Indirect genetic selection of end-products wood properties: A method suitable for both tropical and temperate forest trees

Rozenberg, Philippe; Franc, Alain; Chantre, Guillaume; Baonza, Victoria

doi:10.1080/20702620.2001.10434122

Cited by 2 publications

(7 citation statements)

References 2 publications

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“…Diametral X-ray microdensity profiles (MDM) were recorded on each disk according to the procedure described by Rozenberg et al [18]. Density parameters are computed from these density profiles.…”

Section: Ray Micro-densitometry (Mdm) Anatomy and Ultrastructurementioning

confidence: 99%

“…Classical within ring density traits may be significantly correlated with TMP fibre traits, but alternative MDM profile analysis [18] allows better calibrations to be found between MDM parameters and complex traits like pulping ones. In particular, MDM parameters based on a moving density threshold separating the profile in 2 parts (high density profile and low density profile) can be calculated at the profile level.…”

Section: Identification Of Non Destructive Predictors Of the Papermakmentioning

confidence: 99%

“…The relevance of the NB700 parameter is corroborated by the TMP analysis of the 15 clones, especially when it is combined with the average wood density (see Section 4.1). Douglas fir Kraft fibre morphology can be also estimated directly from the MDM profile, as described by Rozenberg et al [18], with respectively the following coefficients of correlation for average fibre width, fibre coarseness and curl index: +0.88, +0.92, +0.82.…”

Section: Identification Of Non Destructive Predictors Of the Papermakmentioning

confidence: 99%

“…(2) Simultaneously increasing the average wood density and/or the square density profile [18], with trade-off regarding the within ring density heterogeneity, because of unfavourable genetic correlations [21]. For Douglas fir wood, wood density is a simple relevant wood property, able to predict wood stiffness and compression of sawn boards and ply-woods.…”

Section: Towards Suggestions For Breedersmentioning

confidence: 99%

“…The genetic variability of the within ring heterogeneity of density of Douglas fir has been already studied [9,12] by Keller and Nepveu who suggested selection of families within the best provenances by evaluating a high potential gain on this parameter: the within ring heterogeneity of density varies from 15% to 28% between progenies of 10 provenances. From recent experience, it is also obvious the within ring density components of conifers is highly correlated with mechanical properties of solid wood [18] as well as the fibre morphology, thus the papermaking potential [3,5,18].…”

Section: Introductionmentioning

confidence: 99%

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Genetic selection within Douglas fir (Pseudotsuga menziesii) in Europe for papermaking uses

Chantre¹,

Rozenberg²,

Baonza³

et al. 2002

Ann. For. Sci.

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-The study aims to identify the feasibility and the relevance of a genetic selection for enhancing the pulping potential of the Douglas fir wood. At first, wood predictors for TMP potential are identified through the refining of thirty trees 17-year-old, using a specific procedure on a 12" Andritz refiner. The variations of TMP physical properties are linked with those of anatomical parameters, but also with within ring density related traits. The brightness of the unbleached TMP is negatively correlated with the red chromatic component of wood. Lignin, holocellulose and extractives content on one hand, Kraft fibre morphology on the other hand are considered to evaluate roughly the wood potential for the Kraft process. Then 15 clones out of 200 are non destructively selected within a 24-year-old German test to evaluate the range of the genetic variation of the papermaking potential. Chemical analyses give evidence of large variations of the chemical composition ratio between clones (holocellulose/lignin ratio). The clone discrimination of the fibre length is weak, but significant differences of fibre coarseness are observed as a consequence of the large variability of the latewood density levels. The industrial selection gain for pulping is discussed on the basis of TMP pilot plant tests which show large differences of physical and optical TMP properties between average wood assortments of each clone. This leads to practical recommendations for breeders considering the expectations of both the pulping and the wood industry.wood quality / TMP / Kraft pulp / genetic selection / Pseudotsuga menziesii Résumé -Sélection génétique du Douglas (Pseudotsuga menziesii) en Europe pour des usages papetiers. L'étude vise à connaître la faisabilité et la pertinence d'une sélection génétique pour améliorer le potentiel papetier du bois de Douglas. Dans un premier temps sont identifiés des indicateurs de qualité du bois pour la pâte TMP au travers du défibrage de 30 arbres âgés de 17 ans sur un pilote Andritz 12". Les variations de propriétés physiques des pâtes TMP sont liées à celles de paramètres anatomiques, mais aussi à des variations de densité intra-cerne. La blancheur des pâtes écrues est négativement corrélée à la composante chromatique rouge du bois. Les taux de lignine, holocellulose et taux d'extraits d'une part, les caractéristiques morphologiques des fibres d'autre part, sont mesurés pour évaluer sommairement le potentiel du bois dans le procédé Kraft. Dans un second temps, 15 clones sont sélectionnés parmi 200 de façon non destructive au sein d'un test clonal allemand âgé de 24 ans, afin d'évaluer l'ampleur de la variation génétique du potentiel papetier. Les analyses chimiques mettent en évidence de forts contrastes entre clones du point de vue de la composition chimique (rapport holocellulose/lignine). La différenciation des clones est faible pour la longueur des fibres, à la différence de la masse linéique des fibres, conséquence d'une forte variation de la densité du bois d'été entre clones. Dans une...

