The influences of age, extractive content and soil water on wood color in oak: the possible genetic determination of wood color

Klumpers, Johannes; Janin, G.; Becker, Michel; Levy, Gérard

doi:10.1051/forest:19930746

Cited by 42 publications

(37 citation statements)

References 2 publications

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“…In fact, the main part of the latewood contributing to wood colour is the terminal parenchyma (one cell layer in birch), which contains darkening compounds (McMillen 1975. Higher growth rate also results in trees growing on fertile sites reaching the size of logs younger than trees growing on poor sites, which may be beneficial as such for light colour of wood (Klumpers et al 1993). The result of Klumpers et al is in accordance with the results of this study, that the younger wood of planted birches was lighter.…”

Section: Discussionsupporting

confidence: 90%

Effect of felling season, storage and drying on colour of silver birch (Betula pendula) wood from four different growing sites

Luostarinen¹,

Möttönen²

2009

Silva Fenn.

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Darkening of birch wood during artificial drying is a significant problem regarding the use of its timber as raw material by the mechanical wood industry. In the future, an increasing proportion of birch timber will be obtained from plantation forests, which differ from natural forests in many respects. In this investigation sample boards of Betula pendula, both from naturally regenerated stands and plantations, were sawn into the dimensions used as raw material for parquet billets. Growing site, felling season, and storage of logs were taken into account as possible factors affecting wood colour changes during drying. The wood of birches from fertile plantations remained lighter-coloured during conventional drying than the wood of naturally regenerated birches from low-and medium-fertile stands. The reason may be the difference in tree age and growth rate between natural and planted stands. Thus, it could be beneficial to grow birch in fertile stands so that the trees reach log size as young as possible. The results of this study emphasise the good quality of the birch wood from planted stands compared to natural stands with regard to its colour.

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Section: Discussionsupporting

confidence: 90%

Effect of felling season, storage and drying on colour of silver birch (Betula pendula) wood from four different growing sites

Luostarinen¹,

Möttönen²

2009

Silva Fenn.

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“…Also, they determined that slowly grown mature trees from native sites had higher a * and b * values, compared with young rapidly grown plantation trees. Klumpers et al (1993) found that the heartwood became increasingly redder (a * ) with age in Quercus robur. On the other hand, growth rate was negatively correlated with a * but not with L * or b * in Calycophyllum spruceanum growing the Peruvian Amazon (Sotela et al, 2008).…”

Section: Wood Colour Variation With Plantation Characteristicsmentioning

confidence: 99%

Wood colour variation in sapwood and heartwood of young trees of Tectona grandis and its relationship with plantation characteristics, site, and decay resistance

Moya

Berrocal

2010

Ann. For. Sci.

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To cite this version:Róger Moya, Alexander Berrocal. Wood colour variation in sapwood and heartwood of young trees of Tectona grandis and its relationship with plantation characteristics, site, and decay resistance. Annals of Forest Science, Springer Verlag/EDP Sciences, 2010, 67 (1), <10.1051/forest/2009088>. Ann. For. Sci. 67 (2010) • With the purpose of understanding the colour variation, different fast-growth plantations were sampled with different growth rates, tree ages, and sites.• Wood colour was measured with a CIELab system, where three variables are estimated: coordinate L * for lightness, coordinate a * defines redness and coordinate b * defines yellowness.• Results showed only a negative correlation between L * and a * . L * and a * were negatively and positively respectively correlated with pith distance in heartwood, but not for b * . No correlations were found between L * and b * in sapwood and plantation characteristics, while a * was positively correlated with age and height of tree and growth rate. In heartwood, tree age and diameter at breast height were correlated with all colour parameters, but tree height and plantation density were correlated with a * and b * . Cluster site had correlation with L * . Multiple correlation analysis showed that the heartwood is increasing darker (L * ) and redder (a * ) when the trees are older and bigger. Correlation coefficient shown that sapwood and heartwood with lighter colour (L * ) is less resistance to fungal attack, but redness colour (a * ) increasing decay resistance. Mots-clés :CIELab / bois tropicaux / Tectona grandis / aubier / bois de coeur / plantations Résumé -Les variations de couleur dans l'aubier et le duramen de jeunes arbres de Tectona grandis, en relation avec les caractéristiques des plantations, du site et de la durabilité.• Il y a une grande variabilité de la couleur du bois de Tectona grandis produit à partir de plantations à croissance rapide et les causes de ces variations sont relativement inconnues.• Pour comprendre l'origine des variations de couleur nous avons échantillonné dans des plantations à croissance rapide qui diffèrent entre elles en termes de vitesse de croissance, d'âge et de site.• La couleur du bois a été mesurée avec le système CIELab qui permet la mesure de trois variables colorimétriques : la luminance L * allant du noir au blanc, a * et b * allant respectivement du vert au rouge et du bleu au jaune.• Les résultats montrent une corrélation négative entre L * et a * . Dans le bois le coeur il y a une corrélation négative entre L * et la distance à la moelle et une corrélation positive entre a * et la distance à la moelle : aucune corrélation n'apparaît pour b * .

