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Population Differentiation in Seedling Root Size Between Adjacent Stands of Jack Pine

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Seeds from adjacent wet-site and dry-site jack pine stands were planted in a common growth chamber, and seedlings were grown with and without drought. Population differentiation in root and shoot growth traits was assessed 14 and 35 days after seedling emergence. Seedlings originating from the wet site had significantly more tertiary roots than those originating from the dry site. Differences between wet- and dry-site populations in secondary root length and shoot biomass disappeared when adjusted for the effects of higher mean seed weight in the dry-site population. The strength of correlations between seedling size parameters and seed weight varied with seedling age and exposure to drought. Droughty conditions inhibited secondary and tertiary but not primary root growth. For. Sci: 38(4):777-785.
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Keywords: Pinus banksiana; covariance analysis; drought resistance; maternal effect; seed weight

Document Type: Journal Article

Affiliations: Professor, Department of Forest Science, University of Alberta, Edmonton, Alberta, Canada T6G 2H1

Publication date: 1992-11-01

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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