Effect of Day-length and Gibberellic Acid on the Flowering of Arabidopsis

Abstract

It has recently been discovered¹ that a mixture of gibberellin A and gibberellic acid greatly accelerates the initiation of flowers in unvernalized Hyoscyamus niger L., a vernalizable long-day biennial plant. Even more recently, it has been found² that this mixture of compounds will cause flower formation under short-day conditions in Bryophyllum crenatum Baker, a plant which requires long-day for internode elongation, short day for floral initiation, and long-day again for the development of functional flowers³.