author(s)
K Chandrasekar, S Suresh, RP Soundararajan and T Boopathi

abstract
Studies were carried out under glass house conditions to study the evaluation of resistance in some rice genotypes against Whitebacked Planthopper, Sogatella furcifera. Among the rice genotypes tested against S. furcifera (Horvath), IR 72, PTB 43, Co 43, IR 64, CB 06 535, CB 08 504, IR 36, Veeradangan and Nijavara lowest mean damage rating (1.00), while genotypes, PTB 41 exhibited a damage score ranging from (1.00), when compared to T(N)1 (9.00).The genotypes viz., ADT 47, ADT 36, TNRH 180, TNRH 243, Swarna, GEP 24, Purple pottu, CORH 3 and BPT 5205 were moderately resistant with damage rating of (3.00-3.67) and the remaining genotypes were moderately susceptible or highly susceptible.