Agronomy Journal Grow Your Career With ASA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published online 1 November 1990
Published in Agron J 82:1103-1107 (1990)
© 1990 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Emmerich, W. E.
Right arrow Articles by Hardegree, S. P.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Emmerich, W. E.
Right arrow Articles by Hardegree, S. P.
Agricola
Right arrow Articles by Emmerich, W. E.
Right arrow Articles by Hardegree, S. P.

Polyethylene Glycol Solution Contact Effects on Seed Germination

William E. Emmerich* and Stuart P. Hardegree

USDA-ARS, Aridland Watershed Manage. Res. Unit, Tucson, AZ 85719

* Corresponding author.

While polyethylene glycol (PEG) solutions have been used to control water potential in numerous seed germination investigations, there is concern that PEG solution-seed contact may reduce seed germination. The PEG solution-seed contact effect on seed germination was evaluated on four grass species: sideoats grama [Bouteloua curtipendula (Michaux) Torrey], buffelgrass [Cenchrus ciliaris L.], Lehmann lovegrass [Eragrostis lehmanniana Nees], and kleingrass [Panicum coloratum L.]. A water potential control system for seed germination was developed that controlled PEG (8000 mol. wt.) solution-seed contact. Seeds were germinated on filter paper and ellulose membrane over the water potential range of 0.0 to –1.62 MPa. Buffelgrass and Lehmann lovegrass 21-d germination and germination rate index (GRI) were not affected by PEG solution-seed contact. Sideoats grama and kleingrass showed reduced germination and GRI without PEG solution contact on the cellulose membrane. The reduction was attributed to the hydraulic conductivity at the seedwater- membrane contact point which was influenced by PEG solution water potential and seed size and shape. Therefore, it was concluded EG solution-seed contact does not reduce seed germination.

Received for publication February 7, 1990.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1990 by the American Society of Agronomy.