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Germination of Dandelion Seed on a Thermogradient Plate

Published online by Cambridge University Press:  12 June 2017

P. R. Mezynski  and
D. F. Cole
P. R. Mezynski
Affiliation:
AMRI, ARS, USDA, Beltsville, MD
D. F. Cole
Affiliation:
AMRI, ARS, USDA, Beltsville, MD
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Abstract

Fresh and stored dandelion (Taraxacum officinale Weber) seeds were studied to determine the germination response to a range of constant and alternating temperature regimes on thermogradient plates. Germination was initiated over a wide range of temperatures. Maximum germination of fresh seed occurred at an alternating temperature of 20 C for 16 hr and 10 C for 8 hr. Seed stored for 30 days germinated best at 20 C for 16 hr and 15 C for 8 hr. In addition to the shift in germination requirement, dormancy increased during the 30-day storage, especially at −15 C.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 5 , September 1974 , pp. 506 - 507
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

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