Antiphytoviral activities of 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine
1987
Schuster, G. (Leipzig Univ. (German D.R.). Wissenschaftsbereich Pflanzenphysiologie und Mikrobiologie. Sektion Biowissenschaften)
Subsituation of 2,4-dioxohexahydro-1,3,5-triazine (DHT) by two acetyl groups resulted in an antiphytoviral compound, 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DA-DHT), which inhibitis PVX, PVY, ToMV, TMV and TRV better than DHT, but only after application at relatively high concentrations (10(-2) mol/l). The antiphytoviral activity of DA-DHT is enhanced by combined treatments with DHT as well as with cyanoguanidine, sodiumalkanemonosulfonate and 2-anilino-5-adamantyl-1,3,4-thiadiazole. DA-DHT reduced the number of symptoms of PLRV bearing potato eye cutting plants to a higher percentage than DHT. But the highest reduc1303tion was brought about by combined treatments with DA-DHT, cyanoguanidine, sodiumalkanemonosulfonate and 2-anilino-5-adamantyl-1,3,5-thiadiazole. Moreover, treatments with DA-DHT increased more than treatments with DHT the mass of potato tubers produced by potato eye cutting plants. Combined treatments with DA-DHT and the above mentioned substances reduced the natural infection with PLRV of a completely healthy potato stock for about 70 per cent and that of PVY for about 40 per cent. Thus, the DA-DHT containing preparations may be capable of keeping potatoes in a good state of health even in regions with a high infection pres
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