Resistance Mechanisms in Rice to Brown Planthopper Nilaparvata lugens (Stal)

Abstract

Resistance mechanisms to the brown planthopper Nilaparvata lugens (stal) were investigated in eight varieties and lines of rice, SPR LR 75009-86-1-1, SPR LR 76001-264-1-1, SPR LR 75001-11-2-1, BKN (resistant check) under glass-house conditions at the Rice Research Institute, Bangkhen, and under field condition at the Pathumthani Rice Research Center. The study indicated that rice varieties had mechanisms of resistance based on non-preference for feeding or oviposition, together with antibiosis. The variety RD 21 showed characteristics of having tolerance to the brown planthopper.