There is a growing interest in improving wood properties through clonal selection. However, traditional methods for determining wood properties are difficult to implement at the scale required for large-scale selection programs. In this study, we used rapid phenotyping methods (i.e., drill resistance (DR) and stress wave velocity (SWV)) for assessing wood quality in a 3-year-old clonal trial containing 125 clonal poplar hybrids. These hybrids belong to interspecific crosses of Populus deltoides [D], P. trichocarpa [T], P. nigra [N], and P. maximowiczii [M]. We estimated clonal variation and correlations among DR, SWV, basic density (BD), and dynamic modulus of elasticity (MOE_d). Clonal repeatabilities were moderate for all traits, but were higher for BD and DR (i.e., R² = 0.45 and 0.46, respectively) than for SWV and MOE_d (i.e., R² = 0.30 and 0.35, respectively). Clonal mean phenotypic correlations were high between BD and DR (r_c = 0.84) and between SWV and MOE_d (0.87), and the clonal correlations (r_g) were 0.90 and 0.96, respectively. Overall, there was a weak relation between BD and MOE_d (r_c = 0.23 and r_g = 0.29, respectively). Results support the use of DR and SWV as tools for the selection of poplar clones oriented to improve solid wood properties.

通过克隆选择来改善木材特性的兴趣日益浓厚。然而，用于确定木材特性的传统方法难以在大规模选择计划所需的规模上实施。在这项研究中，我们使用了快速表型分析方法（即，抗钻性（DR）和应力波速度（SWV））在3年的，包含125个克隆杨树杂种的克隆试验中评估木材质量。这些杂种属于三角果杨[D] ，毛果杨[T] ，黑果杨[N]和最大值木森[M]的种间杂交。我们估计了DR，SWV，基本密度（BD）和动态弹性模量（MOE _d）之间的克隆变异和相关性）。克隆重复性是中等的所有特征，但对于BD和DR较高（即，- [R ²  = 0.45和0.46，分别地）比SWV和MOE _d（即，- [R ² 分别= 0.30和0.35，）。BD和DR之间的克隆平均表型相关性高（r _c  = 0.84），SWV和MOE _d之间的克隆平均表型相关性高（r 7 ）（r _g）分别为0.90和0.96。总体而言，BD与MOE _d之间的关系较弱（r _c  = 0.23和r _g  = 0.29）。结果支持将DR和SWV用作选择旨在改善实木特性的杨树无性系的工具。