Free access
Issue
Ann. For. Sci.
Volume 62, Number 8, December 2005
Page(s) 837 - 841
DOI http://dx.doi.org/10.1051/forest:2005090
Published online 15 December 2005
Ann. For. Sci. 62 (2005) 837-841
DOI: 10.1051/forest:2005090

Comparison between field performance of cuttings and seedlings of Eucalyptus globulus

Maria João Gaspara, Nuno Borralhob and António Lopes Gomesa

a  Centro de Gestão de Ecossistemas/UTAD, Univ. Trás-os-Montes e Alto Douro, Dep. Florestal, 5000-911 Vila Real, Portugal
b  RAIZ, Instituto de Investigação da Floresta e Papel, Apartado 15, 3801-501 Eixo, Portugal

(Received 17 November 2003; accepted 28 June 2005; published online 15 December 2005)

Abstract - The use of vegetative propagules of Eucalyptus globulus has been an important tool for the large scale deployment of improved plants. However, given the reported morphological differences in root systems between cuttings and seedlings, the question of whether such differences affect growth and wood quality needs to be addressed. The present study compares growth (diameter and height) and wood density (pilodyn penetration) of vegetatively propagated cuttings and seedlings from the same or related pedigrees. The relevance of age, site and the interaction between propagation method and genetic improvement were also investigated. Trials included full-sib families, in which each family was tested as cuttings and seedlings, and progeny trials where parents were cloned and offspring derived from open pollinated crosses. The results show that there were no significant differences between the two types of plant material (cuttings versus seedlings) for the traits examined in the study.


Résumé - Comparaison des performances en forêt de plants issus de semis et de bouturage d'Eucalyptus globulus. Le recours à la multiplication végétative est un outil de première importance pour le déploiement des variétés améliorées d'Eucalyptus globulus. Cependant, l'existence de caractéristiques morphologiques distinctes entre plants issus de semis et plants issus de boutures laisse planer des doutes sur leurs effets sur la croissance et la qualité du bois. Dans cette étude, nous avons comparé la croissance et la densité du bois (via le pilodyn) d'arbres de même pedigree ou apparentés, produits par bouturage et par semis. Nous avons également considéré l'effet de l'âge des plants, du milieu d'expérimentation et les interactions entre méthodes de multiplication et génotypes. Les essais analysés comprennent des tests de descendances pleins-frères, multipliés par semis et par bouturage, et des tests de descendances comprenant les parents clonés et leurs descendances issues de pollinisation libre. Les résultats montrent l'absence de différence significative entre les deux types de matériel (semis et boutures) que ce soit pour la croissance ou pour la densité du bois.


Key words: seedling / cutting / growth / wood density / Eucalyptus globulus

Mots clés : bouture / semis / croissance / densité du bois / Eucalyptus globulus

Corresponding author: Maria João Gaspar mjgaspar@utad.pt

© INRA, EDP Sciences 2005

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