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Growth Analysis of Pitch Pine Seedlings Under Three Temperature Regimes

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Pinus rigida seedlings were grown under three temperature regimes (17/11°, 26/23°, 32/29°C) in a phytotron for 14.5 months. Heights of the three groups were virtually identical at the end of this period although cool temperatures initially retarded seedling development. Biomass of both the cool and warm temperature regime plants was approximately one-half that of the moderate temperature regime plants at 14.5 months. Cool temperatures depressed needle biomass most while warm temperatures depressed root biomass most. Allometric analysis indicated similar relative growth rates of organs at the warm and cool temperatures but dissimilar proportions of stem, root, and needle. Despite biomass depression at warm and cool temperatures, pitch pine grew relatively well at unfavorable temperatures compared to other conifers. Forest Sci. 22:445-448.

Keywords: Pinus rigida; allometry; biomass

Document Type: Journal Article

Affiliations: Editor, BioSciences Information Service of Biological Abstracts, Philadelphia, Pennsylvania

Publication date: December 1, 1976

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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