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Variation in Needle and Cortex Resin Acids during Shoot Development in Pinus sylvestris, P. nigra, and P. strobus

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Abstract:

Diterpene resin acids of needle and cortex tissues from one Pinus strobus seed source, two P. nigra sources, and two P. sylvestris sources were identified and quantitatively determined by gas-liquid chromatography. Tissue samples of current year's shoots were collected from three trees of each source in June, August, and December. A combined total of 20 resin acids, including two unidentified acids in P. strobus needles, were found in the trees examined. Trends in resin acid composition in needles, associated primarily with shoot growth and maturation, were generally similar in all species, seed sources, and tissues, and often showed a pattern of increasing degree of oxidation during development. Changes in composition between the last two sampling times were smaller, suggesting that needle samples should be obtained in late fall or winter to obtain dependable resin acid data. The variety of resin acid components in cortex oleoresin was considerably more limited than in the needles and changes in composition during the year were not as pronounced. Forest Sci. 28:785-796.

Keywords: Austrian pine; Scotch pine; eastern white pine

Document Type: Journal Article

Affiliations: Research Chemist, USDA Forest Service, Forest Products Laboratory, P.O. Box 5130, Madison, WI 53705

Publication date: 1982-12-01

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.

    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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