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Loss of Douglas-Fir Seed Viability During Cone Storage

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Cones of Pseudotsuga menziesii (Mirb.) Franco were stored at 0°, 10° and 20°C with moisture contents of 20, 40 and 60 percent for 4, 8 and 16 weeks in a factorial study. Germination tests, X-ray examination and mold counts were conducted on extracted seed. Storage of cones with 60 percent moisture at 0°C resulted in slight losses of seed viability which increased to full loss when storage was for 4 weeks at 20°C. Cones of this moisture content should be processed as soon as possible. Cones of 40 percent moisture or less can be stored at temperature of 10°C or less with no significant loss in seed viability. Cones of 20 percent moisture content or greater exhibited a significant seed viability loss when stored at 20°C. A hypothesis is introduced implicating microfloral action in the destruction of seed during cone storage.

Document Type: Journal Article

Affiliations: Forest Pathologist, Weyerhaeuser Company Forestry Research Center, Centralia, Wash.

Publication date: 1965-12-01

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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