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

    Description

    The ultimate goal of any tree improvement program is the large-scale production and distribution of genetically improved seedlings. In black walnut, projections based on earlier research indicate that genetically improved seedlings could provide growth improvement of between 15 to 25 percent by using seed or seedlings of the proper geographic origin (Bey 1980; Clausen 1981; Deneke et al. 1987) and additional gains of similar magnitude from progeny testing (Rink 1984). Unfortunately, the large-scale production of such genetically improved seedlings has yet to become a reality. The purpose of this paper is to briefly outline how far we've come in walnut improvement programs between 1967 and 1987 and how far we still need to go.
    This article was originally published in 1987 in the Walnut Council Bulletin 14(2): 3-5. 2017 updates are in italics.

    Publication Notes

    • Check the Northern Research Station web site to request a printed copy of this publication.
    • Our on-line publications are scanned and captured using Adobe Acrobat.
    • During the capture process some typographical errors may occur.
    • Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.
    • 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

    Rink, George; Van Sambeek, J.W.; O'Connor, Phil; Coggeshall, Mark. 2017. Practical strategies of black walnut genetic improvement—an update. Walnut Council Bulletin. 44(2): 1-3, 10-11.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/54216