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.

Conditions Affecting Germination of the Megaspores of Isoetes Lithophila

Charles LaMotte
American Journal of Botany
Vol. 24, No. 7 (Jul., 1937), pp. 454-456
Stable URL: http://www.jstor.org/stable/2436432
Page Count: 3
  • Read Online (Free)
  • Download ($12.00)
  • 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.
Conditions Affecting Germination of the Megaspores of Isoetes Lithophila
Preview not available

Abstract

The action of indole acetic, indole butyric, and naphthalene acetic acids on root growth of Lupinus albus seedlings was studied with particular reference to the effects of very dilute concentrations of the drugs and short exposures thereto. It was found that growth of roots of Lupinus albus seedlings was definitely stimulated after a brief exposure to a weak solution of any of the three chemicals studied. On the contrary, longer exposures to the same concentration or exposures for a brief period to stronger concentrations invariably produced a toxic or inhibitory effect on root growth of Lupinus albus.

Page Thumbnails

  • Thumbnail: Page 
454
    454
  • Thumbnail: Page 
455
    455
  • Thumbnail: Page 
456
    456