Plant Physiol. Bio-Rad Microplate Reader
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Plant Physiology 43:1883-1886 (1968)
© 1968 American Society of Plant Biologists

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The Circadian Rhythm of Leaf Movement of Coleus blumei x C. frederici, a Short Day Plant. I. Under Constant Light Conditions 1,2

Ruth Halaban

Department of Biology, Princeton University, Princeton, New Jersey 08540

A new instrument for the recording of leaf movement rhythm is described. Coleus blumei x C. frederici, a short day plant, exhibits a circadian rhythm of leaf movement. The period length of the free running rhythm is shortest in continuous darkness and is increased with an increase in the light intensity. The amplitude of the rhythm tends to damp in continuous bright light.

1 The material presented in this paper is a part of a dissertation submitted to the Department of Biology, Princeton University in partial fulfillment of the requirements for the degree of Doctor of Philosophy.

2 Supported in part by a NSF grant to Dr. W. P. Jacobs.






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ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1968 by the American Society of Plant Biologists