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.

Inheritance of density, microfibril angle, and modulus of elasticity in juvenile wood of Pinus radiata at two locations in Australia

2007 ◽  
Vol 37 (11) ◽  
pp. 2164-2174 ◽  
Author(s):  
Brian S. Baltunis ◽  
Harry X. Wu ◽  
Mike B. Powell
Keyword(s):  
Genetic Correlation ◽  
Pinus Radiata ◽  
Modulus Of Elasticity ◽  
Juvenile Wood ◽  
Wood Quality ◽  
Genetic Correlations ◽  
Microfibril Angle ◽  
Wood Properties ◽  
Quality Traits ◽  
Selection For

A total of 1640 increment cores from 343 radiata pine ( Pinus radiata D. Don) families were sampled at two second-generation progeny trials, aged 6 and 7 years, for a detailed genetic study of juvenile wood quality traits. Density, microfibril angle (MFA), and modulus of elasticity (MOE) were determined from pith to bark using SilviScan® technology. Heritability was greatest for area-weighted density at the two sites (0.63 and 0.77, respectively), and the lowest for growth traits (<0.23). Genotype by environment interaction was low for all three wood quality traits. A positive genetic correlation between density and MOE (0.43), and a highly negative, and therefore, favourable genetic correlation between MFA and MOE (–0.92) were observed, implying that improvement of multiple juvenile wood properties is possible. The genetic correlations between whole-core wood quality traits and individual-ring measurements suggest that improvement for juvenile wood properties across the entire profile of the corewood including the innermost rings can be achieved. However, density, MFA, and MOE had unfavourable genetic correlations with diameter growth suggesting that selection for increased density and MOE, and reduced MFA in the absence of selection for growth will result in a genetic loss for growth rate.

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

Can wood properties be predicted from the morphological traits of a tree? A canonical correlation study of plantation-grown white spruce

2012 ◽  
Vol 42 (8) ◽  
pp. 1518-1529 ◽  
Author(s):  
Patrick Lenz ◽  
Michèle Bernier-Cardou ◽  
John MacKay ◽  
Jean Beaulieu
Keyword(s):  
Value Chain ◽  
Morphological Traits ◽  
Wood Quality ◽  
Microfibril Angle ◽  
Ring Width ◽  
White Spruce ◽  
Correlation Study ◽  
Cell Diameter ◽  
Tree Morphology ◽  
Wood Traits

There is a growing interest in predicting wood quality from tree morphology traits, which can be measured using remote sensing techniques such as LiDAR, to enhance forest inventory for operational planning. In this study, we investigated the correlation structure between these two categories of traits in white spruce (Picea glauca (Moench) Voss) using canonical and multiple regression analyses with the objective of identifying key morphology variables that are predictive of wood quality. For 495 trees from a 30-year-old plantation, we obtained measurements of tree height and dimensions of the living crown, as well as the number and diameter of live branches at selected whorls. Wood traits were assessed from wood cores with SilviScan technology. Morphological traits explained almost 29% of the overall variation observed in wood traits. However, the magnitude of the correlations and the ability of crown morphological traits to predict wood traits differed widely among the latter. Average ring width and radial cell diameter, both related to increment, were well correlated with tree morphology, whereas traits related to subcellular structure, for instance, microfibril angle, were poorly correlated. These results could guide the choice of wood traits to improve inventory techniques aiming to optimize the forest product value chain.

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.

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

Influence of Growth Rate and Cambial Age on Density of Rauli (Nothofagus nervosa) in Relation to Vessel Lumen Areas and Numbers

Holzforschung ◽  
1999 ◽  
Vol 53 (2) ◽  
pp. 199-203 ◽  
Author(s):  
M. P. Denne ◽  
C. M. Cahalan ◽  
D. P. Aebischer
Keyword(s):  
Growth Rate ◽  
Wood Density ◽  
Wood Quality ◽  
Ring Width ◽  
Substantial Effect ◽  
Present Sample ◽  
Vessel Lumen ◽  
Cambial Age ◽  
Old Trees ◽  
Nothofagus Nervosa

