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Genetic variation in Broadleaf Lupine (Lupinus latifolius) on the Mt Hood National Forest and implications for seed collection and deployment
- Native Plants Journal
- Indiana University Press
- Volume 6, Number 1, Spring 2005
- pp. 36-48
- 10.1353/npj.2005.0018
- Article
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Analysis of a common-garden study of broadleaf lupine (Lupinus latifolius Lindl. ex J.G. Agardh ssp. latifolius [Fabaceae]) indicates that use of watershed delineations is better than use of plant association series for determining seed zones on the Mt Hood National Forest. Risk analysis further confirmed that only 4 seed zones are required, providing a reasonable compromise between managing costs and maintaining local adaptation. Overall, moderate amounts of genetic variation were found in 84 seed sources. Two principal components (PCs) summarized 58% of the variation in 24 measured traits, and variation in PC scores was significantly correlated with topographic, geographic, and climatic variables. Regression analyses showed that these variables accounted for 47% of the variation in the first PC and 34% of the variation in the second PC.