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Inhibition of flowering and growth in Pharbitis nil by the growth retardant Ancymidol
Authors:Suge  Hiroshi
Institution:Institute for Agricultural Research, Tohoku University Katahira, Sendai 980, Japan
Abstract:Flower formation and growth of the short day plant Pharbitisnil, strain "Violet", were inhibited when the growth retardantAncymidol was applied prior to an inductive dark period viacotyledons or roots. Inhibition of flower formation by Ancymidolcould be completely reversed by an application of gibberellinA3 (GA3) to the plumule before the inductive dark period. Adose of 0.01 µg GA3/plant was almost sufficient to restoreflowering, but about a hundred times more GA3 was required torestore the internode length to that of control. Ancimidol greatlyreduced the endogenous gibberellin content. (Received July 18, 1980; )
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