Genetic correlations between wood quality traits of Pinus pinaster Ait

Gaspar, Maria João; Lousada, J.; Aguiar, Alexandre; Almeida, Maria Helena

doi:10.1051/forest:2008054

Cited by 24 publications

(24 citation statements)

References 26 publications

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“…Abdel-Gadir et al (1993) also achieved moderate positive correlations of LWP to density-related components (r = 0.38 to 0.63). Gaspar et al (2008b) also found a moderately positive correlation between these traits, although the correlation was slightly higher for LWD (r=0.59) than for EWD (r=0.49).…”

Section: Wood Density and Growth Componentsmentioning

confidence: 91%

“…For Pinus pinaster, Louzada (2003) also noticed a more important dependency of RD on EWD (r=0.959-0.960) than on LWD (r=0.521-0.708) and a moderate correlation between earlywood and latewood densities (r=0.291-0.507). On the other hand, Gaspar et al (2008b), also for Pinus pinaster, found a higher correlation of RD to LWD (r=0.72) than to EWD (r= 0.67) and a weak but positive correlation between earlywood and latewood densities (r=0.19). Abdel-Gadir et al (1993) stated that for Pseudotsuga menziesii in the juvenile period, RD was positively, moderately, and equally correlated with EWD and LWD (r=0.56), but in mature wood, the correlation was slightly higher with LWD (r=0.72).…”

Section: Wood Density and Growth Componentsmentioning

confidence: 98%

“…For Picea abies, Steffenrem et al (2007) also found similar positive correlations between these traits at the individual tree level (r=0.50). For Pinus pinaster, Louzada (2003) and Gaspar et al (2008b) found a much higher correlation of LWP to RD (r=0.955-iForest 10: 669-679 675…”

Section: Wood Density and Growth Componentsmentioning

confidence: 99%

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Physical, chemical and mechanical properties of Pinus sylvestris wood at five sites in Portugal

Fernandes¹,

Gaspar²,

Pires³

et al. 2017

iForest

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(4-5)The reduction of resinous species in Portuguese forest areas has caused constraints to wood industry supplies. Portugal represents the extreme southwest of Scots pine (Pinus sylvestris) natural distribution and large gaps exist in the knowledge of its wood-quality characteristics. Understanding the relationship between these traits is important for recognizing which combination of wood properties is the most suitable for specific uses. To address these questions, we assessed wood-quality traits, namely, wood-density components (microdensitometric analysis), chemical composition (NIR spectrometry) and mechanical properties (bending tests) of wood samples collected at five representative forest sites in Portugal. Our results showed that Portuguese Pinus sylvestris has good radial growth and denser wood, higher extractive content and higher stiffness and strength than northern European provenances. The lignin content was within the range attributed to softwoods. Among the Portuguese stands, trees growing at lower-altitude sites exhibited denser wood and higher mechanical properties, while trees from high-elevations showed higher amounts of lignin. Ring density was more strongly correlated with earlywood than latewood density. A negative, non-significant correlation was found between ring density and width, supporting the assumption that the higher radial growth (ring width) does not negatively affect wood quality (density). In general, chemical properties had a weak relationship with physical and mechanical properties (MOE and MOR). Both mechanical traits were positively correlated with density and growth components, supporting the assumption that trees with high radial growth do not exhibit poorer mechanical performances.

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Section: Wood Density and Growth Componentsmentioning

confidence: 91%

Section: Wood Density and Growth Componentsmentioning

confidence: 98%

See 1 more Smart Citation

Physical, chemical and mechanical properties of Pinus sylvestris wood at five sites in Portugal

Fernandes¹,

Gaspar²,

Pires³

et al. 2017

iForest

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show abstract

“…Studies assessing genetic and phenotypic effects on wood characteristics in Pinus pinaster have indicated that earlywood characteristics are prone to genetic control, whereas latewood components are more strongly influenced by environmental factors (Gaspar et al, 2008a,b). These studies have also indicated the high heritability of wood density and the high genetic correlation between wood density and early wood density (Gaspar et al, 2008a), suggesting that breeding programmes to select this wood property by increasing either earlywood density, latewood percent, or both of these traits, would be profitable.…”

