Inhibitory effect of abscisic acid on shoot growth and flowering induced by gibberellic acid in nonprecooled derooted bulbs of tulip (Tulipa gesneriana L.)
1999
Saniewski, M. (Research Inst. of Pomology and Floriculture, Skierniewice (Poland)) | Kawa-Miszczak, L. | Wegrzynowicz-Lesiak, E. | Okubo, H.
Effect of gibberellic acid (GA3) at a concentration of 200 mgl(-1), abscisic acid (ABA) at a concentration of 20 mgl(-1) and their mixture on shoot growth and flowering in nonprecooled derooted tulip bulbs cv. apeldoorn was investigated. As it was found previously GA3 induced shoot growth and flowering in nonprecooled derooted bulbs of tulip. The present studies showed that the simultaneous application of GA3 with ABA totally inhibited shoot growth and flowering induced by the gibberellin in nonprecooled derooted tulip bulbs. These results suggest that hormonal balance, gibberellins-abscisic acid, is the important factor in control of dormancy and dormancy release of tulip bulbs, causing shoot growth and flowering
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