Axial variations in anatomical properties and basic density of Eucalypt urograndis hybrid(Eucalyptus grandis × E. urophylla)clones

作     者：S. K. Sharma S. R. Shukla S. Shashikala V. Sri Poornima 

作者机构：Wood Properties and Engineered Wood Division Institute of Wood Science and Technology P.O. MalleswaramBangalore 560 003 India 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2015年第26卷第3期

页      面：739-744页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 08[工学] 0829[工学-林业工程] 09[农学] 0901[农学-作物学] 

主　　题：Eucalypt urograndis hybrid (Eucalyptusgrandis × E. urophylla) Fibre characteristics - Vesselcharacteristics - Wood density Bark density 

摘      要：We studied two clones of Eucalypt urograndis hybrid （Eucalyptus grandis × E. urophylla）, GR283 and GR330, grown in Tumkur district of Kamataka （India）, and felled 5-6 years old three trees of each clone. We recorded axial variations in heartwood content, bark properties, wood density and anatomical characteristics of wood in- cluding fibre length, fibre diameter, fibre wall thickness, lumen diameter, vessel frequency, vessel diameter and vessel element length. Clone GR283 had about 10 % heartwood, significantly lower than for clone GR330 （37 %）. Basic wood density along the tree height varied significantly within and between the clones. We observed significant variations in fibre length, fibre diameter and wall thickness within and between the two clones. Vessel frequency and vessel element length did not vary but vessel diameter differed significantly between the clones. With a greater proportion of sapwood, clone GR283 can be uti- lized for paper and pulp applications. Clone GR330 had a higher proportion of heartwood and lower wood density and, hence, is more suitable for light-weight material applications.