The Effect of Gibberellic Acid and Guanosine Monophosphates on Extension Growth, Leaf Production and Flowering of Impatiens balsamina |
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| Authors: | REETA SHARMA SURINDER KUMAR K K NANDA |
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| Institution: | Department of Biology, Miyagi College of Education, Aoba-Yama, Sendai 980, Japan |
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| Abstract: | Gibberellic acid (GA3) increases the height of Impatiens balsamina under both 8- and 24-h photoperiods. The height also increases with all guanosine monophosphates (GMPs) under 8-h photoperiods but only with 5′-GMP under 24-h photoperiods. GA3 as well as GMPs increase the number of leaves under 8-h but not under 24-h photoperiods. GA3 as well as GMPs induce floral buds under strictly non-inductive photoperiods and increase the number of floral buds under 8-h photoperiods. The floral bud initiation occurs earlier when cGMP is used in combination with 100 mg/l GA3. |
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