Age trends and correlations of growth and wood properties in clone of Eucalyptus urophylla × E. grandis in Guangdong, China  

作　　者：WU Shi-jun XU Jian-min LI Guang-you Du Zhi-hu LU Zhao-hua LI Bao-qi 

机构地区：[1]Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,Guangdong,China

出　　处：《Journal of Forestry Research》2012年第3期467-472,共6页林业研究（英文版）

基　　金：This study was undertaken as a project for National Key Technology R&D Program for the 12th Five-year Plan(China) "Breeding and Selection of New Variety with High Yield and High Resistance of Eucalyptus"(2012BAD01B04-1);Special Fund for Forestry Industry Research in the Public Interest "Project of Veneer Variety Breeding and Cultivation Model Optimization for Eucalyptus"(201104003-07)

摘　　要：We assessed growth traits and wood properties ofDH32-29, a clone of Eucalyptus urophylla x E. grandis, at age of two to six years in Guangdong in China. Analysis of variance of studied traits showed that there were significant differences （1% level） on all studied traits among ages except for wood basic density. Analysis of age trends of growth traits and wood properties revealed that rotation length of DH32-29 should be more than six years or longer. Phenotypic correlations among traits at individual ages indicated that correlations between growth traits were strongly positive. There was significant change in relationship between growth and wood basic density with increasing age, ranging from -0.03 to -0.54 at 2 and 5 year and 0.003 to 0.3 at 3, 4 and 6 year. Correlations between Pilodyn pin penetration and basic density measured on increment cores showed that Pilodyn could rank or group genotypes or sites into density classes, but failure to predict individual tree and individual clone.We assessed growth traits and wood properties ofDH32-29, a clone of Eucalyptus urophylla x E. grandis, at age of two to six years in Guangdong in China. Analysis of variance of studied traits showed that there were significant differences （1% level） on all studied traits among ages except for wood basic density. Analysis of age trends of growth traits and wood properties revealed that rotation length of DH32-29 should be more than six years or longer. Phenotypic correlations among traits at individual ages indicated that correlations between growth traits were strongly positive. There was significant change in relationship between growth and wood basic density with increasing age, ranging from -0.03 to -0.54 at 2 and 5 year and 0.003 to 0.3 at 3, 4 and 6 year. Correlations between Pilodyn pin penetration and basic density measured on increment cores showed that Pilodyn could rank or group genotypes or sites into density classes, but failure to predict individual tree and individual clone.

关 键 词：EUCALYPT age trends growth traits wood properties CORRELATION nondestructive methods 

分 类 号：S781[农业科学—木材科学与技术] S792.39[农业科学—林学]