| Resistance mechanism of resistant varieties and promising lines of rice to brown planthopper, Nilaparvata lugens (Ståll) compared with standard resistance (PTB33 and Rathu Heenati) and standard susceptible (Taichung Native 1 : TN1) criteria to evaluate the reaction, the response of rice varieties and promising lines to the infestation of insects. Antixenosis resistance mechanisms, which describes a reaction dislike to eat or inhibit eating, affected to oviposition or fewer oviposition. Mechanical resistance Antibiosis explained by the percentage of surviving and development of the nymph stage to the adult, impact on the life cycle of insects and low feeding rates. Tolerance mechanisms of resistance can be explained by assessments of function plant loss... |
