scholarly journals Very early selection for solid wood quality: screening for early winners

2009 ◽  
Vol 66 (6) ◽  
pp. 601-601 ◽  
Author(s):  
Luis A. Apiolaza
Keyword(s):  
Wood Quality ◽  
Solid Wood ◽  
Early Selection ◽  
Selection For

scholarly journals Efficiency of early selection for rotation-aged wood quality traits in radiata pine

2007 ◽  
Vol 64 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Harry X. Wu ◽  
Mike B. Powell ◽  
Junli L. Yang ◽  
Milo Ivković ◽  
Tony A. McRae
Keyword(s):  
Wood Quality ◽  
Radiata Pine ◽  
Early Selection ◽  
Quality Traits ◽  
Selection For

Age trend of heritability, genetic correlation, and efficiency of early selection for wood quality traits in Scots pine

2015 ◽  
Vol 45 (7) ◽  
pp. 817-825 ◽  
Author(s):  
Zhou Hong ◽  
Anders Fries ◽  
Harry X. Wu
Keyword(s):  
Genetic Correlation ◽  
Wood Density ◽  
Scots Pine ◽  
Wood Quality ◽  
Microfibril Angle ◽  
Ring Width ◽  
Early Selection ◽  
Quality Traits ◽  
Wood Traits ◽  
Selection For

To examine the efficiency of early selection for wood quality traits in the Scots pine (Pinus sylvestris L.) breeding program in Sweden, a total of 778 wood increment cores were sampled from 179 full-sib families in a single progeny trial at 40 years of age. Age trend of inheritance, age–age genetic correlation, and early selection efficiency for eight wood traits including annual ring width, wood density, microfibril angle (MFA), modulus of elasticity (i.e., wood stiffness; MOE), and fibre dimensions were studied. Heritabilities for the eight wood traits reached a plateau between age 5 years and age 15 years, with the highest heritability for radial fibre width and fibre coarseness (∼0.6) and the lowest heritability for ring width (∼0.2). Heritability reached about 0.4 for both wood density and MFA but only reached about 0.3 for MOE. Genetic correlation from early to reference age 30 years reached a very high level (>0.8) for all eight wood traits at age 5 years. Early selection was effective for wood quality traits in Scots pine, and selection at age 8 years is recommended for MOE in Scots pine.

scholarly journals Genetic analysis of lodgepole pine (Pinus contorta) solid-wood quality traits

2017 ◽  
Vol 47 (10) ◽  
pp. 1303-1313 ◽  
Author(s):  
Haleh Hayatgheibi ◽  
Anders Fries ◽  
Johan Kroon ◽  
Harry X. Wu
Keyword(s):  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Dynamic Stiffness ◽  
Wood Quality ◽  
Genetic Correlations ◽  
Microfibril Angle ◽  
Ring Width ◽  
Wood Properties ◽  
Solid Wood ◽  
Early Selection

Potential improvement of lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) solid-wood properties was examined by estimating age trends of inheritance, age–age genetic correlations, and the efficiency of early selection using 823 increment cores sampled from 207 half-sib families at two independent progeny trials, aged 34–35 years, located in northern Sweden. High-resolution radial variation of annual ring width, wood density, microfibril angle (MFA), and modulus of elasticity (clearwood stiffness; MOES) was measured using SilviScan. The dynamic stiffness (MOEtof) of standing trees was also obtained using Hitman ST300. Heritabilities ranged from 0.10 to 0.64 for growth and earlywood, transition-wood, and latewood proportions, from 0.29 to 0.77 for density traits, and from 0.13 to 0.33 for MFA and stiffness traits. Genetic correlations between early age and the reference age (26 years) suggested that early selection is efficient at age 4 years for MFA and between ages 5 to 8 years for density and MOES. Unfavorable diameter–stiffness genetic correlations and correlated responses indicate that breeding for a 1% increase in diameter would confer 5.5% and 2.3% decreases in lodgepole pine MOES and MOEtof, respectively. Index selection with appropriate economical weights for growth and wood stiffness is highly recommended for selective breeding.

