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Genetic Variation Among and Within Three Loblolly Pine Stands in Georgia

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Wind-pollinated seeds were collected from loblolly pine stands in the Flatwoods, Upper Coastal Plain, and Piedmont of Georgia and outplanted in the Upper Coastal Plain. At age 15, differences among provenances were highly significant for survival, height, dbh, tree and plot volumes, and resistance to fusiform rust. Differences among mother trees within provenances were highly significant for survival, height, volume per plot, and stem crook. There was more variation among provenantes than among mother trees within provenances for all traits except volume per plot, for which the two sources of variation were about equal. Additive genetic variances based on mother trees without regard to provenance were 1.5 to 17.0 times greater than those based on mother trees within provenances. In conclusion, selections should be made among provenances first and then among mother trees within provenances. Forest Sci. 20:272-275.
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Keywords: Physiographic region; Pinus taeda; additive genetic variance; mother tree; provenance

Document Type: Journal Article

Affiliations: Associate Plant Geneticist, USDA Forest Service, Southeast. For. Exp. Stn. Macon, Ga. 31208

Publication date: 1974-09-01

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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