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Section: Ray Micro-densitometry (Mdm) Anatomy and Ultrastructurementioning

confidence: 99%

Section: Identification Of Non Destructive Predictors Of the Papermakmentioning

confidence: 99%

Section: Identification Of Non Destructive Predictors Of the Papermakmentioning

confidence: 99%

Section: Towards Suggestions For Breedersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Genetic selection within Douglas fir (Pseudotsuga menziesii) in Europe for papermaking uses

Chantre¹,

Rozenberg²,

Baonza³

et al. 2002

Ann. For. Sci.

View full text Add to dashboard Cite

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A method for describing and modelling of within-ring wood density distribution in clones of three coniferous species

Ivković

Rozenberg²

2004

Ann. For. Sci.

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-Wood density within growth rings was examined and modelled for clones of three coniferous species: Norway spruce, Douglas fir, and maritime pine. Within-ring density measurements obtained by X-ray scanning were represented as a frequency distribution. The distribution was described using both moment-based and non-parametric (robust) statistics and its sample quantiles were modelled using the generalised lambda distribution. In Norway spruce the frequency distribution of wood density was unimodal and asymmetric (i.e. positively skewed), whereas in Douglas fir and maritime pine, the distribution was bimodal (i.e. mixture of two skewed distributions, corresponding to earlywood and latewood ring zones). In all three species, analyses of covariance revealed that, after adjustment for ring width or mean ring density, there was still significant (p < 0.01) clone variability in within-ring frequency distribution parameters (i.e. clones with similar growth rate or mean density had different within-ring structure).Norway spruce / Douglas-fir / maritime pine / wood density / modelling Résumé -Une méthode pour description et modélisation de la distribution de densité intra-cerne du bois parmi les clones de trois espèces de conifères. La densité du bois dans les cernes de croissance a été examinée et modélisée pour les clones de trois espèces de conifères : épicéa commun, sapin Douglas, et pin maritime. Les mesures de densité intra-cerne, obtenues par densitométrie aux rayons-X, ont été représentées sous forme de distribution de fréquence. La distribution a été décrite en utilisant des statistiques paramétriques (basés sur les moments) et non-paramétriques, et ses quantiles ont été modélisés en utilisant la distribution généralisée de lambda. Pour l'épicéa la distribution de fréquence de la densité du bois était uni-modale et asymétrique (coeff. d'asymétrie positif), tandis que dans le Douglas et le pin maritime, la distribution était bimodale (c-à-d mélange de deux distributions asymétriques, correspondant aux zones de cerne du bois initial et du bois final). Dans chacune des trois espèces, les analyses de covariance ont indiqué que, après ajustement pour la largeur de cerne ou la densité moyenne de cerne, il restait une variabilité significative entre clones (p < 0,01) des paramètres de distribution de fréquence intra-cerne (c-à-d des clones avec un taux de croissance ou une densité moyenne semblable, avaient une structure intra-cerne différente). épicéa / douglas / pin maritime / densité du bois / modélisation C ′

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Indirect genetic selection of end-products wood properties: A method suitable for both tropical and temperate forest trees

Cited by 2 publications

References 2 publications

Genetic selection within Douglas fir (Pseudotsuga menziesii) in Europe for papermaking uses

Genetic selection within Douglas fir (Pseudotsuga menziesii) in Europe for papermaking uses

A method for describing and modelling of within-ring wood density distribution in clones of three coniferous species

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