Genetic analysis of fiber-dimension traits and combined selection for simultaneous improvement of growth and stiffness in lodgepole pine (Pinus contorta)

2019 ◽  
Vol 49 (5) ◽  
pp. 500-509 ◽  
Author(s):  
Haleh Hayatgheibi ◽  
Anders Fries ◽  
Johan Kroon ◽  
Harry X. Wu
Keyword(s):  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Selection Index ◽  
Wood Quality ◽  
Genetic Correlations ◽  
Solid Wood ◽  
Fiber Wall ◽  
Wood Traits ◽  
Selection For ◽  
Combined Selection

Quantitative genetic variation of fiber-dimension traits and their relationship with diameter at breast height (DBH) and solid-wood traits (i.e., density and modulus of elasticity (MOE)) was investigated in lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.). A total of 823 increment cores were sampled from 207 half-sib families at two independent progeny trials, aged 34–35 years, located in northern Sweden. High-resolution pith-to-bark profiles were obtained for radial fiber width (RFW), tangential fiber width (TFW), fiber wall thickness (FWT), and fiber coarseness (FC) using SilviScan. Heritabilities ranged from 0.29 to 0.74, and inheritance increased with cambial maturity. Estimated age–age genetic correlations indicate that early selection between ages 5 and 8 years is highly efficient. Our results indicate that selection for a 1% increase in DBH or MOE incurs a negligible effect on fiber-dimension traits and maximum genetic gains are reached when DBH and MOE are considered jointly. Moreover, simultaneous improvement of growth and stiffness is achievable when a selection index with 7 to 10 economical weights for MOE relative to 1 for DBH is incorporated. However, the unfavorable relationship between solid-wood traits and pulp and paper related traits suggests that breeding strategies must be implemented to improve wood quality of lodgepole pine for multiple uses.

scholarly journals Genomic selection for resistance to spruce budworm in white spruce and relationships with growth and wood quality traits

2020 ◽  
Vol 13 (10) ◽  
pp. 2704-2722 ◽  
Author(s):  
Jean Beaulieu ◽  
Simon Nadeau ◽  
Chen Ding ◽  
Jose M. Celedon ◽  
Aïda Azaiez ◽  
...  
Keyword(s):  
Genomic Selection ◽  
Wood Quality ◽  
Spruce Budworm ◽  
White Spruce ◽  
Quality Traits ◽  
Selection For

scholarly journals Genomic selection for growth and wood quality in Eucalyptus: capturing the missing heritability and accelerating breeding for complex traits in forest trees

2012 ◽  
Vol 194 (1) ◽  
pp. 116-128 ◽  
Author(s):  
Marcos D. V. Resende ◽  
Márcio F. R. Resende ◽  
Carolina P. Sansaloni ◽  
Cesar D. Petroli ◽  
Alexandre A. Missiaggia ◽  
...  
Keyword(s):  
Genomic Selection ◽  
Complex Traits ◽  
Wood Quality ◽  
Forest Trees ◽  
Missing Heritability ◽  
Selection For

Raw material factors affecting the quota of structural wood in sawmill production

2019 ◽  
Vol 107 ◽  
pp. 124-130
Author(s):  
MAREK WIERUSZEWSKI ◽  
RADOSŁAW MIRSKI ◽  
ADRIAN TROCIŃSKI
Keyword(s):  
Raw Materials ◽  
Wood Quality ◽  
Strength Properties ◽  
Solid Wood ◽  
Wood Products ◽  
Raw Material ◽  
Factors Affecting ◽  
Research Technology ◽  
Main Indicator ◽  
Round Wood

Construction wood has to meet high requirements for loads capacity. Thanks to the selection and adequate classification of raw materials it is possible to decide how specific wood products can and should be used. The usage of solid wood for structural elements purposes has been precisely classified and specified in standardized requirements. Twelve classes of structural timber, ranging from C14 to C50, have been identified for softwood. Only part of Polish raw wood meets the standards of strength classes required in the building industry, as its strength corresponds to classes C24 and C30. A conclusion from research on the assortment structure of the raw materials in Poland was formed that it is particularly important to sort wood effectively according to its quality and intended use during processing. The material and strength efficiency is the main indicator of rational use of wood. The research resulted in setting the initial classification limits of selected round wood groups according to its strength. Properties determining the possibilities of obtaining a high quality product from the available raw wood material were taken into account in the research. Crucial factor was to select the proper research technology of determining dependencies between the applied research methodology and the defined wood quality, sorting class and strength class. The lower limit of availability of raw material with appropriate technical characteristics is determined during the selection of the research formula.

Early selection for forcing ability in tulip (Tulipa L.) breeding

Euphytica ◽  
1983 ◽  
Vol 32 (1) ◽  
pp. 75-83 ◽  
Author(s):  
J. P. Van Eijk ◽  
S. J. Toxopeus ◽  
W. Eikelboom ◽  
L. D. Sparnaaij
Keyword(s):  
Early Selection ◽  
Selection For ◽  
Forcing Ability
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