Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Effect of Salinity on Seed Germination, Growth, and Ion Accumulation of Atriplex patula (Chenopodiaceae)

Irwin A. Ungar
American Journal of Botany
Vol. 83, No. 5 (May, 1996), pp. 604-607
Stable URL: http://www.jstor.org/stable/2445919
Page Count: 4
  • Read Online (Free)
  • Download ($12.00)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Effect of Salinity on Seed Germination, Growth, and Ion Accumulation of Atriplex patula (Chenopodiaceae)
Preview not available

Abstract

Seeds and seedlings of the halophyte Atriplex patula were exposed to 0-2% NaCl to determine the effect of salt stress on germination and growth Seeds germinated and plants survived and grew in solutions of up to 2 0% NaCl. Both seed germination and dry mass production were negatively affected by increased salinity Dry mass production declined to 1% of controls and seed germination to 17% of controls in the 2% NaCl treatments, indicating that seeds were less inhibited than growing plants Also, recovery treatments indicated that high salinity did not permanently injure seeds Percent ash, and Na- and Cl- ions increased in shoots with each salt increment, while the K+ ion content decreased sharply Atriplex patula is a facultative halophyte, and is limited to low and moderately saline sites because both seed germination and growth are severely reduced at salinities > 1% NaCl

Page Thumbnails

  • Thumbnail: Page 
604
    604
  • Thumbnail: Page 
605
    605
  • Thumbnail: Page 
606
    606
  • Thumbnail: Page 
607
    607