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): Sarbottam Piya; Madhav P. Nepal; Jack L. Butler; Gary E. Larson; Achal Neupane
    Date: 2014
    Source: Biological Invasions
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (688.35 KB)

    Description

    Sickleweed (Falcaria vulgaris), an introduced species native to Europe and Asia, grows as an aggressive weed in some areas of the upper Midwest in the United States. We are reporting genetic diversity and population structure of sickleweed populations using microsatellite markers and nuclear and chloroplast DNA sequences. Populations showed high genetic differentiation but did not show significant geographic structure, suggesting random establishment of different genotypes at different sites was likely due to human mediated multiple introductions. Three genetic clusters revealed by microsatellite data and presence of six chlorotypes supported our hypothesis of multiple introductions. Chloroplast DNA sequence data revealed six chlorotypes nested into two main lineages suggesting at least two introductions of sickleweed in the upper Midwest. Some individuals exhibited more than two alleles at several microsatellite loci suggesting occurrence of polyploidy, which could be a post-introduction development to mitigate the inbreeding effects. High genetic variation in the introduced range attributable to multiple introductions and polyploidy may be inducing the evolution of invasiveness in sickleweed. Results of this study provide valuable insights into the evolution of sickleweed and baseline data for designing proper management practices for controlling sickleweed in the United States.

    Publication Notes

    • You may send email to rmrspubrequest@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

    Piya, Sarbottam; Nepal, Madhav P.; Butler, Jack L.; Larson, Gary E.; Neupane, Achal 2014. Genetic diversity and population structure of sickleweed (Falcaria vulgaris; Apiaceae) in the upper Midwest USA. Biological Invasions. 16(10): 2115-2125.

    Cited

    Google Scholar

    Keywords

    chlorotypes, Falcaria vulgaris, microsatellite, polyploidy trnL-trnF, trnQ-rps16

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page