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Title
Soil Temperature Influences on Root Resistance of Pinus contorta Seedlings
Document Type
Article
Publication Title
Plant Physiology
Publication Date
4-1980
Volume
65
Issue
4
First Page
635
Last Page
640
Abstract
The influence of low temperature in the root zone on water uptake in lodgepole pine (Pinus contorta Dougl. ex Loud.) was studied under laboratory conditions. To remove soil hydraulic influences, two-year-old seedlings were transferred to solution cultures and maintained in temperature controlled water baths. Short term measurements of leaf conductance, leaf water potential and tritiated water movement were taken at root temperatures from 22 C down to 0 C. Root resistance was calculated to be 67% of total plant resistance at 7 C and 93% at 0 C. In addition an Arrhenius break was found in a plant resistance versus temperature plot, suggesting a significant change with temperature in the membrane pathway in the root water uptake system.
DOI
http://dx.doi.org/10.1104/pp.65.4.635
Rights
© 1980 American Society of Plant Biologists
Recommended Citation
Running, Steven W. and Reid, C. Patrick. (1980). Soil Temperature Influences on Root Resistance of Pinus contorta Seedlings. Plant Physiology, 65: 635-640. doi:10.1104/pp.65.4.635