Effects of Freezing Conditions on Boles of Snow Gum
The girths of snow gums showed large shrinkage during freezing weather in late winter 1974. The magnitude of shrinkage was closely related to thickness of bark. Shrinkage of fresh log sections occurred when bark tissue was cooled to between -0.5° and -2°C and increased at lower temperatures. Shrinkage was localized in the bark. By contrast, xylem expanded. The xylem returned to original dimensions after thawing but bark tissue failed to attain its original thickness after thawing apparently because of injury. The change in dimensions of the bark layer on freezing is explained by extracellular ice formation and cell dehydration. Forest Sci. 22:370-376.
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Document Type: Journal Article
Affiliations: Division of Plant Industry, Commonwealth Scientific and Industrial Research Organization, P.O. Box 1600, Canberra City, A.C.T. 2601, Australia
Publication date: 1976-09-01
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