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Inheritance of static bending properties and classification of load-deflection curves in Cryptomeria japonica
Holzforschung ( IF 2.4 ) Pub Date : 2020-08-06 , DOI: 10.1515/hf-2019-0316
Yusuke Takahashi 1 , Futoshi Ishiguri 1 , Haruna Aiso 2 , Yuya Takashima 3 , Yuichiro Hiraoka 2 , Taiichi Iki 4 , Jyunichi Ohshima 1 , Kazuya Iizuka 1 , Shinso Yokota 1
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Abstract To clarify inheritance of static bending properties in relation to elastic and plastic regions, air-dry density, microfibril angle of the S2 layer in latewood tracheid (MFA), and static bending properties (modulus of elasticity [MOE], modulus of rupture [MOR] and bending work) were examined for juvenile wood of 18 full-sib families in 20-year-old Cryptomeria japonica. Heritability of all traits ranged from 0.12 (bending work) to 0.51 (air-dry density). Based on the results from principal component analysis (PCA) and cluster analysis, the families were classified into four groups with different types of load-deflection curves, suggesting that both elastic properties and deflection in plastic region differed among families. Furthermore, families included in a group were produced from specific parents, suggesting that deflection in plastic region as well as elastic property is inheritable. It can be concluded that mating parents may affect elasticity and plasticity of offspring.

中文翻译:

柳杉静弯曲特性的继承和荷载-挠度曲线的分类

摘要 为了阐明与弹性和塑性区域、风干密度、晚材管胞 (MFA) 中 S2 层的微纤维角和静态弯曲特性(弹性模量 [MOE]、断裂模量 [ MOR] 和弯曲工作)在 20 岁的 Cryptomeria japonica 中检查了 18 个全同胞家庭的幼木。所有性状的遗传力范围从 0.12(弯曲功)到 0.51(风干密度)。根据主成分分析(PCA)和聚类分析的结果,将族分为四组,具有不同类型的载荷-挠度曲线,表明各族之间的弹性特性和塑性区挠度均不同。此外,包含在一个组中的家庭是由特定的父母产生的,表明塑性区域的挠度以及弹性特性是可继承的。可以得出结论,交配的父母可能会影响后代的弹性和可塑性。
更新日期:2020-08-06
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