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Within-Tree Variation of Monoterpene Composition and Yield in Slash Pine Clones and Families

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Xylem oleoresin of slash pine (Pinus elliottii Engelm.) was obtained from ortets and ramets of 10 clones and half-sibs of 4 families. Samples were collected at 4-foot intervals from the base to the top of the tree. Monoterpene yields (microliters per gram oleoresin) and composition (percent of total monoterpene) were estimated by gas-liquid chromatography. When all three monoterpenes were present, α-pinene decreased markedly from base to crown, -phellandrene increased, and -pinene remained relatively constant. With two components present, α-pinene remained constant or slightly increased while -pinene remained constant or slightly decreased from base to crown. Results were similar for both composition and yield. Samples from the bottom of the crown gave the most consistent results among clonal and family members of varying size. Therefore, sampling slash pine at the base of the crown rather than at an arbitrarily fixed height should be considered. Forest Sci. 22:185-191.

Keywords: Genetic variation; Pinus elliottii; sampling

Document Type: Journal Article

Affiliations: Principal Plant Geneticist, Southeastern Forest Experiment Station, USDA Forest Service, Olustee, Florida 32072

Publication date: 1976-06-01

More about this publication?
  • 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.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 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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