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Seasonal Variation in Flowering of Common Dandelion

Published online by Cambridge University Press:  12 June 2017

Elmer Gray ,
Eugene M. McGehee  and
Don F. Carlisle
Elmer Gray
Affiliation:
Dep. of Agr., Western Kentucky Univ., Bowling Green, KY. 42101
Eugene M. McGehee
Affiliation:
Dep. of Agr., Western Kentucky Univ., Bowling Green, KY. 42101
Don F. Carlisle
Affiliation:
Dep. of Agr., Western Kentucky Univ., Bowling Green, KY. 42101
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Abstract

Seasonal variation in flowering of common dandelion (Taraxacum officinale Weber) was studied in 1969 and 1970 at Bowling Green, Kentucky. At this location the dandelion flowered throughout the year. Maximum flowering occurred during April and a secondary peak occurred in September and October. Number of flower stems per square meter was not significantly correlated with precipitation, temperature, or day length. Length of stem was positively correlated with temperature and day length. The plants exhibited diurnal variation in flowering habit. Number of times (or days) the heads opened and closed, length of time in which the heads remained open each day, and length of time heads remained closed before opening into mature heads (white balls) varied with time of year.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 3 , May 1973 , pp. 230 - 232
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

1. Beach, F. 1939. Dandelions. Amer. Bee J. 79:238–239.Google Scholar
2. U.S. Department of Commerce Weather Bureau. 1969. Climatological data for Kentucky, U.S. Government Printing Office, Washington, D.C. 172 pp.Google Scholar
3. Fernald, M. L. 1950. Gray's manual of botany. 8th Ed., American Book Company, New York, N.Y. 1632 pp.Google Scholar
4. Free, J. B. and Nuttall, P. M. 1968. Effect of the time of day at which honeybee colonies are first allowed flight in a new location on their choice of flower species. Nature 218:982.Google Scholar
5. Listowski, A. and Jackowska, I. 1965. Observations on plant development. XI On the rhythm of flowering of Taraxacum officinale . Acta Soc. Bot. Pol. 34:549–561.Google Scholar
6. Roberts, H. F. 1936. Seed production in the dandelion. Sci. Agr. 17:235–242.Google Scholar
7. Solbrig, Otto T. 1971. The population biology of dandelions. Amer. Sci. 59:686–694.Google Scholar