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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Genetic Improvement of Sawn-Board Stiffness and Strength in Scots Pine (Pinus sylvestris L.)
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Genetic Improvement of Sawn-Board Stiffness and Strength in Scots Pine (Pinus sylvestris L.)

机译：樟子松锯板刚度和强度的遗传改良

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Given an overall aim of improving Scots pine structural wood quality by selective tree breeding, we investigated the potential of non-destructive acoustic sensing tools to accurately predict wood stiffness (modulus of elasticity, MOE) and strength (modulus of rupture, MOR) of sawn boards. Non-destructive measurements of wood density (DEN), acoustic velocity (VEL) and MOE were carried out at different stages of wood processing chain (standing trees, felled logs and sawn boards), whilst destructively measured stiffness and strength served as benchmark traits. All acoustic based MOE and VEL estimates proved to be good proxies ( > 0.65) for sawn-board stiffness while MOE , VEL and resistograph wood density (DEN ) measured on standing trees and MOE and VEL measured on felled logs well reflected board strength. Individual-tree narrow-sense heritability ( ) for VEL, MOE and MOR were weak (0.05–0.26) but were substantially stronger for wood density (0.34–0.40). Moreover, additive genetic coefficients of variation for MOE and MOR were in the range from 5.4% to 9.1%, offering potential targets for exploitation by selective breeding. Consequently, selective breeding based on MOE , DEN or stem straightness (STR) could improve several structural wood traits simultaneously.
机译：鉴于通过选择性树木育种提高苏格兰松树结构木材质量的总体目标，我们研究了无损声学传感工具准确预测锯材的木材刚度（弹性模量，MOE）和强度（断裂模量）的潜力。板。在木材加工链的不同阶段（站立的树木，砍伐的原木和锯切的木板）对木材密度（DEN），声速（VEL）和MOE进行了非破坏性测量，而破坏性测量的刚度和强度则作为基准特征。事实证明，所有基于声学的MOE和VEL估计值都是锯板刚度的良好代表（> 0.65），而在站立的树木上测量的MOE，VEL和抗蚀剂木材密度（DEN），在砍伐的原木上测量的MOE和VEL很好地反映了板的强度。 VEL，MOE和MOR的单树窄义遗传力（）较弱（0.05–0.26），而木材密度则明显更强（0.34–0.40）。此外，MOE和MOR的累加遗传变异系数在5.4％至9.1％的范围内，为选择性育种提供了潜在的目标。因此，基于MOE，DEN或茎直度（STR）的选择性育种可以同时改善几种结构性状。

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