Flower development and effects of a cold treatment and a supplemental gibberellic acid application on flowering of Helleborus niger and Helleborus x ericsmithii

A. Christiaens; Emmy Dhooghe; D. Pinxteren; M. C. Van Labeke

doi:10.1016/j.scienta.2012.01.017

Flower development and effects of a cold treatment and a supplemental gibberellic acid application on flowering of Helleborus niger and Helleborus x ericsmithii

A. Christiaens, Emmy Dhooghe, D. Pinxteren, M. C. Van Labeke

Onderzoeksoutput: Bijdrage aan tijdschrift › A1: Web of Science-artikel › peer review

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The increased horticultural interest in Helleborus requires the development of techniques for flowering control. Therefore, we have determined flower initiation and differentiation under natural conditions for Helleborus niger L and the hybrid Helleborus x ericsmithii B. Mathew. Once flower primordia were present in the underground buds of the plants, the effect of a cold treatment (336, 504 or 672 chilling units (CU)) and a supplemental gibberellic acid (GA(3)) application (500 mg L-1) on pre-cooled plants was examined. The cold treatment resulted in a progressive decrease of the time to flower. Moreover, when pre-cooled plants received a supplemental GA(3) application early flowering was further enhanced and these plants had a higher number of flowers with longer flower stems and larger flowers. (c) 2012 Elsevier B.V. All rights reserved.

Oorspronkelijke taal	Engels
Tijdschrift	Scientia Horticulturae
Volume	136
Pagina's (van-tot)	145-151
Aantal pagina’s	7
ISSN	0304-4238
DOI's	https://doi.org/10.1016/j.scienta.2012.01.017
Publicatiestatus	Gepubliceerd - 1-mrt.-2012

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10.1016/j.scienta.2012.01.017

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title = "Flower development and effects of a cold treatment and a supplemental gibberellic acid application on flowering of Helleborus niger and Helleborus x ericsmithii",

abstract = "The increased horticultural interest in Helleborus requires the development of techniques for flowering control. Therefore, we have determined flower initiation and differentiation under natural conditions for Helleborus niger L and the hybrid Helleborus x ericsmithii B. Mathew. Once flower primordia were present in the underground buds of the plants, the effect of a cold treatment (336, 504 or 672 chilling units (CU)) and a supplemental gibberellic acid (GA(3)) application (500 mg L-1) on pre-cooled plants was examined. The cold treatment resulted in a progressive decrease of the time to flower. Moreover, when pre-cooled plants received a supplemental GA(3) application early flowering was further enhanced and these plants had a higher number of flowers with longer flower stems and larger flowers. (c) 2012 Elsevier B.V. All rights reserved.",

author = "A. Christiaens and Emmy Dhooghe and D. Pinxteren and {Van Labeke}, {M. C.}",

year = "2012",

month = mar,

day = "1",

doi = "10.1016/j.scienta.2012.01.017",

language = "English",

volume = "136",

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journal = "Scientia Horticulturae",

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TY - JOUR

T1 - Flower development and effects of a cold treatment and a supplemental gibberellic acid application on flowering of Helleborus niger and Helleborus x ericsmithii

AU - Christiaens, A.

AU - Dhooghe, Emmy

AU - Pinxteren, D.

AU - Van Labeke, M. C.

PY - 2012/3/1

Y1 - 2012/3/1

N2 - The increased horticultural interest in Helleborus requires the development of techniques for flowering control. Therefore, we have determined flower initiation and differentiation under natural conditions for Helleborus niger L and the hybrid Helleborus x ericsmithii B. Mathew. Once flower primordia were present in the underground buds of the plants, the effect of a cold treatment (336, 504 or 672 chilling units (CU)) and a supplemental gibberellic acid (GA(3)) application (500 mg L-1) on pre-cooled plants was examined. The cold treatment resulted in a progressive decrease of the time to flower. Moreover, when pre-cooled plants received a supplemental GA(3) application early flowering was further enhanced and these plants had a higher number of flowers with longer flower stems and larger flowers. (c) 2012 Elsevier B.V. All rights reserved.

AB - The increased horticultural interest in Helleborus requires the development of techniques for flowering control. Therefore, we have determined flower initiation and differentiation under natural conditions for Helleborus niger L and the hybrid Helleborus x ericsmithii B. Mathew. Once flower primordia were present in the underground buds of the plants, the effect of a cold treatment (336, 504 or 672 chilling units (CU)) and a supplemental gibberellic acid (GA(3)) application (500 mg L-1) on pre-cooled plants was examined. The cold treatment resulted in a progressive decrease of the time to flower. Moreover, when pre-cooled plants received a supplemental GA(3) application early flowering was further enhanced and these plants had a higher number of flowers with longer flower stems and larger flowers. (c) 2012 Elsevier B.V. All rights reserved.

U2 - 10.1016/j.scienta.2012.01.017

DO - 10.1016/j.scienta.2012.01.017

M3 - A1: Web of Science-article

SN - 0304-4238

VL - 136

SP - 145

EP - 151

JO - Scientia Horticulturae

JF - Scientia Horticulturae

ER -

Flower development and effects of a cold treatment and a supplemental gibberellic acid application on flowering of Helleborus niger and Helleborus x ericsmithii

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