Abstract
Polyacrylamide gel electrophoresis was carried out on Nephotettix virescens (Distant) adults collected from India, Sri Lanka and the Philippines, and maintained in glass-houses on rice variety TN-1 at the University of Wales, Cardiff, United Kingdom. The following enzymes showed activity and were recorded: acid phosphatase (ACP), a-glycerophosphate dehydrogenase (aGPD), fumarase (FUM), glucose-6-phosphate dehydrogenase (G-6-PDH), glutamate dehydrogenase (GLUD), glutamate oxalo-acetate transaminase (GOT), hexokinase (HK), lactate dehydrogenase (LDH), malic enzyme (ME) and xanthine dehydrogenase (XDH). The bands in nine enzymes were homologous across the three populations and showed no differences.The relative mobility of the enzyme GLUD in the Philippines population was lower than in the other two populations and could be used for diagnostic separation. The results confirm previous reports of differences in the relative mobility of esterase bands of the Philippines population of N. virescens from India and Sri Lanka populations on starch gel.
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