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Notes: Radial Distribution of Corticular Photosynthate in Stems of Bigtooth and Trembling Aspen

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Stem sections of two bigtooth aspen and two trembling aspen were exposed to 14CO2. Relatively large amounts of radioactivity (14C-labeled alcohol-soluble compounds) were later detected in the cortex and cambial region of both species. Lesser amounts of activity were found in xylem and phloem; the smallest amount in the nonconducting phloem. These results indicate that photosynthate produced in the cortex is available for use by the cambium and that some is likely stored in xylem and phloem parenchyma as well as in cortical parenchyma. Forest Sci. 21:370-372.

Keywords: Populus grandidentata; Populus tremuloides; cortex; translocation

Document Type: Miscellaneous

Affiliations: School of Forest Resources, University of Maine, Orono, Maine 04473

Publication date: December 1, 1975

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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