Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 410881
Title Hormonal control of the outgrowth of axillary buds in Alstroemeria cultured in vitro
Author(s) Pumisutapon, P.; Visser, R.G.F.; Klerk, G.J.M. de
Source Biologia Plantarum 55 (2011)4. - ISSN 0006-3134 - p. 664 - 668.
DOI http://dx.doi.org/10.1007/s10535-011-0165-9
Department(s) Laboratory of Plant Breeding
WUR Plant Breeding
EPS-4
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) apical dominance - growth - auxin - inhibition - substances - rhizome
Abstract We study apical dominance in Alstroemeria, a plant with an architecture very different from the model species used in research on apical dominance. The standard explant was a rhizome with a tip and two vertically growing shoots from which the larger part had been excised leaving ca. 1 cm stem. The axillary buds that resumed growth were located at this 1-cm stem just above the rhizome. They were released by removal of the rhizome tip and the shoot tips. Replacement of excised tips by lanolin with indole-3-butyric acid (IBA) restored apical dominance. The auxin transport inhibitors 2,3,5-triiodobenzoic acid (TIBA) and N-1-napthylphthalamic acid (NPA) reduced apical dominance. 6-Benzylaminopurine (BAP) enhanced axillary bud outgrowth but the highest concentrations (> 9 µM) caused fasciation. Thidiazuron (TDZ) did not show improvement relative to BAP. Even though the architecture of Alstroemeria and the model species are very different, their hormonal mechanisms in apical dominance are for the greater part very similar.
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