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Occurrence of Root Pressure Exudation in Pacific Northwest Conifer Seedlings

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Exudation was observed from the stumps of detopped seedlings of Pseudotsuga menziesii, Abies grandis, Abies procera, Abies amabilis, Pinus ponderosa, Pinus contorta, Picea engelmannii, and Larix occidentalis. Exudation occurred both from seedlings with completely suberized root systems and from seedlings with various amounts of new root growth, and persisted up to 79 days. Exudate osmotic potentials ranged from -0.24 to -0.78 bar. Long-term cold storage of the seedlings is thought to be the major factor stimulating exudation in these seedlings. Forest Sci. 26:275-279.

Keywords: Abies amabilis; Abies grandis; Abies procera; Larix occidentalis; Picea engelmannii; Pinus contorta; Pinus ponderosa; Pseudotsuga menziesii

Document Type: Journal Article

Affiliations: Principal Plant Physiologist, Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Wenatchee, WA 98801

Publication date: 1980-06-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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