Skip to Main Content
Site-to-site genetic correlations and their implications on breeding zone size and optimum number of progeny test sites for Coastal Douglas-fir.Author(s): G.R. Johnson
Source: Silvae Genetica. 46: 280-285
Publication Series: Scientific Journal (JRNL)
PDF: View PDF (258 KB)
DescriptionType B genetic correlations were used to examine the relation among geographic differences between sites and their site-to-site genetic (Type B) correlations. Examination of six local breeding zones in Oregon indicated that breeding zones were, for the most part, not too large because few environmental variables were correlated with Type B genetic correlations. The data also were used to examine expected gains from using combinations of sites in selection indices. Even though additional sites always increased the expected genetic gain, the marginal increase was only minimal if 3 or 4 sites were already in the index. The trend was consistent over all 6 breeding zones.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationJohnson, G.R. 1997. Site-to-site genetic correlations and their implications on breeding zone size and optimum number of progeny test sites for Coastal Douglas-fir. Silvae Genetica. 46: 280-285
- Age trends in Douglas-fir genetic parameters and implications for optimum selection age.
- An evaluation of height as an early selection criterion for volume and predictor of site index gain in the western gulf
- Genotype-environment interaction and stability in ten-year height growth of Norway spruce Clones (Picea abies Karst.).
XML: View XML