Abstract: The influences of uniconazole on the feeding and oviposition behaviours of the whitebacked planthopper Sogatella furcifera, and the brown planthopper Nilaparvata lugens were studied by soaking the seeds of resistant Rathu Heenati (RHT) and IR64, and susceptible TN1 with uniconazole at 100 mg/kg. Both S. furcifera and N. lugens fed less and laid less eggs remarkably on the uniconazole-treated plants than on the untreated ones. Thus, these findings suggest that regardless the susceptibility of rice variety, the resistant level of rice plants to S. furcifera and N. lugens could be enhanced certainly by seed treatment with uniconazole.

Key words: feeding, Nilaparvata lugens , pest resistance, oviposition, Sogatella furcifera, uniconazole

关键词: 烯效唑, 白背飞虱, 褐飞虱, 取食产卵