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How young trees cope with the removal of whole or part of shoots: an analysis of local and distant responses to pruning in 1-year-old apple (Malus × domestica; Rosaceae) trees

Damien Fumey 1, 2 Pierre-Eric Lauri 2, 3 Yann Guédon 1, 2 Christophe Godin 1 Evelyne Costes 2
1 VIRTUAL PLANTS - Modeling plant morphogenesis at different scales, from genes to phenotype
CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique, UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
3 AFEF - Architecture et Fonctionnement des Espèces Fruitières [AGAP]
UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
Abstract : • Premise of study: Manipulation of tree architecture by pruning provides an experimental context to analyze architectural plasticity resulting from competition between developing organs. The objective of this study was to quantify the effects of the removal of all or part of shoots through pruning on the redistribution of growth and flowering at spatial and temporal levels. • Methods: Two types of pruning cuts were applied: (1) heading cuts of either the main stem or laterals and (2) thinning cuts (i.e., complete removal) of laterals. These two types of cuts were applied in summer and winter on 1-yr-old cultivars of Fuji and Braeburn apple trees. Tree topology and geometry were described over 3 years, and responses were analyzed for both local and distant scales. • Results: Heading cuts induced quasi-deterministic local responses on pruned axes, whereas responses to thinning cuts were more variable. For the main stem and laterals, responses over greater spatial and temporal scales were highlighted with (1) stronger growth the year after summer pruning and (2) modification of branching and flowering along the unpruned parts after winter pruning. • Conclusions: Pruning typically induced growth redistribution toward traumatic reiterations and enhanced growth of the remaining unpruned axes with a concomitant decrease of flowering and cambial growth. Although results could be interpreted in relation to the root–shoot balance, tree responses appeared highly cultivar-specific
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https://hal.inria.fr/hal-00859704
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Submitted on : Monday, September 9, 2013 - 12:40:58 PM
Last modification on : Tuesday, August 25, 2020 - 6:28:04 PM

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Damien Fumey, Pierre-Eric Lauri, Yann Guédon, Christophe Godin, Evelyne Costes. How young trees cope with the removal of whole or part of shoots: an analysis of local and distant responses to pruning in 1-year-old apple (Malus × domestica; Rosaceae) trees. American Journal of Botany, Botanical Society of America, 2011, 98 (11), pp.1737--1751. ⟨10.3732/ajb.1000231⟩. ⟨hal-00859704⟩

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