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Assuring Seed Quality for Seedling Production: Cone Collection and Seed Processing, Testing, Storage, and Stratification

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Forestry Nursery Manual: Production of Bareroot Seedlings

Part of the book series: Forestry Sciences ((FOSC,volume 11))

Abstract

This chapter summarizes current technology concerning cone collection and seed processing, testing, storage, and stratification for the six major conifer species—Douglas-fir, ponderosa pine, lodgepole pine, noble fir, white fir, and western hemlock—produced as seedlings in Northwest bareroot nurseries. Though great advances have been made in the past 20 years, further refinements are deemed necessary to continue improving seedling-production technology, especially as use of valuable seed-orchard seed is favored over natural-stand seed. Suggested future refinements should include: (1) determining patterns of seed retrievability to capture maximum seed yield; (2) devising a method for separating nonviable and low-vigor seed from viable and high-vigor seed; (3) developing a method for improving the correlation between laboratory and field germination; (4) designing an effective long-term seed-storage method for true firs; and (5) developing a quick seed treatment for nursery sowing which shortens or eliminates stratification requirements.

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Authors
  1. Y. Tanaka
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Editors and Affiliations

  1. Department of Forest Science, Oregon State University, 97331, Corvallis, Oregon, USA

    Mary L. Duryea (Assistant Professor, Leader, Nursery Technology Cooperative) (Assistant Professor, Leader, Nursery Technology Cooperative)

  2. U.S.D.A. Forest Service, State and Private Forestry, Post Office Box 25127, 80225, Denver, Colorado, USA

    Thomas D. Landis (Western Nursery and Greenhouse Specialist) (Western Nursery and Greenhouse Specialist)

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© 1984 Martinus Nijhoff/Dr W. Junk Publishers, The Hague

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Tanaka, Y. (1984). Assuring Seed Quality for Seedling Production: Cone Collection and Seed Processing, Testing, Storage, and Stratification. In: Duryea, M.L., Landis, T.D., Perry, C.R. (eds) Forestry Nursery Manual: Production of Bareroot Seedlings. Forestry Sciences, vol 11. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6110-4_4

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  • DOI: https://doi.org/10.1007/978-94-009-6110-4_4

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