广西林业科学2025，Vol.54Issue(1)：13-19,7.DOI:10.19692/j.issn.1006-1126.20250102
杂交鹅掌楸无性系生长与木材材性分析
Analysis on Growths and Wood Properties of Liriodendron Hybrids Clones
摘要
Abstract
In order to grasp variation levels of growth traits and wood properties of Liriodendron Hybrids clones,and provide references for improved variety breeding,ten Liriodendron Hybrids clones with straight trunks and large growths were used as experimental materials.Their growth traits and wood properties were measured and analyzed,and selection of improved clones was carried out.Results showed that tree heights of ten Liriodendron Hybrids clones were 8.70-14.80 m,DBHs were 9.10-15.80 cm,individual volumes were 0.029-0.135 m3,wood basic densities were 0.325-0.573 g/cm3,wood fiber lengths were 1 211.33-2 125.22 μm,wood fiber widths were 21.51-35.97 μm,wood fiber length-width ratios were 46.33-67.57,wood lignin contents were 19.55%-24.18%,wood cellulose contents were 45.08%-56.08%,and wood hemicellulose contents were 17.69%-22.38% .Phenotypic variation coefficients of various traits were 5.94%-45.21% .Differences of various traits among clones were extremely significant.Except for wood fiber length-width ratio,there were significant or extremely significant correlations among other traits.There were abundant genetic variations and greater breeding potentials among Liriodendron Hybrids clones.Through comprehensive evaluation of multiple traits,five improved clones(2-3-0,23,Xiang17,7 and 29)were selected.Compared with means of ten clones,opti-mal average tree height,average DBH,wood average basic density and wood average fiber length-width ratio of selected clones were higher by 27.1%,21.6%,22.7% and 16.6% respectively,which could be used as materials for improved variety breeding in the future.关键词
生长性状/木材材性/遗传变异/选择/杂交鹅掌楸无性系Key words
growth trait/wood property/genetic variation/selection/Liriodendron Hybrids clone分类
农业科技引用本文复制引用
胡萍,杨爱红,胡淼,吴敬芳,余小玲,余发新..杂交鹅掌楸无性系生长与木材材性分析[J].广西林业科学,2025,54(1):13-19,7.基金项目
江西省重点研发项目(20203BBF63025) （20203BBF63025）
国家自然科学基金项目(32060312) （32060312）
江西省科学院重点研发项目(2021YSBG22025) （2021YSBG22025）
中央财政林业科技推广项目(JXTG[2022]01) （JXTG[2022]01）
