Study on the Resistance of Rice Chilo suppressalis to Abamectin in Different Areas of Liaoning Province
Received date: 2022-09-16
Online published: 2022-11-17
The resistance level, carboxylesterase activity, multifunctional oxidase activity and glutathione S-transferase activity of rice Chilo suppressalis to abamectin were measured by topical application method and spectrophotometric method for three consecutive years, to clarify the changes of resistance to abamectin and the resistance mechanism of rice Chilo suppressalis in different areas of Liaoning Province. The resistance of Chilo suppressalis to abamectin in various regions of Liaoning Province was increasing year by year, but was still at low resistance and sensitivity levels. Carboxylesterase activity did not show significant differences in different regions, while multifunctional oxidase and glutathione S-transferase activities showed a trend of increasing year by year along with the resistance of Chilo suppressalis to abamectin, and there were significant differences in some regions. The resistance of Chilo suppressalis to abamectin was still at a sensitive level in various regions of Liaoning Province, and the application of abamectin could still achieve good control effects. The changes of glutathione S-transferase and multifunctional oxidase activities of Chilo suppressalis could better reflect the changes of its resistance level to abamectin.
Key words： rice; Chilo suppressalis; abamectin; geographical population; insecticide resistance
YANG Mei, CHU Jin, SHAO Lingyun, SUN Fuyu, LIU Xinyu, YU Fengquan . Study on the Resistance of Rice Chilo suppressalis to Abamectin in Different Areas of Liaoning Province[J]. China Rice, 2022 , 28(6) : 94 -97 . DOI: 10.3969/j.issn.1006-8082.2022.06.018
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