文献类型：期刊文献

英文题名：Genetic parameters for growth and wood mechanical properties in Eucalyptus cloeziana F. Muell.

作者：Li, Changrong[1,2,3] Weng, Qijie[2] Chen, Jian-Bo[3] Li, Mei[2] Zhou, Changpin[2] Chen, Shengkan[2] Zhou, Wei[3] Guo, Dongqiang[3] Lu, Cuixiang[3] Chen, Jian-Cheng[4] Xiang, Dongyun[3] Gan, Siming[1,2]

第一作者：Li, Changrong

通信作者：Gan, Siming

机构：[1] State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Xiangshan Road, Beijing, 100091, China; [2] Key Laboratory of State Forestry Administration on Tropical Forestry, Research Institute of Tropical Forestry, Chinese Academy of Forestry, 682 Guangshan 1 Road, Guangzhou, 510520, China; [3] Key Laboratory of State Forestry Administration on Central South Fast-growing Timber Cultivation and Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002, China; [4] Yulin Forestry Research Institute, Guihe, Rongxi Town, Rongxian, 537501, China

年份：2017

卷号：48

期号：1

起止页码：33-49

外文期刊名：New Forests

收录：EI(收录号：20163602779053);Scopus(收录号：2-s2.0-84984823791)

语种：英文

外文关键词：Grain growth - Compressive strength - Forestry

摘要：Genetic parameters for wood mechanical properties and their correlations with growth traits are not well established in the important tree genus Eucalyptus L’Hér. Based on a progeny trial of 115 open-pollinated families of Eucalyptus cloeziana F. Muell., this study estimated the heritability and trait–trait correlations for growth, including height (H), diameter at breast height (D) and volume (V), and wood mechanical traits, including basic density (BD), green density (GD), modulus of elasticity (MOE), modulus of rupture (MOR) and parallel-to-grain compressive strength (σc). Narrow-sense heritability (hi2) ranged from 0.04 to 0.35 for growth across ages 0.5–9.5?years and from 0.06 to 0.24 for wood mechanical properties at age 9.5, indicating low to moderate magnitude of additive genetic control of these traits. Phenotypic (rp) and additive genetic (rg) correlations at the final age of 9.5?years were consistently significantly positive between growth traits and mostly significantly positive between wood mechanical traits, while rp and rg were small and adversely significant, respectively, between the two types of traits, posing a challenge for concomitant improvement of growth and wood traits. In addition, rp and rg coefficients between age 9.5 and earlier years for each of the growth traits H, D and V were all positively significant (except for H2.5) and had a generally increasing trend with age, suggesting the possibility of early selection. ? 2016, Springer Science+Business Media Dordrecht.