OrangerV1, France, Analysis, bibRecord, 000219

Basipetal Gradient of Axillary Bud Inhibition Along a Rose ( Rosa hybrida L.) Stem: Growth Potential of Primary Buds and their Two Most Basal Secondary Buds as Affected by Position and Age

Identifieur interne : 000219 ( France/Analysis ); précédent : 000218; suivant : 000220

Basipetal Gradient of Axillary Bud Inhibition Along a Rose ( Rosa hybrida L.) Stem: Growth Potential of Primary Buds and their Two Most Basal Secondary Buds as Affected by Position and Age

Auteurs : M. Le Bris [France] ; A. Champeroux [France] ; P. Bearez [France] ; M. T Le Page-Degivry [France]

Source :

Annals of Botany [ 0305-7364 ] ; 1998.

RBID : ISTEX:C81E576FC1A2BE09DBCAC8C17D986F275D0285A5

English descriptors

KwdEn :
- Axillary bud, Axillary bud; basal shoot; cutting; development; endodormancy; growth; paradormancy; position; primary shoot;Rosa hybridaL.; rose; secondary bud; topophysis., Rosa hybridaL., basal shoot, cutting, development, endodormancy, growth, paradormancy, position, primary shoot, rose, secondary bud, topophysis..

Abstract

InRosa hybridaL. cv. Ruidriko ‘Vivaldi’®, the effect of position on growth and development potentials of axillary buds was investigated by single internode cuttings excised along the floral stem and its bearing shoot. The experiments were carried out in both glasshouses and in a phytotron. The study firstly concerned the development of the primary shoot from the onset of bud growth until anthesis. The primary shoot was then bent horizontally to promote the growth of the two most proximal secondary buds, the collateral buds, already differentiated inside the primary bud. They gave rise to basal shoots. In the basipetal direction, the axillary buds along the floral stem exhibited both an increase in the lag time before bud growth and a decrease in bud growth percentage, demonstrating the existence of a physiological basipetal gradient of inhibition intrinsic to the buds or due to short range correlations. The same basipetal gradient of inhibition was observed along the floral stem and its bearing shoot, demonstrating that the age of the bud was not a major factor in determining the rate of bud growth. After bending the primary shoot, the percentage of collateral bud growth was also affected by the cutting position. The more proximal the cutting, the lower the sprouting ability of collateral buds. The growth potential of these buds appeared to be already determined inside the main bud before cutting excision.

Url:

DOI: 10.1006/anbo.1997.0558

Affiliations:

Links to Exploration step

ISTEX:C81E576FC1A2BE09DBCAC8C17D986F275D0285A5

Le document en format XML

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<term>Rosa hybridaL.</term>
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<front><div type="abstract" xml:lang="en">InRosa hybridaL. cv. Ruidriko ‘Vivaldi’®, the effect of position on growth and development potentials of axillary buds was investigated by single internode cuttings excised along the floral stem and its bearing shoot. The experiments were carried out in both glasshouses and in a phytotron. The study firstly concerned the development of the primary shoot from the onset of bud growth until anthesis. The primary shoot was then bent horizontally to promote the growth of the two most proximal secondary buds, the collateral buds, already differentiated inside the primary bud. They gave rise to basal shoots. In the basipetal direction, the axillary buds along the floral stem exhibited both an increase in the lag time before bud growth and a decrease in bud growth percentage, demonstrating the existence of a physiological basipetal gradient of inhibition intrinsic to the buds or due to short range correlations. The same basipetal gradient of inhibition was observed along the floral stem and its bearing shoot, demonstrating that the age of the bud was not a major factor in determining the rate of bud growth. After bending the primary shoot, the percentage of collateral bud growth was also affected by the cutting position. The more proximal the cutting, the lower the sprouting ability of collateral buds. The growth potential of these buds appeared to be already determined inside the main bud before cutting excision.</div>
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Basipetal Gradient of Axillary Bud Inhibition Along a Rose ( Rosa hybrida L.) Stem: Growth Potential of Primary Buds and their Two Most Basal Secondary Buds as Affected by Position and Age

Basipetal Gradient of Axillary Bud Inhibition Along a Rose ( Rosa hybrida L.) Stem: Growth Potential of Primary Buds and their Two Most Basal Secondary Buds as Affected by Position and Age

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Abstract

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