Induction of flowering ofImpatiens balsamina treated with gibberellic acid and resorcinol |
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Authors: | Kamlesh Kanwar K K Nanda |
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Institution: | (1) Department of Botany, Punjab University, 160014 Chandigarh, India;(2) Present address: Sugar cane Research Station, Punjab Agricultural University, 144001 Jalandhar, India |
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Abstract: | Under strictly non-inductive photoperiods (24-h photoperiods) floral buds were initiated on plants receiving 25 treatments
with Reso (resorcinol) or 8 treatments with GA3 (gibberellic acid) or GA3 + Reso, while water treated control plants did not flower at all. Although a single treatment of plants with GA3 or GA3 + Reso is not adequate to cause induction under LD conditions, its effect is added to the sub-threshold induction caused
by one SD (short day: 8-h photoperiod) cycle. The initiation of floral buds was hastened with an increasing number of SD cycles
accompanying respective number of treatments, the effect of GA3 alone or together with Reso being more pronounced than that of Reso alone. GA3 increased the number of floral buds more than Reso, the number being the highest in plants receiving the respective number
of treatments with the combination GA3 + Reso under both inductive as well as non-inductive photoperiods.
Deceased. |
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Keywords: | Growth regulators photoperiodic induction |
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