期刊
JOURNAL OF ECONOMIC ENTOMOLOGY
卷 114, 期 3, 页码 1282-1290出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/jee/toab027
关键词
Plutella xylostella; resistance monitoring; integrated pest management
类别
资金
- National Key R&D Program of China [2017YFD0200300]
- Beijing Leafy Vegetables Innovation Team of Modern Agro-industry Technology Research System [BAIC072020]
- Beijing Key laboratory for Pest Control and Sustainable Cultivation of Vegetables
- Science and Technology Innovation Program of the Chinese Academy of Agricultural Sciences (CAASASTIP-IVFCAAS)
The study revealed that the diamondback moth has developed varying degrees of resistance to multiple insecticides, with the highest resistance observed against beta-cypermethrin. The resistance levels were highest in Midu region.
The diamondback moth, Plutella xylostella L., is a worldwide crop pest that is difficult to control because of its ability to develop resistance to many insecticides. To provide a reference for resistance management of P. xylostella in China, the present study used a leaf-dip bioassay to monitor the resistance of P. xylostella to nine insecticides in eight regions of China. The results showed that P. xylostella had developed a high level of resistance to beta-cypermethrin (resistance ratio [RR] > 112), and moderate (RR < 40) to high levels of resistance to indoxacarb, abamectin, and chlorfluazuron. For chlorantraniliprole, RRs > 100 were found in Midu (Yunnan Province) and Jinghai (Tianjin). In most regions, the resistance to spinetoram and chlorfenapyr and Bacillus thuringiensis (Bt) was low. No resistance was detected to diafenthiuron. Overall, P. xylostella resistance to insecticides was higher in Midu than in other regions. The data in this study should help guide the selection of insecticides for management of P. xylostella in China.
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