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A Low Temperature-Gradient Bar for Seed Germination Studies

Published online by Cambridge University Press:  12 June 2017

Raymond A. Evans ,
James A. Young ,
Robert Henkel  and
Gerard J. Klomp
Raymond A. Evans
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
James A. Young
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
Robert Henkel
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
Gerard J. Klomp
Affiliation:
Crops Research Division, Agr. Res. Serv., U. S. Dep. of Agr., Reno, Nevada
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Abstract

A relatively inexpensive, cold-temperature germination bar was constructed. The optimum temperature gradient of the bar for our low-temperature seed germination studies ranged from −4 to 11 C. An independent compressor and a chest-type deep freeze were compared for cooling sources. Alumnium foil Petri dishes were developed for use on the bar.

Type
Research Article
Information
Weed Science , Volume 18 , Issue 5 , September 1970 , pp. 575 - 576
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Barbour, M. C. and Racine, C. H. 1967. Construction and performance of a temperature-gradient bar and chamber. Ecology 48:861–863.Google Scholar
2. Evans, R. A., Holbo, H. R., Eckert, R. E. Jr., and Young, J. A. 1970. Functional environment of downy brome communities in relation to weed control and revegetation. Weed Sci. 18:154–162.Google Scholar
3. Wagner, R. H. 1967. Application of a thermal gradient bar to the study of germination patterns in successional herbs. Amer. Midland Natur. 77:86–92.Google Scholar