Effect of ozone on net photosynthesis in oat (Avena sativa) and duckweed (Lemna gibba) |
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| Authors: | Forberg E Aarnes H Nilsen S Semb A |
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| Institution: | The Phytotron, Department of Biology, PO Box 1066, University of Oslo, 0316 Oslo 3, Norway. |
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| Abstract: | Short exposure to ozone depressed photosynthesis in both oat and duckweed at concentrations above 140 microg m(-3) and 300 microg m(-3), respectively. The effect on exposed oat flag leaves was age-dependent, with maximum susceptibility to ozone 10-20 days after emergence of the panicle. In duckweed, photosynthesis was more sensitive to differences in ozone concentration than to differences in duration of exposure. |
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