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Leaf-Oil-Terpene Variation in Western White Pine Populations of the Pacific Northwest

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The volatile leaf oil of western white pine was analyzed. In addition to the typical monoterpenes, (--)--elemene, caryophyllene, as well as (--)--selinene, cadinene isomers and their corresponding alcohols, and manool were isolated. The quantitative variation within a tree, from tree to tree, and among populations from British Columbia and Washington was determined. The composition of the leaf oil from known healthy trees or resistant crosses was compared with that of blister rust infected trees; no correspondence between disease resistance and terpene composition was found. The foliage of one heavily infected tree had a markedly different quantitative terpene composition on resampling 1 year later. Other healthy or infected trees showed no change. 180 trees from 10 coastal and 10 interior populations were sampled. Within-population variation was generally much higher than that between different populations and most monoterpene, all sesquiterpene, and the manool percentages showed no regional differences. Minor clustering of populations from Vancouver Island and the Olympic peninsula on the basis of -pinene was found; those from the Cascade mountains clustered with interior populations. FOREST SCI. 23:507-516.
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Keywords: Chemosystematic study; Cronartium ribicola; Pinus monticola; monoterpenes; sesquiterpenes

Document Type: Journal Article

Affiliations: Principal Research Officer, Prairie Regional Laboratory, National Research Council of Canada, Saskatoon, Sask.

Publication date: 1977-12-01

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  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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