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Initial Growth of Fraser Fir Seedlings at Different Day/Night Temperatures

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Four-week-old Fraser fir (Abies fraseri (Pursh) Poir.) seedlings were grown in controlled-environment chambers for 17 weeks at day temperatures of 18°, 22°, 26°, and 30°C in factorial combination with night temperatures of 10°, 14°, 18°, 22°, 26°C. Temperature optima depended upon the growth parameter: height above cotyledons (30°/18°C), stem cross-sectional area (22°/26°C), root dry weight (26°/10°C), shoot dry weight (18°/22° and 22°/26°C), and total dry weight (26°/14°C). Shoot/root ratios decreased rapidly for night temperatures below 14°C, and were highest for 30°C days in combination with 18° to 22°C nights. Day temperatures approaching 30°C increased height growth, but reduced total dry weight, root dry weight, and stem cross-sectional area. Day temperatures of 22° to 27°C and night temperatures of 13° to 19°C appear optimal for containerized Fraser fir seedlings during active growth. Forest Sci. 27:545-550.
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Keywords: Abies fraseri; christmas trees; containerized seedlings; controlled environment; thermoperiodism

Document Type: Journal Article

Affiliations: Assistant Professor, Department of Horticultural Science, North Carolina State University, Raleigh, NC 27650

Publication date: 1981-09-01

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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