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 Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Cell Water Potential Components in the Adaptation of Pseudoroegneria spicata (Pursh) A. Löve to Various Habitat Moisture Conditions

Margaret S. Dibble and George G. Spomer
Botanical Gazette
Vol. 148, No. 1 (Mar., 1987), pp. 73-78
Stable URL: http://www.jstor.org/stable/2995385
Page Count: 6
  • Read Online (Free)
  • Download ($19.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Cell Water Potential Components in the Adaptation of Pseudoroegneria spicata (Pursh) A. Löve to Various Habitat Moisture Conditions
Preview not available

Abstract

Tissue water potential components were measured over 2 growing seasons from the pressure-volume relations of leaf samples from three populations of bluebunch wheatgrass, Pseudoroegneria spicata, growing in different moisture conditions. Osmotic potentials differed among sites and declined as soil moisture decreased. Plants from each site grown in the same greenhouse exhibited differences in osmotic potentials and bulk elastic moduli, but the differences did not correspond to apparent habitat conditions. The ability to acclimate, rather than ecotypic differences, appears to explain the distribution of P. spicata in a wide range of moisture conditions.

Page Thumbnails

  • Thumbnail: Page 
73
    73
  • Thumbnail: Page 
74
    74
  • Thumbnail: Page 
[75]
    [75]
  • Thumbnail: Page 
76
    76
  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78