The Effects of Oil-based Fungicides on Water Loss of Coleus blumei Leaves and Pelargonium Hybrid Petals |
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| Authors: | BATAILLE A; EVELING D W; MCCALL R D; HARVEY B M |
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| Institution: | Department of Biology, University of Ulster Jordanstown, Newtownabbey BT37 0QB, UK
* Plant Pathology Research Division, Department of Agriculture for Northern Ireland, Newforge Lane, Belfast BT9 5PX, UK
 Department of Agricultural Botany, The Queen's University of Belfast Newforge Lane, Belfast BT9 5PX, UK |
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| Abstract: | Effects of oil-based fungicides on plant surfaces were studiedby assessing water loss from excised sprayed leaves or petalsand by microscopy. Two fungicides (Turbair Zineb Fungicide andTurbair Copper Fungicide) were sprayed, using a Potter tower,onto the adaxial surfaces of excised leaves or petals, and weightloss was determined as a measure of water loss. Doses of approximately4–9 g m–2 significantly increased water loss fromPelargonium hybrid petals and leaves of Coleus blumei Benth.The fungicides, their supernatants and the carrier oil increasedwater loss from the petals but effects of the supernatants andthe carrier oil on C. blumei leaves were less conclusive. LowTemperature Scanning Electron Microscopy (LTSEM) did not revealany scoring or marked erosion of the adaxial surface of leavesor petals 24 h after application of the fungicides. Coleus blumei Benth., Pelargonium hybrid, cuticle, fungicides, oils, LTSEM, water loss |
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