文献类型：期刊文献

中文题名：依据生长和材性性状的灰楸无性系选择

英文题名：Evaluation Selection of Catalpa fargesii Clone Traits on Growth and Timber Traits

作者：赵秋玲[1] 麻文俊[2] 郭小龙[1] 王大伟[1]

第一作者：赵秋玲

机构：[1]甘肃省小陇山林业科学研究所,天水741022;[2]中国林业科学研究院林业研究所

年份：2023

卷号：51

期号：2

起止页码：13-18

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

基金：中央公益性科研院所基本科研业务费专项(CAFYBB2020SZ00);甘肃省林业和草原科技计划项目。

语种：中文

中文关键词：灰楸;生长性状;材性性状;选择

外文关键词：Catalpa fargesii;Growth traits;Timber traits;Selection

分类号：S718.4

摘要：为解析灰楸无性系生长和材性的遗传变异规律及其遗传和表型的相关关系,提高灰楸综合遗传改良效率,在甘肃省小陇山林科所灰楸种质资源库,以200个13年生灰楸无性系为材料,测量了树高、胸径、冠幅、活枝下高,并用Pilodyn和活立木力学性质测定仪测定了P值和波速,计算了材积和弹性模量。基于生长性状和材质性状主成分分析和布雷金多性状综合评定法,进行优良无性系选择。结果显示:除活枝下高和冠幅外,其余3个生长性状(树高、胸径、材积)和材质性状无性系间具有显著差异(P<0.05),其表型性状变异系数的变幅在6.2%~51.9%,无性系间存在着丰富的遗传变异,无性系水平选择潜力巨大。不同无性系生长和材质性状的重复力>0.6,其中高、胸径、材积、波速和弹性模量的重复力>0.8,属于高重复力。且不同性状间具有显著(P<0.05)或极显著(P<0.01)相关关系。根据主成分分析法和布雷金多性状综合评定法筛选出生长和材质性状均优良的灰07072、灰07080、灰07091等15个无性系,入选无性系树高、胸径、冠幅、枝下高、材积,波速、Pilodyn值和弹性模量的增益分别在18.95%、28.21%、1.45%、32.13%、74.14%、4.81%、0.72%和8.24%以上。入选无性系既满足了市场对灰楸优良无性系的部分需求,也为灰楸进一步遗传改良提供基础材料和数据支撑。
For resolution law of genetic variation of Catalpa fargesii clone traits the growth and wood properties and correlation between genetics and phenotypes, and improving the efficiency of comprehensive genetic improvement, 200 13-a Catalpa fargesii asexual lines were used as material in the C. fargesii germplasm repository in Xiaolongshan Forestry Institute, Gansu Province, where tree height, DBH, crown size and height under live branches were measured, and P -value and wave velocity were determined by Pilodyn and live wood mechanical properties meter, and wood volume and elastic modulus were calculated. The data were analyzed by ANOVA and principal component analysis. By the analysis of the principal components of growth traits and wood traits and the comprehensive evaluation of multiple traits of Bregin, the selection of fine clones was carried out, and the results showed that, except for height under live branch and crown size, there were significant differences ( P <0.05) among the clone for the three growth traits (height, DBH and volume of wood) and timber traits, and the coefficients of variation for the phenotypic traits ranged in 6.2%-51.9%. The repeatability of growth and timber traits in different clone was >0.6, and the repeatability of height, DBH, wood volume, wave velocity and elastic modulus was >0.8, which belonged to high repeatability. There was a significant ( P <0.05) or extremely significant ( P <0.01) correlation between different clone of traits. According to the principal component analysis and the comprehensive evaluation method of Bregin, 15 clones with excellent growth and wood properties were selected, including Ash07072, Ash07080 and Ash07091 and so on. The genetic gains of height, DBH, crown size, height under live branches, wood volume, wave velocity, Pilodyn value and elastic modulus of selected clones were above 18.95%, 28.21%, 1.45%, 32.13%, 74.14%, 4.81%, 0.72% and 8.24%, respectively. The selected clones not only meet the market partial demand for the excellent clones of C. fargesii , but also provide basic materials and data support for further genetic improvement of C. fargesii .