Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-06-24T09:51:27.690Z Has data issue: false hasContentIssue false
  • English
  • Français

Moisture Stress and Hydration-Dehydration Effects on Hemp Sesbania (Sesbania exaltata) Seed Germination

Published online by Cambridge University Press:  12 June 2017

Robert D. Williams
Robert D. Williams*
Affiliation:
U.S. Dep. Agric., Sci. Ed. Admin., Agric. Res., Southern Plains Watershed and Water Quality Lab., 801 Wilson Street, Durant, OK 74701
Get access Rights & Permissions [Opens in a new window]

Abstract

Increased osmotic potential from 0 to −14 bars decreased the moisture uptake and germination of mechanically scarified hemp sesbania [Sesbania exaltata (Raf.) Cory] seed. Germination percentage for osmotic potential of 0, −2, −4, −6, and −8 bars was 86%, 86%, 70%, 19%, and 1%, respectively. This response to moisture stress was modified by imbibition, or hydration-dehydration, of the seed prior to the moisture stress. Imbibing the seed for as little as 2 h significantly increased its subsequent germination against moisture stress. One hydration-dehydration cycle had little or no effect on germination, but as the number of cycles increased, the germination percentage decreased. Prolonged hydration of 3 and 7 days followed by dehydration greatly reduced subsequent seed germination.

Keywords

Osmotic potentialimbibitionwater relations
Type
Research Article
Information
Weed Science , Volume 28 , Issue 5 , September 1980 , pp. 487 - 492
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

1. Berrie, A. M. M. and Drennan, D. S. H. 1971. The effect of hydration on seed germination. New Phytol. 70:135–142.CrossRefGoogle Scholar
2. Ching, T. M. 1972. Metabolism of germinating seeds. Pages 103–218 in Kozlouchi, T. T., ed., Seed Biology, Vol. II. Academic Press, New York.Google Scholar
3. Hadas, A. 1976. Water uptake and germination of leguminous seeds under changing external water potential in osmotic solution. J. Expt. Bot. 27:480–489.CrossRefGoogle Scholar
4. Hegarty, T. W. 1977. Seed activation and seed germination under moisture stress. New Phytol. 78:349–359.Google Scholar
5. Hegarty, T. W. 1978. The physiology of seed hydration and dehydration, and the relation between water stress and the control of germination: A review. Plant, Cell and Environ. 1:101–119.Google Scholar
6. Johnston, S. K., Murray, D. S., and Williams, J. C. 1979. Germination and emergence of balloonvine (Cardisplemum halicacabam . Weed Sci. 27:73–76.Google Scholar
7. Johnston, S. K., Wallier, R. H., and Murray, R. S. 1979. Germination and emergence of hemp sesbania (Sesbania exaltata . Weed Sci. 27:290–293.Google Scholar
8. McDonough, W. T. 1975. Water potential for germinating seeds. Bot. Gaz. 136:106–108.Google Scholar
9. Michel, B. E. and Kaufmann, M. R. 1973. The osmotic potential of polyethylene glycol 6000. Plant Physiol. 51:914–916.Google Scholar
10. Vincent, E. M. and Cavers, P. B. 1978. The effect of wetting and drying on the subsequent germination of Rumex crispus . Can. J. Bot. 56:2207–2217.Google Scholar
11. Wilson, R. G. 1979. Germination and seedling development of Canada thistle (Cirsium arvense . Weed Sci. 27:146–151.Google Scholar