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Selfing in Clonal Seed Orchards of Slash Pine

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Abstract:

Using 12 gene-marker clones occurring in eight clonal seed orchards, we estimated the frequencies of viable self-fertilized seed resulting from wind pollination over a period of 5 years. Frequencies averaged 2.5 percent but varied greatly among orchards and years. Using data from controlled self and cross-pollinations, we further estimated that frequency of total self-fertilized seed (viable + nonviable) averaged 9.5 percent. More selfing occurred in lower crowns than in upper crowns. Emasculation of a portion of the ramets suggested that selfing within ramets was greater than between ramets of the same clone. Implications for orchard management are discussed. Forest Sci. 28:71-78.

Keywords: Pinus elliottii; chlorophyll mutants; gene markers; inbreeding

Document Type: Journal Article

Affiliations: Professor, School of Forest Resources and Conservation, University of Florida, Gainesville, Fla.

Publication date: 1982-03-01

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

    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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