B. theobromae was tested by mycelium growth rate methods, and analyzed by the EC50 value, the EC90 value and the cross-resistance to each other.The results showed that the carbendazim-resistant isolates had been found in Danzhou, Ledong and Sanya, Hainan province. 10 fungicides including sporgon, propiconazole, fiusilazole, prochloraz, iprodione, difenoconazole, tebuconazole, myclo-butanil, pyraclostrobin and validamycin A were recommended for choices for controlling mango stem end rot disease. In addition, the fungicides of chlorothalonil and mancozeb could also be chosen. The resistance to thiophanate-methyl, kresoxim-methyl and diniconazolewas appeared in the tested pathogens. In cross-resistance test, the results showed that carbendazim, kresoxim-methyl and diniconazole had cross-resistance each other, while kresoxim-methyl and validamycin A had negative cross-resistance each other. To avoid the resistance of the pathogen to the fungicides, such fungicides should be used by turns.

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