Joint action of sulfur dioxide and hydrogen fluoride on growth of Eucalyptus tereticornis
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Eucalyptus teriticornis plants were continuously exposed to SO2 (< 13,130 and 267 μg/m3), HF (< 0.06 and 0.38 μg/m3) or their combination for 90 days in open-top chambers when the plants were 18 months old. The effect of these treatments was a change in the pattern of growth. HF or SO2 alone reduced leaf surface area and weight in mature and immature leaves. Plants exposed to 130 μg/m3 of SO2 may have compensated for reduced leaf area and weight by increasing leaf chlorophyll concentrations and leaf production rate. Treatment with the combination of HF and SO2 reduced the area and weight of mature leaves, and resulted in higher leaf fluoride concentrations than those exposed to HF alone, possibly as a result of increased stomatal conductance.
|Publication Type:||Journal Article|
|Murdoch Affiliation:||School of Biological and Environmental Sciences|
|Copyright:||© 1988 Elsevier B.V.|
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