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): Jonathan M. Friedman; James E. Roelle; Brian S. Cade
    Date: 2012
    Source: In: Haase, D. L.; Pinto, J. R.; Riley, L. E., tech. coords. National Proceedings: Forest and Conservation Nursery Associations - 2011. Proc. RMRS-P-68. Fort Collins, CO: USDA Forest Service, Rocky Mountain Research Station. p. 82-85.
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (407.62 KB)

    Description

    To explore latitudinal genetic variation in cold hardiness and leaf phenology, we planted a common garden of paired collections of native and introduced riparian trees sampled along a latitudinal gradient. The garden in Fort Collins, Colorado (latitude 40.6°N), included 681 native plains cottonwood (Populus deltoides subsp. monilifera) and introduced saltcedar (Tamarix ramosissima, T. chinensis, and hybrids) collected from 15 sites from 29.2 to 47.6°N in the central United States. In the common garden, both species showed latitudinal variation in fall, but not spring, leaf phenology. This suggests that latitudinal gradient field observations in fall phenology are a result, at least in part, of the inherited variation in the critical photoperiod. Conversely, the latitudinal gradient field observations in spring phenology are largely a plastic response to the temperature gradient. Populations from higher latitudes exhibited earlier bud set and leaf senescence. Cold hardiness varied latitudinally in both fall and spring for both species. Although cottonwood was hardier than saltcedar in midwinter, the reverse was true in late fall and early spring. The latitudinal variation in fall phenology and cold hardiness of saltcedar appears to have developed as a result of multiple introductions of genetically distinct populations, hybridization, and natural selection in the 150 years since introduction.

    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

    Friedman, Jonathan M.; Roelle, James E.; Cade, Brian S. 2012. Genetic and environmental influences on cold hardiness of native and introduced riparian trees. In: Haase, D. L.; Pinto, J. R.; Riley, L. E., tech. coords. National Proceedings: Forest and Conservation Nursery Associations - 2011. Proc. RMRS-P-68. Fort Collins, CO: USDA Forest Service, Rocky Mountain Research Station. p. 82-85.

    Keywords

    cold hardiness, latitude, phenology, Populus deltoides, rapid evolution, Tamarix

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/42743