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Early Selection for Improving Volume Growth in Coastal Douglas-fir Breeding Programs

Creator:

Ye, T. Z. and Jayawickrama, K. J. S.

Abstract:

Measurements on growth traits up to 41 years of age from 68 progeny sites in eight first-generation breeding zones of coastal Douglas-fir (Pseudotsuga menziesii [MIRB.] FRANCO var. menziesii) in the US Pacific Northwest were used to investigate age trends of genetic parameters and to determine optimum age of selection. Heritabilities...

Resource Type:

Article
Including wood stiffness in tree improvement of coastal Douglas-fir in the US Pacific Northwest: a literature review and synthesis

Creator:

Jayawickrama, K. J. S., Ye, T. Z., Gupta, R., and Cherry, M. L.

Resource Type:

Technical Report