ベノミル剤によるタバコモザイクウイルスとジャガイモYウイルスのタバコにおける病徴抑制

抄録

Watering of 200ml 0.025-1% benomyl (50% WP) suspension per plant to the basement soil of potted Samsun tobacco plants caused very considerable reduction of the severity of TMV-L (a tomato strain of TMV) symptoms. ELISA absorbance showed that in two weeks after inoculation TMV-L concentration of upper leaves of tobacco plants treated with 200ml 0.1% benomyl suspension was a quarter of that of control plants. In one month after inoculation, however, there was no difference between those concentrations. Watering of 200ml 0.1-0.5% benomyl solution per plant to Xanthi-nc tobacco plants caused a slight reduction of the severity of PVY-T (a necrotic strain of PVY) symptoms. Combined application of benomyl and 2, 4-dioxohexa-hydro-1, 3.5-triazine (2% granules) showed no obvious effects of combination against the symptoms by TMV-L or PVY-T.