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Germination and Seedling Growth of Northern Red Oak: Effects of Stratification and Pericarp Removal

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Abstract:

Northern red oak (Quercus rubra L.) seeds exhibit dormancy that may be broken by stratification and modified by pericarp removal. Germination and seedling growth of northern red oak acorns with pericarps removed or intact were measured after various periods of stratification (5°C). Pericarp removal increased germination of freshly harvested acorns fivefold (from 10 to 55 percent). Dormancy deepened during the first 4 weeks of stratification. Stratification for 6 to 8 weeks significantly increased germination percentage and rate. Seedlings grew taller and faster from acorns that had been stratified 8 to 12 weeks than from acorns with 0 to 4 weeks of stratification. Stratification's effect on root and shoot weights and lengths, and root/shoot ratios were evident as early as 14 days after germination. Pericarp removal had no significant effect on seedling growth. Forest Sci. 31:31-39.

Keywords: Quercus rubra; dormancy; etiolation

Document Type: Journal Article

Affiliations: Associate Professor of Crop Physiology, Department of Agronomy, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

Publication date: 1985-03-01

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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