Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Constance I. Millar; Kimberly A. Marshall
    Date: 1991
    Source: Forest Science. Vol. 37(4):p. 1060-1077
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (637 KB)

    Description

    Variation at 32 allozyme loci in nine disjunct populations of Part-Orford-cedar (POC) from the California floristic region was measured to estimate the amount and pattern of genetic variability in natural stands. Variation in electrophoretically detectable loci was moderately high, with mean number of alleles per locus = 1.9, 64.9% polymorphic loci, and observed heterozygosity = 0.13. Diversity was highest in the seven populations from the coastal mountains and lowest in the two populations from the inland portion of POC's distribution. The Sacramento River population in the inland group had only 44% polymorphic loci, and observed heterozygosity equaled 0.05. Populations in the inland region were allozymically distinct from those in the coastal region as well as from each other. Mean genetic distances among the coastal populations were 0.005 compared to 0.016 between the inland and coastal groups and 0.013 between inland populations. Population variation accounted for 5% of the total allozyme diversity. Genetic conservation efforts for POC in California are evaluated. In situ areas are already being established in some genetically important localities, although many gaps remain; ex situ coverage is inadequate.

    Publication Notes

    • You may send email to psw_communications@fs.fed.us to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Millar, Constance I.; Marshall, Kimberly A. 1991. Allozyme variation of Port-Orford-Cedar (Chamaecyparis lawsoniana): implications for genetic conservation. Forest Science. Vol. 37(4):p. 1060-1077

    Keywords

    Phytophthora lateralis, genetic diversity, isozymes

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/31859