Summary
In the qualitative short-day plant Impatiens balsamina, gibberellic acid (GA3) not only promoted the formation of floral buds in response to suboptimal photoinductive conditions and reduced the number of SD cycles that are required for their development into flowers, but also caused initiation of floral buds under non-inductive photoperiods. In plants treated with repeated applications of GA3, the floral buds developed into flowers irrespective of whether the apex was left intact or was removed. In those that received a single application of GA3 the floral buds developed into flowers only in decapitated plants.
References
Barbat, I., and C. Ochesanu: The action of gibberellin A3 on Chrysanthemum morifolium in non-inductive photoperiodic conditions. Naturwissenschaften 51, 316–317 (1964).
Greulach, V. A., and J. G. Haesloop: Influence of gibberellin on Xanthium flowering as related to number of photoinductive cycles. Science 127, 646–647 (1958).
Harder, R., and R. Bünsow: Einfluß des Gibberellins auf die Blütenbildung bei Kalanchoe blossfeldiana. Naturwissenschaften 43, 544 (1956).
Lange, A.: Physiology of flower initiation. In: Encyclopedia of Plant Physiology (W. Ruhland, ed.), vol. 15, pt. 1, p. 1380–1536. Berlin-Heidelberg-New York: Springer 1965.
Nanda, K. K., and H. N. Krihnamoorthy: Photoperiodic studies on growth and development of Impatiens balsamina L. II. Floral bud initiation, flower opening and extension growth. Planta (Berl.) 72, 338–343 (1967).
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Nanda, K.K., Krishnamoorthy, H.N. & Anuradha, T.A. Floral induction by gibberellic acid in Impatiens balsamina, a qualitative short-day plant. Planta 76, 367–370 (1967). https://doi.org/10.1007/BF00387542
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DOI: https://doi.org/10.1007/BF00387542