A study of the cambial zone and conductive phloem of common beech (Fagus sylvatica L.) using an image analysis method. I. Influence of tree age on the structure

Détails

ID Serval
serval:BIB_2DC9F76398F5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
A study of the cambial zone and conductive phloem of common beech (Fagus sylvatica L.) using an image analysis method. I. Influence of tree age on the structure
Périodique
Trees
Auteur⸱e⸱s
Vollenweider P., Dustin I., Hofer R. M., Vittoz P., Hainard P.
ISSN
0931-1890
Statut éditorial
Publié
Date de publication
1994
Volume
9
Numéro
2
Pages
106-112
Langue
anglais
Résumé
Quantification is a major problem when using histology to study the influence of ecological factors on tree structure. This paper presents a method to prepare and to analyse transverse sections of cambial zone and of conductive phloem in bark samples. The following paper (II) presents the automated measurement procedure. Part I here describes and discusses the preparation method, and the influence of tree age on the observed structure. Highly contrasted images of samples extracted at breast height during dormancy were analysed with an automatic image analyser. Between three young (38 years) and three old (147 years) trees, age-related differences were identified by size and shape parameters, at both cell and tissue levels. In the cambial zone, older trees had larger and more rectangular fusiform initials. In the phloem, sieve tubes were also larger, but their shape did not change and the area for sap conduction was similar in both categories. Nevertheless, alterations were limited, and demanded statistical analysis to be identified and ascertained. The physiological implications of the structural changes are discussed.
Mots-clé
Image analysis, Bark structure, Senescence, Fagus sylvatica
Web of science
Création de la notice
20/01/2008 15:33
Dernière modification de la notice
20/08/2019 13:12
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