SONG, Jialin; BRENDEL, Oliver; BODENES-BREZARD, Catherine; PLOMION, Christophe; KREMER, Antoine; COLIN, Francis

doi:10.1007/s11295-016-1083-y

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

http://creativecommons.org/licenses/by-sa/

SONG, Jialin
Laboratoire d'Etudes des Ressources Forêt-Bois [LERFoB]

BRENDEL, Oliver
Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF]

BODENES-BREZARD, Catherine
Biodiversité, Gènes & Communautés [BioGeCo]

Langue

Article de revue

Ce document a été publié dans

Tree Genetics and Genomes. 2017, vol. 13, n° 5, p. 1-15

Springer Verlag

Résumé en anglais

A new method for obtaining internal views of tree trunks was recently developed using X-ray computed tomography (CT). This technology makes it possible to observe and measure rameal traces that are left by latent buds, sequential branches, and epicormic branches in the wood. Epicormic branches are undesirable for producing high-value solid wood, especially in Quercus robur, an important hardwood forest tree species in Europe, which is prone to epicormic branches that develop from abundant latent buds. For the very first time, branching-related traits deduced from X-ray CT observation make it possible to analyze the genetic architecture of oak branching through a quantitative trait locus (QTL) analysis. Highly significant QTLs were detected for traits related to latent buds and epicormic branches. The number and effect of these QTLs suggest a moderate genetic determinism for the formation of latent buds and the development of epicormic branches. Three hotspots were found, grouping QTLs for different branching traits. An analysis of the common physiological denominators of these coincident traits suggests that their genetic controls are related to either the regulation of the axillary meristem initiation or to bud dormancy. Conversely, the position of only the separate QTL related to the number of sequential branches suggests an independent genetic control.< Réduire

Mots clés

tomodensitométrie

quercus robur

bourgeon latent

qtl

Mots clés en anglais

pedunculate oak

computed tomography

epicormic

latent bud

DOI

http://dx.doi.org/10.1007/s11295-016-1083-y

Project ANR

Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers - ANR-11-LABX-0002

Origine

Importé de hal

Unités de recherche

BioGeCo (Biodiversité Gènes & Communautés) - UMR 1202