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Abstract
Levels of genetic variation within and among 163 individual- tree collections and one bulk lot of whitebark pine were estimated using isozymes, mitochondrial DNA and chloroplast DNA; 79 of the samples are also part of a common garden study evaluating survival, rust resistance, late winter cold hardiness, and early height-growth. Within the species, 100 percent of the isozyme loci are polymorphic, with the number of alleles per locus (Na) equal to 4.0. Genetic diversity is high (He = 0.271) relative to other conifers in the same forest cover type and is comparable to quaking aspen (Populus tremuloides Michx) and limber pine (Pinus flexilis James), two of the most geographically widespread tree species in North America.
Parent Publication
Keywords
high elevation five-needle pines,
threats,
whitebark,
Pinus albicaulis,
limber,
Pinus flexilis,
southwestern white,
Pinus strobiformis,
foxtail,
Pinus balfouriana,
Great Basin bristlecone,
Pinus longaeva,
Rocky Mountain bristlecone pine,
Pinus aristata
Citation
Mahalovich, Mary F.; Hipkins, Valerie D. 2011. Molecular genetic variation in whitebark pine (Pinus albicaulis Engelm.) in the Inland West. In: Keane, Robert E.; Tomback, Diana F.; Murray, Michael P.; Smith, Cyndi M., eds. The future of high-elevation, five-needle white pines in Western North America: Proceedings of the High Five Symposium. 28-30 June 2010; Missoula, MT. Proceedings RMRS-P-63. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 118-132.
