Resistance monitoring for eight insecticides in Plutella xylostella in central China |
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| Institution: | 1. College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China;2. Department of Entomology, China Agricultural University, Beijing 100193, China;1. Plant Protection Research Institute, Guangdong Academy Agricultural Sciences, No. 7 Jinying Rd., Tianhe District 510640, Guangzhou, Guangdong, China;2. Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, Department of Entomology, College of Agriculture, South China Agricultural University, Guangzhou, China;3. Department of Entomology, MNS-University of Agriculture, Multan 60000, Pakistan;4. Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technology, Ni?de University, Turkey;5. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, Haidian 100193, China;6. Department of Agronomy, MNS-University of Agriculture, Multan 60000, Pakistan;7. Department of Entomology, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan 60800, Pakistan;8. Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi, Pakistan;9. Department of Entomology, University of Haripur, Pakistan;10. Department of Zoology, University of Education, Faisalabad, Pakistan;11. College of Geography, Fujian Normal University, 350007, China;12. College of Plant Protection, Fujian Agriculture and Forestry University, 350002, China;13. Government of Punjab, Agriculture Department, Lahore, Pakistan;14. Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia;15. Unit of Bee Research and Honey Production, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia;p. Biology Department, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia |
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| Abstract: | The diamondback moth, Plutella xylostella L., is one of the most important pests of cruciferous vegetables in the world. Assessment of changing insecticide resistance is essential for maintaining control efficiency and resistance management. In this study, four field populations of P. xylostella were collected from cabbage (Brassica oleracea, var. capitata L.) fields in central China from 2010 to 2012 to monitor their resistance to abamectin, Bacillus thuringiensis (BT) subsp. kurstaki (WG-001), spinosad, chlorfluazuron, chlorfenapyr, diafenthiuron, indoxacarb and beta-cypermethrin by using a leaf-dipping bioassay method. The results indicated that chlorfenapyr and diafenthiuron showed high toxicity to P. xylostella in central China, with no obvious toxicity change during the three years. The resistance of P. xylostella to spinosad was at low to moderate levels of resistance in all three years. Resistance of P. xylostella to abamectin, chlorfluazuron and indoxacarb varied greatly among the four regions. P. xylostella exhibited moderate and high levels of resistance to abamectin, chlorfluazuron and indoxacarb. The resistance of this pest to BT (WG-001) and beta-cypermethrin was severe in the four regions. Our study was conducive for developing a more effective resistance management program for P. xylostella. |
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| Keywords: | Diamondback moth Cabbage Resistance ratio Bioassay |
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