Short-Term Flooding and Net Photosynthesis in Seedlings of Three Conifers
Abstract:Seedlings of Scots pine, Douglas-fir, and Norway spruce were flooded with freshly boiled distilled water. Controls were drained immediately. Within 4 days, the net uptake of CO2 by flooded Douglas-fir and Norway spruce decreased to about half the control rate, but did not change in Scots pine. One day after flooding, the rate of net CO2 uptake in Norway spruce was less than two-thirds that of controls. Net uptake of CO2, transpiration, and shoot elongation in Douglas-fir began decreasing 4 to 5 hours after flooding. Flooding with aerated water reversed these decreases. The decreased net uptake of CO2; in flooded plants is discussed in relation to the xylem pressure potential. Forest Sci. 29:71-78.
Document Type: Journal Article
Affiliations: Professor of Forest Science, School of Forestry, Oregon State University, Corvallis, Oregon 97331
Publication date: March 1, 1983
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