COMPRESSION WOOD CONTENT IN LOBLOLLY PINE AND ITS IMPACT ON TREE BREEDING PROGRAM FOR WOOD PROPERTIES
All loblolly pine trees, especially the juvenile portion, contain various amount of compression wood. The morphological, chemical and papermaking properties of compression wood are distinctively different from those of normal juvenile wood and mature wood. Compression wood has higher lignin and galactan but lower cellulose and mannan content, shorter average fiber length, lower fiber width but thicker cell wall, higher fiber coarseness and higher microfibril angles as compared with the corresponding normal wood. A micro analytical method has been developed to quantitatively determine the percentage of compression wood in an incremental core so as to eliminate the effects of compression wood on the aforementioned properties. This enables accurate quantitative genetic analyses of these properties in tree breeding program.
loblolly pine Juvenile portion mature wood Compression wood lignin galactan microfibril
Hou-min Chang Chen Qingmin Hu Zhoujian Li Bailian
Department of Wood and Paper Science, North Carolina State University, Raleigh, NC 27695-8005, USA
国际会议
广州
英文
2-6
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）