Section: Effect Of Site Tree and Stand Variables On Mean Tree Moe Trmentioning

confidence: 99%

Modelling modulus of elasticity of Pinus pinaster Ait. in northwestern Spain with standing tree acoustic measurements, tree, stand and site variables

et al. 2014

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IntroductionPinus pinaster Ait. is one of the most important coniferous species used in the timber industry in Spain, especially in Galicia (NW Spain) where it covers around 587,000 ha of land and is the main forest industry resource. More than 2.8 million cubic meters of Pinus pinaster round wood are produced annually in Galicia, representing 72% of the total production of the species in Spain. Recent studies have demonstrated the good mechanical properties of Galician P. pinaster timber, which make it suitable for structural use (Riesco and Díaz González, 2007;Carballo et al., 2009).Forest management and climatic and soil factors have important effects on softwood properties (e.g. Lasserre et al., 2004;Moore et al., 2009;Roth et al., 2007;Watt et al., 2006;. Studies carried out in different regions have assessed the influence of these factors on the variation in wood properties in coniferous species (e.g. Lei et al., 2005;Liu et al., 2007, or Ikonen et al., 2008. The use of portable acoustic devices that estimate timber stiffness from measurements made on standing trees (e.g. Wang et al., 2001b;Merlo et al., 2008Merlo et al., , 2009Santaclara et al., 2011) is a key element of these studies. Stiffness (quantified by the modulus of elasticity, MOE) is an important mechanical property of timber and it is commonly measured in machine grading of timber strength. It is also the index parameter considered by Abstract Aim of study:Modelling the structural quality of Pinus pinaster Ait. wood on the basis of measurements made on standing trees is essential because of the importance of the species in the Galician forestry and timber industries and the good mechanical properties of its wood. In this study, we investigated how timber stiffness is affected by tree and stand properties, climatic and edaphic characteristics and competition.Area of study: The study was performed in Galicia, north-western Spain. Material and methods:Ten pure and even-aged P. pinaster stands were selected and tree and stand variables and the stress wave velocity of 410 standing trees were measured. A sub-sample of 73 trees, representing the variability in acoustic velocity, were felled and sawed into structural timber pieces (224) which were subjected to a bending test to determine the modulus of elasticity (MOE).Main results: Linear models including wood properties explained more than 97%, 73% and 60% of the observed MOE variability at site, tree and board level, respectively, with acoustic velocity and wood density as the main regressors. Other linear models, which did not include wood density, explained more than 88%, 69% and 55% of the observed MOE variability at site, tree and board level, respectively, with acoustic velocity as the main regressor. Moreover, a classification tree for estimating the visual grade according to standard UNE 56544:2011 was developed.Research highlights: The results have demonstrated the usefulness of acoustic velocity for predicting MOE in standing trees. The use of the fitted equations together with existing d...

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“…Korelasi genetik sangat penting untuk memprediksi pengaruh dan efektifitas seleksi yang dilakukan terhadap suatu sifat (Gaspar, et al, 2008). Korelasi …”

Section: Korelasi Genetikunclassified

Evaluasi Uji Keturunan Cendana (Santalum Album Linn.) Umur 8 Bulan Di Kabupaten Timor Tengah Utara-Nusa Tenggara Timur

Sumardi¹,

Kurniawan²,

Misto³

2014

JPTH

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Genetic correlations between wood quality traits of Pinus pinaster Ait

Cited by 24 publications

References 26 publications

Physical, chemical and mechanical properties of Pinus sylvestris wood at five sites in Portugal

Physical, chemical and mechanical properties of Pinus sylvestris wood at five sites in Portugal

Modelling modulus of elasticity of Pinus pinaster Ait. in northwestern Spain with standing tree acoustic measurements, tree, stand and site variables

Evaluasi Uji Keturunan Cendana (Santalum Album Linn.) Umur 8 Bulan Di Kabupaten Timor Tengah Utara-Nusa Tenggara Timur

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