Genetically Proven Douglas-Fir Christmas Trees
Seed was collected in 1964 from 100 wind-pollinated Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) parent trees from four sites, two near Corvallis, Oregon, and two near Shelton, Washington. By 1974, eight commercial Christmas tree growers in Oregon and Washington had cultured, harvested, and marketed progenies grown in designed tests. Financial returns on progenies of the 10 best parents showed discounted gains of 18 percent in selling price but net returns were increased 58 percent because rapid growth was a major factor in profitability. Upright branching and dense, dark foliage contributed most to upgrading the trees. Seedlings from top-ranking parents are in commercial production, and second-generation breeding has begun.
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Document Type: Journal Article
Affiliations: Forest Geneticist, Department of Natural Resources, State of Washington, Olympia
Publication date: 1977-05-01
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- 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.
2016 Impact Factor: 1.675 (Rank 20/64 in forestry)
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