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Germination of Previously Buried Seeds of Fringed Sage (Artemisia frigida)

Published online by Cambridge University Press:  12 June 2017

Yuguang Bai  and
J. T. Romo
Yuguang Bai
Affiliation:
Dep. Crop Sci. and Plant Ecol., Univ. Saskatchewan, Saskatoon, Canada S7N 0W0
J. T. Romo
Affiliation:
Dep. Crop Sci. and Plant Ecol., Univ. Saskatchewan, Saskatoon, Canada S7N 0W0
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Abstract

Seeds of fringed sage were collected in four different years in the Northern Mixed Prairie and placed in sealed vials in the field for up to 5 yr. The seeds were exhumed monthly and incubated at 10 or 20 C in light or darkness. Germination was greater at 10 than 20 C and greater in light than darkness. The overriding influences of light and temperature generally decreased as seeds aged. No well-defined dormancy/nondormancy or conditional dormancy/nondormancy cycles were revealed. Longevity of seeds varied among collections, ranging from 3½ to more than 5 yr. Patterns in germination of different collections were similar when they experienced the same annual changes in temperatures, indicating that germination of previously buried seeds of fringed sage was regulated by temperature. This regulating effect varied among years of storage; germination either increased or decreased with increasing temperatures, or was not affected. Results suggest that fringed sage seeds can germinate and emerge anytime during the growing season if temperature and moisture conditions are suitable. Continuous germination may enable fringed sage to occupy safe sites as they develop over time.

Keywords

Fringed sage, Artemisia frigida Willd. # ARTFRConditional dormancygermination ecologylightseed agetemperatureARTFR
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 42 , Issue 3 , September 1994 , pp. 390 - 397
Copyright
Copyright © 1994 by the Weed Science Society of America 

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