Skip to page content
USDA Forest Service

Research & Development Treesearch

Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help - We Participate  Government Made Easy

Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (320 K bytes)

Title: Origin of the flax cultivar 'Appar' and its position within the Linum perenne complex

Author: Pendleton, Rosemary L.; Kitchen, Stanley G.; Mudge, Joann; McArthur, E. Durant;

Date: 2008

Source: International journal of plant sciences. 169(3): 445-453.

Publication Series: Miscellaneous Publication

Description: The 'Appar' flax germplasm was originally released by the USDA Soil Conservation Service as a cultivar of Linum lewisii. The observation that 'Appar' is heterostylic, a key taxonomic character distinguishing Lewis flax from other members of the Linum perenne complex, created a need for further study in order to resolve the taxonomic position of both Lewis flax and the 'Appar' cultivar. We grew 10 plants each of nine European, nine North American, and three putative 'Appar' seed sources, measured 18 morphologic variables on each plant, and examined genetic variation using randomly amplified polymorphic DNA (RAPD). We also performed self- and cross-pollinations within and among source groups.North American collections differed from European collections for 12 of the 18 morphologic variables. 'Appar' collections were morphologically similar to European collections and differed from North American collections for 13 of the 18 variables. RAPD data also showed that 'Appar' sources clustered with European, and both were distinct from North American sources. European and 'Appar' collections were self-sterile and interfertile, whereas North American collections were self-fertile but reproductively isolated from European and 'Appar' collections. We conclude that L. lewisii is a distinct species within the L. perenne complex and that 'Appar' should be classified as L. perenne. This study provides an example of how questions regarding origin and/or taxonomy of plant materials developed for restoration can be resolved.

Keywords: heterostyly, Linum lewisii, native plants, revegetation, morphometrics, RAPDs

Publication Notes:

  • 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.
  • You may send email to to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)



Pendleton, Rosemary L.; Kitchen, Stanley G.; Mudge, Joann; McArthur, E. Durant 2008. Origin of the flax cultivar ''Appar'' and its position within the Linum perenne complex. International journal of plant sciences. 169(3): 445-453.


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.