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Douglas Fir Seed from Young Trees

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Abstract:

Seed collected from trees less than 20 years of age is generally viewed with suspicion. Evidence has been obtained, however, which indicates that young Douglas fir trees are capable of producing important quantities of fertile seed, provided adequate cross-pollination can be obtained. The greatest danger lies in the collection of cones which have not been properly pollinated or which contain a large number of self-pollinated ovules, both conditions resulting in a large proportion of parthenocarpic, sterile seeds. This danger can be avoided by examination of sample cones and seeds prior to collection, by the use of cutting tests to determine the proportion of rifled seeds, and by keeping in mind the necessity for an adequate external source of pollen. Young stands, favorably situated with regard to pollen supply, may prove to be a cheap source of good seed.

Document Type: Journal Article

Affiliations: British Columbia Forest Service

Publication date: 1942-09-01

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.

    2015 Impact Factor: 1.476
    Ranking: 22 of 66 in forestry

    Average time from submission to first decision: 39.6 days*
    June 1, 2016 to Feb. 28, 2017

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