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“…When the heartwood colour is slightly red, polyphenolic compounds are mostly responsible for determining this trait. The quantity and quality of extractives varies at inter-and intra-tree levels (Klumpers and Janin, 1992;Klumpers et al, 1993). The relations observed in some trees between colorimetric parameters and the radial position was due to the wood age.…”

Section: Colour Measurementsmentioning

confidence: 99%

Colour and decay resistance and its relationships in Eperua grandiflora

Amusant

Fournier²,

Beauchêne

2008

Ann. For. Sci.

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Abstract• Eperua grandiflora, which is widely distributed in the French Guiana forest region, shows high variability in decay resistance. Further information concerning this wood quality parameter is necessary, but standard testing methods are complex and time-consuming. We assessed the use of colorimetry to determine durability in heartwood samples from a range of trees.• Eperua grandiflora colour parameters were measured using a CIELAB system, revealing that the tree effect was greater than the radial position and height effects.• The wood samples were exposed to Coriolus versicolor and Antrodia sp. according to two European standards (En 350-1 and XP CEN TS 15083-1). Eperua grandiflora is more susceptible to brown rot. These two standards did not give the same durability classes. The high variation in natural durability was due to the tree effect.• These two properties were found to be correlated and the assessment also distinguished the extreme durability classes but they are not sufficient to classify the class of durability of this species. Mots-clés :durabilité naturelle / couleur / résistance à la pourriture / duramen / bois tropicaux Résumé -Étude de la variabilité de la couleur, de la durabilité naturelle et recherche de corré-lations chez Eperua grandiflora.• Eperua grandiflora, essence largement répandue dans les forêts de Guyane soufre d'un défaut majeur : une grande variabilité de sa durabilité naturelle à l'égard des champignons lignivores. Dans un premier temps, nous avons étudié la variabilité de la mesure de la couleur selon le système CIElab afin de vérifier si la colorimétrie peut être utilisée comme un indicateur de la durabilité naturelle.• Nous avons étudié la résistance de cette essence à l'échelle inter, et intra-arbres à l'égard de Coriolus versicolor et Antrodia sp., conformément aux normes européennes en vigueur : EN 350-1 et XP TS 15083-1. Les résultats ont révélé qu'Eperua grandiflora est plus sensible au champignon de pourriture brune.• De même, l'utilisation des normes a montré que l'on n'obtenait pas les mêmes classes de durabilité. La variabilité de la durabilité et de la couleur est plus importante à l'échelle inter-arbres qu'à l'échelle intra-arbre.• Enfin, ces deux propriétés sont corrélées mais nous ne pouvons envisager d'utiliser la colorimé-trie comme indicateur de la durabilité naturelle, car elle ne permet de différencier que les classes extrêmes.

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The influences of age, extractive content and soil water on wood color in oak: the possible genetic determination of wood color

Cited by 42 publications

References 2 publications

Effect of felling season, storage and drying on colour of silver birch (Betula pendula) wood from four different growing sites

Effect of felling season, storage and drying on colour of silver birch (Betula pendula) wood from four different growing sites

Wood colour variation in sapwood and heartwood of young trees of Tectona grandis and its relationship with plantation characteristics, site, and decay resistance

Colour and decay resistance and its relationships in Eperua grandiflora

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