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Genetic variability of growth and wood chemical properties in a clonal population of Eucalyptus urophylla x Eucalyptus grandis in the Congo

Makouanzi Chrissy Garel, Chaix Gilles, Nourissier Sophie, Vigneron Philippe. 2018. Genetic variability of growth and wood chemical properties in a clonal population of Eucalyptus urophylla x Eucalyptus grandis in the Congo. Southern Forests, 80 (2) : pp. 151-158.

Journal article ; Article de revue à facteur d'impact
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Genetic variability of growth and wood chemical properties in a clonal population of Eucalyptus urophylla Eucalyptus grandis in the Congo.pdf

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P.Vigneron-ID584283.pdf

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Quartile : Q3, Sujet : FORESTRY

Abstract : Thirty-four Eucalyptus urophylla x Eucalyptus grandis hybrids were evaluated with a view to selecting for improved growth and wood-quality traits for plantations in the Congo. Height, circumference at breast height and volume were measured at 12, 27, 37, 49 and 60 months. Lignin content, the syringyl/guaiacyl ratio and total extractives content were predicted by near-infrared spectroscopy using wood powder samples collected from trees at breast height. While wood chemical properties were stable and under strong genetic control, growth traits were not. The genetic correlation between lignin content and growth was weak and negative, whereas the environmental correlation was also weak but positive. The genetic improvement of E. urophylla x E. grandis clones, based on growth features, leads to a limited decrease in lignin content and syringyl content and to a limited increase in extractives content. (Résumé d'auteur)

Mots-clés Agrovoc : Eucalyptus grandis, Eucalyptus urophylla, Hybride, Propriété technologique, Bois, Croissance, Propriété physicochimique, Propriété mécanique, Lignine, Intéraction génotype environnement, Extrait de bois, Extrait, Composition chimique

Mots-clés géographiques Agrovoc : République démocratique du Congo

Mots-clés complémentaires : Syringyl

Classification Agris : K50 - Processing of forest products
K10 - Forestry production
F30 - Plant genetics and breeding
F62 - Plant physiology - Growth and development
F60 - Plant physiology and biochemistry

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

  • Makouanzi Chrissy Garel, CIRAD-BIOS-UMR AGAP (FRA) - auteur correspondant
  • Chaix Gilles, CIRAD-BIOS-UMR AGAP (BRA) ORCID: 0000-0003-2015-0551
  • Nourissier Sophie, CIRAD-BIOS-UMR AGAP (FRA)
  • Vigneron Philippe, CIRAD-BIOS-UMR AGAP (COG)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/584283/)

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