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Reversal of the Effects of a Night Interruption in Lemna by Inhibitors of Ribonucleic Acid Synthesis ^1,2

^a Department of Environmental Horticulture, University of California, Davis, California 95616

The inhibition of flowering of Lemna perpusilla Torr. strain 6746 caused by a light break can be partially reversed by treatment with actinomycin D or 2-thiouracil. Actinomycin D is most active in reversing the response to a light break if the inhibitor is present in the fronds at the time the light break is administered.

¹ This research was supported in part by a Chancellor's Patent Fund Grant and a Priority C Research Grant, University of California, Davis.

² A portion of this report is taken from a dissertation submitted in partial fulfillment of the requirements for a Ph.D. degree in Plant Physiology at the University of California, Davis.