Summary To assess the likely effects of silvicultural treatment on the wood quality of Nothofagus nervosa grown in the UK, and the possibilities of independent selection within seed origins for density and growth rate, ring width and wood density were analysed from pith to bark of 19 trees. Variations in vessel lumen size, vessel number mm−2, and total lumen area mm−2 were analysed in ten trees. Since density increased by only 0.005g cm−3 per mm increase in ring width, silvicultural practices such as initial spacing and thinning are not likely to have a substantial effect on the wood density of rauli. Similarly, variation in density with cambial age was significant but relatively minor in the 40- and 60-year old trees of the present sample, suggesting that the rotation length is unlikely to have any practical influence on the density of rauli. Considerable between-tree differences in density were found which did not correspond to differences in ring width, suggesting it should be feasible to select independently for density and growth rate. These differences in density were associated with differences in both vessel lumen size and vessel number mm−2

Genetics of wood stiffness and its component traits inPinus radiata

2006 ◽  
Vol 36 (5) ◽  
pp. 1165-1178 ◽  
Author(s):  
Heidi S Dungey ◽  
A Colin Matheson ◽  
Dominic Kain ◽  
Robert Evans
Keyword(s):  
New Zealand ◽  
Genetic Correlations ◽  
Microfibril Angle ◽  
Early Selection ◽  
Stiffness Modulus ◽  
Wood Stiffness ◽  
South Wales ◽  
Age Related ◽  
Component Traits ◽  
Selection For

The potential for breeding Pinus radiata D. Don to improve wood stiffness (modulus of elasticity, MoE) was examined by obtaining pith-to-bark cores from trees at breast height in two independent genetic trials. The effectiveness of early selection for stiffness and indirect selection on the component traits, microfibril angle (MfA) and wood density, was determined as well as the age-related changes in the genetic variation of these traits. The first trial comprised 50 open-pollinated families in the central North Island, New Zealand. The second trial comprised 20 control-pollinated families in New South Wales, Australia. The genetic control of MfA, density, and MoE was found to be high in the corewood and moderate in the outerwood. Estimated genetic correlations suggested that early selection for most traits would be successful but could be carried out slightly earlier at the New Zealand site than at the Australian site. To maximize gain in the corewood, selection for MoE and MfA would be most effective around rings 4-8. There were no adverse correlations between MoE and MfA or density, implying that selection for MoE would also improve MfA and density.

scholarly journals Growth and Wood Trait Relationships of Alnus glutinosa in Peatland Forest Stands With Contrasting Water Regimes

2022 ◽  
Vol 12 ◽  
Author(s):  
Alba Anadon-Rosell ◽  
Tobias Scharnweber ◽  
Georg von Arx ◽  
Richard L. Peters ◽  
Marko Smiljanić ◽  
...  
Keyword(s):  
Wood Density ◽  
Water Table ◽  
Ring Width ◽  
Alnus Glutinosa ◽  
Specific Response ◽  
Widespread Species ◽  
Wood Trait ◽  
Wood Traits ◽  
Extreme Flooding ◽  
Density Correlations

Human-driven peatland drainage has occurred in Europe for centuries, causing habitat degradation and leading to the emission of greenhouse gases. As such, in the last decades, there has been an increase in policies aiming at restoring these habitats through rewetting. Alder (Alnus glutinosa L.) is a widespread species in temperate forest peatlands with a seemingly high waterlogging tolerance. Yet, little is known about its specific response in growth and wood traits relevant for tree functioning when dealing with changing water table levels. In this study, we investigated the effects of rewetting and extreme flooding on alder growth and wood traits in a peatland forest in northern Germany. We took increment cores from several trees at a drained and a rewetted stand and analyzed changes in ring width, wood density, and xylem anatomical traits related to the hydraulic functioning, growth, and mechanical support for the period 1994–2018. This period included both the rewetting action and an extreme flooding event. We additionally used climate-growth and climate-density correlations to identify the stand-specific responses to climatic conditions. Our results showed that alder growth declined after an extreme flooding in the rewetted stand, whereas the opposite occurred in the drained stand. These changes were accompanied by changes in wood traits related to growth (i.e., number of vessels), but not in wood density and hydraulic-related traits. We found poor climate-growth and climate-density correlations, indicating that water table fluctuations have a stronger effect than climate on alder growth. Our results show detrimental effects on the growth of sudden water table changes leading to permanent waterlogging, but little implications for its wood density and hydraulic architecture. Rewetting actions should thus account for the loss of carbon allocation into wood and ensure suitable conditions for alder growth in temperate peatland forests.

Sign in / Sign up

Export Citation Format

Share Document