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Soaking Time and Water Temperature Impact on Creeping Bentgrass Seed Germination

Published online by Cambridge University Press:  20 January 2017

Maria Luz Zapiola  and
Carol Ann Mallory-Smith
Maria Luz Zapiola*
Affiliation:
Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97331
Carol Ann Mallory-Smith
Affiliation:
Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97331
*
Corresponding author's E-mail: maria.zapiola@oregonstate.edu
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Abstract

Seed deterioration, and therefore seed germination potential, are highly influenced by relative humidity and temperature. However, limited species-specific information is available about the effect of long-term soaking in water on seed germination potential. Knowing the potential fate of a creeping bentgrass seed that falls in an irrigation canal is important for the study of transgene flow in this species at the landscape level. The objectives of this study were to evaluate the effect of soaking time and water temperature on germination of creeping bentgrass seed and to assess how fast a panicle could be moved in an irrigation canal. Germination was determined for seeds from panicles of three cultivars of creeping bentgrass that were soaked in water for up to 17 wk at two water temperatures, 4 and 20 C. Creeping bentgrass seeds did not lose their ability to germinate after 17 wk in water at 20 C and, although reduced, germination was still 46% after 17 wk in water at 4 C. The reduction in germination in seeds from panicles kept in water at 4 C was due to the induction of secondary dormancy, which was overcome by dry seed storage at room temperature. We quantified that a panicle that falls in an irrigation canal has the potential to travel downstream at an average rate of 19 m min−1 and move seeds that could potentially establish seedlings elsewhere. Therefore, movement of creeping bentgrass seed by water has to be considered as a means of gene flow.

Keywords

Creeping bentgrass, Agrostis stolonifera LSeed longevitygene flowseed dispersalseed movementsecondary dormancypanicle dispersal
Type
Weed Biology and Ecology
Information
Weed Science , Volume 58 , Issue 3 , September 2010 , pp. 223 - 228
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: Researcher, Facultad de Ciencias Agrarias, Universidad Católica Argentina, Buenos Aires, 1426, Argentina.

References

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