林业科学Issue(11)：96-103,8.DOI:10.11707/j.1001-7488.20141113
无损检测在日本落叶松材性育种中的应用前景探讨
Application Prospect on Applying Nondestructive Testing Technology in Wood Property Breeding of Larix kaempferi
摘要
Abstract
The phenotypic and genetic variation of nondestructive testing traits among 20 clones of the living trees of Larix kaempferi by using Pilodyn and microsecond timer were studied. Variant analysis revealed that the phenotypic and genetic variation coefficients for SWV( stress wave velocity) were 5. 09% and 3. 57%,which higher than those of Ps and Pn. The clonal repeatability for the nondestructive testing traits ranged from 0. 34 to 0. 48 in this study,which meant that variation in nondestructive testing traits of L. kaempferi were controlled genetically at medium level. The correlations between nondestructive testing traits and wood properties were analysed,and the results showed that there were significant negative correlations between Ps,Pn and ring density,early wood density,ring wall thickness to lumen area and early wood wall thickness to lumen area. The SWV had significant negative correlations with ring microfibrillar angle,early wood microfibrillar angle and late wood microfibrillar angle,but had significant positive correlations with ring modulus of elasticity,early wood modulus of elasticity and late wood modulus of elasticity. The results of the multiple regression analysis showed that the top two contribution rates of wood property to the Ps,Pn and SWV were ring density and early wood wall thickness to lumen area,ring density and ring wall thickness to lumen area,and early wood microfibrillar angle and ring modulus of elasticity. Linear regression equations between nondestructive testing traits and corresponding wood properties were constituted,and the results showed that the coefficient of determination of linear regression equation between Ps and ring density (0. 340) was slightly smaller than those of Pn(0. 360). The coefficients of determination of linear regression equations between SWV and early wood microfibrillar angle,ring modulus of elasticity were 0. 348 and 0. 316 .关键词
日本落叶松/无损检测/材质性状/相关关系/线性回归Key words
Larix kaempferi/nondestructive testing/wood property/correlation coefficient/linear regression分类
农业科技引用本文复制引用
易敏,赖猛,孙晓梅,张守攻,赵鲲..无损检测在日本落叶松材性育种中的应用前景探讨[J].林业科学,2014,(11):96-103,8.基金项目
国家“十二五”科技支撑项目“北方针叶树种高世代育种技术研究与示范”(2012BAD01B01)。 （2012BAD01B01）
