Responses of subterranean clover and ryegrass to sulphur dioxide under field conditions
Murray, F. (1984) Responses of subterranean clover and ryegrass to sulphur dioxide under field conditions. Environmental Pollution Series A, Ecological and Biological, 36 (3). pp. 239-249.
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Subterranean clover Trifolium subterraneum L. cv. Woogenellup and perennial ryegrass Lolium perenne L. cv. Tetralite were exposed to SO2 in open-top chambers at mean ambient concentrations of 164, 70 or 19 μg m−3 for 48 days. Exposure to SO2 had no effect on calorific value or ash concentration in subterranean clover or ryegrass, but exposure to 164 μg m−3 of SO2 decreased leaf protein concentrations in both species. Chlorophyll concentrations were decreased by exposure to 164 and 70 μg m−3 of SO2 in subterranean clover but not in ryegrass. Peroxidase activity increased with increasing SO2 concentration and duration of exposure in subterranean clover, but not in ryegrass. Specific peroxidase activity was increased in both species by exposure to 164 μg m−3 of SO2 only. Root and shoot dry weights were not affected by exposure to SO2.
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|Copyright:||© 1984 Published by Elsevier Ltd.|
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