Flower Induction in Japanese Chrysanthemums with Gibberellic Acid.
Gibberellic acid, when applied in lanolin to apices of three Japanese varieties of Chrysanthemum morifolium, induced bolting and flowering. These varieties are not sensitive to photoperiod but require a cold treatment in order to flower. On the other hand, the varieties of Chrysanthemum which belong to the short-day group are not induced to flower by gibberellic acid.
Harada
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