Effects of Different Rice Varieties on Feeding and Oviposition of White-backed Planthopper,Sogatella furcifera
Tichung Native l(TN1) and Ruthu Heenati(RHT) were used as susceptible and resistant checks to study the comparative differences in feeding and ovipositing of the white-backed planthopper Sogatella fucifera (Horvath) in six resistant varieties of rice by taking feeding response, ovipositional marking, number of eggs laid and percentage of egg development as indices. The results showed that types of resistance were based on ovipositional and feeding response,anti-feeding,significant oviposition repelling and both anti-feeding and ovipositional repelling;No differences of percentage of development were found between resistant and susceptible varieties. It is concluded that it is essential to extend breeding time in resistant rice varieties.