Effect of Auxins, Cytokinins, Gibberellins, Abscisic Acid and Ethephon on Regeneration and Growth of Bulblets on Excised Bulb Scale Segments of Hyacinth |
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| Authors: | R. L. M. PIERIK H. H. M. STEEGMANS |
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| Affiliation: | Department of Horticulture, Agricultural University, P.O. Box 30, Wageningen, the Netherlands |
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| Abstract: | The effect of various growth substances on regeneration and growth of bulblets on excised bulb scale segments of Hyacinthus orientalis L. cv. Pink Pearl was studied. Bulblet formation was promoted by the auxins IAA and IBA but was inhibited by NAA at high concentrations. IAA hardly affected bulblet weight, whereas IBA and NAA at high concentrations decreased it. Cytokinins had hardly any effect on bulblet regeneration and bulblet weight, Gibberellins inhibited both bulblet regeneration and bulblet weight; GA4+7 acted much stronger than GA3. ABA and ethephon decreased bulblet regeneration and bulblet growth. |
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