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Comparative Photosynthesis and Respiration of Trembling and Bigtooth Aspens in Relation to Growth and Development

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Rates of photosynthesis and dark respiration for greenhouse grown trembling aspen and bigtooth aspen seedlings were measured using single attached leaves and whole seedlings. Whole seedlings of neither species differed significantly in photosynthetic rate, dark respiration, leaf area ratio, or dry matter accumulation. The single leaf dark respiration rate of each species was similar to the rate observed for the whole seedling, but the leaf net photosynthetic rate was significantly higher than that of the whole seedling. Leaves of trembling aspen showed higher net photosynthetic rates than leaves of bigtooth aspen, but rates of dark respiration and carbon dioxide compensation points of the individual leaves were not statistically different between species. Forest Sci. 24:103-109.

Keywords: CO2 exchange; Physiological genetics; Populus grandidentata; Populus tremuloides; container seedlings; leaf area increment

Document Type: Journal Article

Affiliations: Professor, Department of Forestry, Michigan State University, East Lansing, Michigan 48824

Publication date: 1978-03-01

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

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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