Influence of Cambial Age and Growth Conditions on Microfibril Angle in Young Norway Spruce (Picea abies L. Karst.)

Håkan Lindström; James W. Evans; Steve P. Verrill

doi:10.1515/hfsg.1998.52.6.573

$Introduction MfA in tracheid cell walls and its influence on forest products The tracheid cell wall consists of three secondary layers SI, S2 and S3, each composed of microfibrils i.e. cellulose crystalline fibrils embedded in hemicellulose and lignin. A distinct orientation between the cell axis and the fibrils has been found for each layer, where the SI- and S3-layers have high fibril angle, while the fibrils in the predominant S2-layer are more aligned with the cell axis (Mark 1967; Fujita and Harada 1991; Saka 1993). MfA has been found to influence shrinkage of wood (Harris and Meylan 1965; Meylan 1968; Barrett et al 1972; Boyd 1983; Watanabe and Norimoto 1994; Ying el al 1994; Persson 1997), and the mechanical properties of wood (Schniewind 1966; Cave 1968; Meylan 1968; Mark and Gillis 1973; Megraw 1985; Bendtsen and Senft 1986; Cave and Walker 1994; Persson 1997).In addition, differences in paper properties such as stretch, stiffness, and strength have in part been ascribed to MfA (Watson and Dadswell 1964; Kellogg et al 1975; Armstrong et al 1911 \ Page et al 1911 \ Megraw 1985). The function of MfA in a living conifer tree During formation of a tracheid's primary wall$

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Influence of Cambial Age and Growth Conditions on Microfibril Angle in Young Norway Spruce (Picea abies L. Karst.)

Lindström, Håkan; Evans, James W.; Verrill, Steve P.

Follow Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood , Volume 52 (6) de Gruyter – Jan 1, 1998

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Influence of Cambial Age and Growth Conditions on Microfibril Angle in Young Norway Spruce (Picea abies L. Karst.)

Lindström, Håkan; Evans, James W.; Verrill, Steve P.

Follow Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood , Volume 52 (6) de Gruyter – Jan 1, 1998

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