Effects of Clonal Selection by Microfibril Angle on the Genetic Improvement of Stiffness in Cryptomeria japonica D. Don
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R. Nakada
Summary
The microfibril angle (MFA) of latewood tracheids and its radial variation at breast height in Cryptomeria japonica D. Don (sugi) were investigated with twelve clones collected from three sites in the Kyushu region, Japan. Large variations both between clones and between sites were observed. The MFAs were well correlated to the stiffness of the logs collected from the sample trees. A simulation of clonal selection according to the ranking of the clones in MFA demonstrated that the log stiffness of the selected population was much improved even when the selection relied on MFAs in the second ring from the pith. The improvement in log stiffness by MFA selection was not different from the selection by log stiffness itself. The results indicate that early selection by MFA is very effective in improving log stiffness in this species.
Copyright © 2003 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Natural Decay Resistance of Juvenile Teak Wood Grown in High Input Plantations
- The Need for Unequivocally Defined Reference Fungi-Genomic Variation in Two Strains Named as Coniophora puteana BAM Ebw. 15
- The Oriented Structure of Lignin and its Viscoelastic Properties Studied by Static and Dynamic FT-IR Spectroscopy
- Formation of β-O-4 Lignin Models -A Theoretical Study
- Synthesis of Lignin-Related Cinnamaldehydes
- Synthesis of Coniferins 13C-Enriched at Position 4 or 5 of the Guaiacyl Ring
- Alkaline Chemi-Mechanical Pulp from Poplar. Relationship between Chemical State, Swelling and Papermaking Properties
- Effect of Ozonation on Assembly of Xylans
- Oxidized Derivatives of Lipophilic Extractives Formed during Hardwood Kraft Pulp Bleaching
- Optimization of a Laccase-Mediator Stage for TCF Bleaching of Flax Pulp
- Analysis of Pinus radiata D. Don Bark by Near Infrared Spectroscopy
- Analysis of Black Wattle (Acacia mearnsii De Wild) Bark by Near Infrared Spectroscopy
- Computer Aided Identification of the Moisture Transport Parameters in Spruce Wood
- Effect of High Temperature on the Change in Color, Dimensional Stability and Mechanical Properties of Spruce Wood
- The Adjusted Dynamic Modulus of Elasticity Above the Fiber Saturation Point in Taiwania Plantation Wood by Ultrasonic-Wave Measurement
- Effects of Clonal Selection by Microfibril Angle on the Genetic Improvement of Stiffness in Cryptomeria japonica D. Don
- Observation of Development of Microcracks on Wood Surface Caused by Drying Stresses
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