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The small brown planthopper (SBPH), Laodelphax striatellus (Fallén), is an important pest of rice that has developed resistance and even cross‐resistance to insecticides. In a previous study, we found that the resistance mechanism of a deltamethrin‐resistant strain of SBPH (JH‐del) involved the enhancement of detoxification enzyme activity and was unrelated to target resistance. The JH‐del strain...
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