Skip to main content

Main menu

  • Home
  • Content
    • Current
    • Archive
  • Info for
    • Authors
    • Subscribers
    • Institutions
    • Advertisers
  • About Us
    • About Us
    • Editorial Board
    • Index/Abstracts
  • Connect
    • Feedback
    • Help
  • Alerts
  • Other Publications
    • UWP

User menu

  • Register
  • Subscribe
  • My alerts
  • Log in

Search

  • Advanced search
Native Plants Journal
  • Other Publications
    • UWP
  • Register
  • Subscribe
  • My alerts
  • Log in
Native Plants Journal

Advanced Search

  • Home
  • Content
    • Current
    • Archive
  • Info for
    • Authors
    • Subscribers
    • Institutions
    • Advertisers
  • About Us
    • About Us
    • Editorial Board
    • Index/Abstracts
  • Connect
    • Feedback
    • Help
  • Alerts
  • Follow uwp on Twitter
  • Visit uwp on Facebook
Research ArticleRefereed Research

Breaking primary seed dormancy in Gibbens’ beardtongue (Penstemon gibbensii) and blowout penstemon (Penstemon haydenii)

Kassie L Tilini, Susan E Meyer and Phil S Allen
Native Plants Journal, September 2016, 17 (3) 256-266; DOI: https://doi.org/10.3368/npj.17.3.256
Kassie L Tilini
Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84602,
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: [email protected]
Susan E Meyer
Research Ecologist, USDA Forest Service, Rocky Mountain Research Station, 735 North 500 East, Provo, UT 84606,
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: [email protected]
Phil S Allen
Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84602,
  • Find this author on Google Scholar
  • Find this author on PubMed
  • Search for this author on this site
  • For correspondence: [email protected]
  • Article
  • Info & Metrics
  • References
  • PDF
Loading

Abstract

This study established that chilling removes primary seed dormancy in 2 rare penstemons of the western US, Gibbens’ beardtongue (Penstemon gibbensii Dorn [Scrophulariaceae]) and blowout penstemon (Penstemon haydenii S. Watson). Wild-harvested seeds were subjected either to moist chilling at 2 to 4 °C (36–39 °F) for 0, 4, 8, 12, and 16 wk or to approximately 2 y of dry storage. Seeds of both species were dormant at harvest and responded positively to chilling. Penstemon gibbensii germination increased linearly with length of chilling, and collections from sites with longer winters required a longer chilling period to break dormancy. With longer chilling durations, most seeds germinated during the chilling treatment. Penstemon haydenii germination increased to nearly 100% after 4 or more wk of chilling followed by incubation under a cool, diurnally alternating temperature regime (10–20 °C [50–68 °F]) but did not germinate during chilling treatments regardless of duration. Under constant (15, 20, 25 °C [59, 68, 77 °F]) or warmer (15–25 °C, 20–30 °C [59–77 °F, 68–86 °F]) alternating post-chilling temperature regimes, germination was consistently < 15%. Without chilling, dry storage increased germination (from 0–15%) in P. haydenii. By contrast, P. gibbensii seeds showed no increase in germination following dry storage, where germination in both recently harvested and 2-y-stored seeds averaged 16% without chilling. These insights will assist propagation and reintroduction strategies for restoring populations of these rare species.

  • alternating temperature
  • cold stratification
  • dry after-ripening
  • habitat-correlated
  • pre-chilling
  • seed germination
  • Scrophulariaceae
NOMENCLATURE
  • USDA NRCS (2016)
  • © 2016 by the Board of Regents of the University of Wisconsin System
PreviousNext
Back to top

In this issue

Native Plants Journal: 17 (3)
Native Plants Journal
Vol. 17, Issue 3
21 Sep 2016
  • Table of Contents
  • Table of Contents (PDF)
  • Index by author
  • Front Matter (PDF)
Download PDF
Article Alerts
Sign In to Email Alerts with your Email Address
Email Article

Thank you for your interest in spreading the word on Native Plants Journal.

NOTE: We only request your email address so that the person you are recommending the page to knows that you wanted them to see it, and that it is not junk mail. We do not capture any email address.

Enter multiple addresses on separate lines or separate them with commas.
Breaking primary seed dormancy in Gibbens’ beardtongue (Penstemon gibbensii) and blowout penstemon (Penstemon haydenii)
(Your Name) has sent you a message from Native Plants Journal
(Your Name) thought you would like to see the Native Plants Journal web site.
Citation Tools
Breaking primary seed dormancy in Gibbens’ beardtongue (Penstemon gibbensii) and blowout penstemon (Penstemon haydenii)
Kassie L Tilini, Susan E Meyer, Phil S Allen
Native Plants Journal Sep 2016, 17 (3) 256-266; DOI: 10.3368/npj.17.3.256

Citation Manager Formats

  • BibTeX
  • Bookends
  • EasyBib
  • EndNote (tagged)
  • EndNote 8 (xml)
  • Medlars
  • Mendeley
  • Papers
  • RefWorks Tagged
  • Ref Manager
  • RIS
  • Zotero
Share
Breaking primary seed dormancy in Gibbens’ beardtongue (Penstemon gibbensii) and blowout penstemon (Penstemon haydenii)
Kassie L Tilini, Susan E Meyer, Phil S Allen
Native Plants Journal Sep 2016, 17 (3) 256-266; DOI: 10.3368/npj.17.3.256
Digg logo Reddit logo Twitter logo Facebook logo Mendeley logo
  • Tweet Widget
  • Facebook Like
  • Google Plus One
Bookmark this article

Jump to section

  • Article
  • Info & Metrics
  • References
  • PDF

Related Articles

  • No related articles found.
  • Google Scholar

Cited By...

  • No citing articles found.
  • Google Scholar

More in this TOC Section

  • Cutting propagation of 4 Florida native taxa of wild coffee (Psychotria spp.)
  • Evaluating the use of woody debris to enhance native plant establishment from seeds on legacy coal mines in West Virginia (USA)
  • Seedling emergence and seed production of curlycup gumweed
Show more Refereed Research

Similar Articles

Keywords

  • alternating temperature
  • cold stratification
  • dry after-ripening
  • habitat-correlated
  • pre-chilling
  • seed germination
  • Scrophulariaceae
  • USDA NRCS (2016)
UWP

© 2023 The Board of Regents of the University of Wisconsin System

Powered by HighWire