Association of Leafhopper Feeding Behavior with Transmission of Rice Tungro to Susceptible and Resistant Rice Cultivars

(...) On leafhopper-resistant cultivars, leafhoppers fed mainly from the xylem and, during the feeding, transmitted predominantly RTBV alone. (...) Correlations between phloem feeding and virus transmission by leafhoppers and leafhopper survival were significant among cultivars with various resistances to leafhopper. (...) The negative correlations was probably due to variability of leafhoppers in feeding behavior in each cultivar. Nevertheless, resistances of rice cultivars can be differentiated by testing feeding activities of leafhoppers during an inoculation access. The bromocresol-green test was the most appropriate test for this purpose