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Induction of stem elongation on in vitro chicory root explants under unfavourable photoperiodic conditions by gibberellin A3
Authors:M A C Demeulemeester  A Voet  M P De Proft
Institution:(1) Faculty of Agricultural and Applied Biological Sciences, Katholieke Universiteit Leuven, Willem de Croylaan 42, B-3001 Heverlee, Belgium
Abstract:Flowering stems are formed under long-day conditions on root explants of chicory (Cichorium intybus L.) cultured in vitro while under short days, only vegetative growth is observed. Under short-day conditions (12 h), stem elongation is induced by treating newly formed shoot apices with GA3 (1 mgrl, 10–3M). No flower buds were formed on the GA3-induced stems. Long days seem to be indispensable for the induction of flower buds on the elongated stem.
Keywords:chicory  Cichorium intybus L    in vitro  stem elongation  flowering  gibberellins
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