Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-28T17:48:32.359Z Has data issue: false hasContentIssue false
  • English
  • Français

Germination of Two Noxious Range Weeds Under Water and Salt Stresses with Variable Light Regimes

Published online by Cambridge University Press:  20 January 2017

Larry Larson  and
Gary Kiemnec
Larry Larson*
Affiliation:
Department of Rangeland Resources, Oregon State University, Corvallis, OR 97331
Gary Kiemnec
Affiliation:
Department of Crop and Soil science, Oregon State University, Corvallis, OR 97331
*
Corresponding author's E-mail: llarson@eou.edu
Get access Rights & Permissions [Opens in a new window]

Abstract

Russian knapweed and perennial pepperweed are invasive to meadow and riparian habitats in the semiarid intermountain west. Seed germination was tested to determine favored seedbed characteristics. Germination was inhibited in both species when water stress was imposed using polyethylene glycol. Knapweed achieved 60% germination after 40 d in dark and alternating light/dark environments. Pepperweed germination was greatest (30% after 14 d) in light and alternating light/ dark environments. Both species showed that germination declines when exposed to salt stress but continued to germinate under salt stress as high as 16 dSm−1.

Keywords

Perennial pepperweed, Lepidium latifolium L. # LEPLARussian knapweed, Centaurea repens L. # CENRERiparian habitatsseedbed ecology
Type
Research Article
Information
Weed Technology , Volume 19 , Issue 1 , March 2005 , pp. 197 - 200
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Bewley, J. and Black, M. 1994. Seeds: Physiology of Development and Germination. 2nd ed. New York: Plenum. Pp. 66–70.Google Scholar
Bottoms, R. and Whitson, T. 1998. A systems approach for the management of Russian knapweed (Centaurea repens). Weed Technol. 12:363–366.Google Scholar
Bradbeer, J. 1988. Seed Dormancy and Germination. New York: Chapman and Hall. Pp. 237–246.Google Scholar
Hardegree, S. and Emmerich, W. 1990. Effect of polyethylene glycol exclusion on the water potential of solution-saturated filter paper. Plant Physiol 92:463–466.Google Scholar
Harper, J. 1983. The Population Biology of Plants. London: Academic. Pp. 114–117.Google Scholar
Luken, J. 1990. Directing Ecological Succession. New York: Chapman and Hall. Pp. 169–178.Google Scholar
Miller, G., Young, J., and Evans, R. 1986. Germination of seeds of perennial pepperweed (Lepidium latifolium). Weed Sci. 34:252–255.Google Scholar
Miller, R. and Donahue, R. 1990. Soils: An Introduction to Soils and Plant Growth. Englewood Cliffs, NJ: Prentice-Hall P. 315.Google Scholar
Richards, L. 1954. Diagnosis and improvement of saline and alkali soils. In USDA Agricultural Handbook No. 60. Washington, DC: U.S. Government Printing Office.Google Scholar
Roundy, B., Evans, R., and Young, J. 1984. Surface soil and seedbed ecology in salt-desert plant communities. in Tiedemann, A., McArthur, E., Stutz, H., Stevens, R., and Johnson, K., compilers. Proceeding—Symposium on the Biology of Atriplex and Related Chenopods; Provo, UT; May 2– 6, 1983. General Technical Report INT-172. Ogden, UT: USDA Forest Service. Pp. 66–74.Google Scholar
Watson, A. 1980. The biology of Canadian weeds. 43. Acroptilon (Centaurea) repens (L.) DC. Can. J. Plant Sci 60:993–1004.Google Scholar