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Genetic variation in Douglas-fir : a 20-year test of provenances in eastern Nebraska

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  • Twenty-year-old Douglas-fir trees in provenances from Arizona, New Mexico, and southern Colorado survived better and grew taller; but incurred more winter injury in eastern Nebraska than trees from provenances from northern Colorado, southern and western Montana, northern Idaho, Canada, and eastern Washington. However, surviving trees from Pacific Coast, and northern and central Rocky Mountain provenances increased in percent of plantation mean height during the past 9 years, whereas trees from southern Rocky Mountain provenances decreased. Age /age correlations indicate provenances expressing superior height growth can be identified at age 6.
  • Keywords: Pseudotsuga menziesii var. glauca, P. menziessii, provenance, seed source, age /age correlation, winter injury
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  • Van Haverbeke, David F. 1987. Genetic variation in Douglas-fir : A 20-year test of provenances in eastern Nebraska. USDA Forest Service General Technical Report RM-141, 8 p. Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colo.
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