Frank Sorensen

Treesearch Publications

• Ulrich Kohnle, Sebastian Hein, Frank Sorensen, Aaron R. Weiskittel. 2012. Effects of seed source origin on bark thickness of Douglas-fir (Pseudotsuga menziesii) growing in southwestern Germany
• GR Johnson, Frank Sorensen, J Bradley St Clair, Richard Cronn. 2004. Pacific Northwest forest tree seed zones: a template for native plants?
• Vicky J. Erickson, Nancy L. Mandel, Frank Sorensen. 2004. Landscape patterns of phenotypic variation and population structuring in a selfing grass, Elymus glaucus (blue wildrye).
• Frank Sorensen, Nancy L. Mandel, Jan E. Aagaard. 2001. Role of selection versus historical isolation in racial differentiation of ponderosa pine in southern Oregon: an investigation of alternative hypotheses.
• Frank Sorensen. 2001. Effect of population outcrossing rate on inbreeding depression in Pinus contorta var. murrayana seedlings.
• Frank Sorensen. 1999. Relationship between self-fertility, allocation of growth, and inbreeding depression in three coniferous species.
• Frank Sorensen. 1997. Effects of sib-mating and wind pollination on nursery seedling size, growth components, and phenology of Douglas-fir seed-orchard progenies.
• Frank Sorensen, John C. Weber. 1994. Genetic variation and seed transfer guidelines for ponderosa pine in the Ochoco and Malheur National Forests of central Oregon.
• Frank Sorensen. 1994. Genetic variation and seed transfer guidelines for ponderosa pine in central Oregon.
• Frank Sorensen, Robert K. Campbell. 1992. Seed weight - seedling size correlation in coastal Douglas-fir: genetic and environmental components.
• Frank Sorensen. 1992. Genetic variation and seed transfer guidelines for lodgepole pine in central Oregon.
• John C. Weber, Frank Sorensen. 1992. Geographic variation in speed of seed germination in central Oregon ponderosa pine (Pinus ponderosa Dougl. ex Laws.).
• John C. Weber, Frank Sorensen. 1990. Effects of stratification and temperature on seed germination speed and uniformity in central Oregon ponderosa pine (Pinus ponderosa Dougl. ex Laws.).
• Frank Sorensen, T.L. White. 1988. Effect of natural inbreeding on variance structure in tests of wind pollination Douglas-fir progenies.
• Frank Sorensen, Robert K. Campbell. 1980. Genetic variation in rootability of cuttings from one-year-old western hemlock seedlings.
• Frank Sorensen. 1980. Effect of date of cone collection and stratification period on germination and growth of Douglas-fir seeds and seedlings.
• Frank Sorensen. 1970. Self-fertility of a central Oregon source of ponderosa pine.
• Frank Sorensen. 1969. Embryonic genetic load in coastal Douglas-fir, Pseudotsuga menziesii var. menziesii.