林业工程学报2025，Vol.10Issue(2)：42-50,9.DOI:10.13360/j.issn.2096-1359.202311021
杨树6个"无絮"无性系木材主要解剖特征变异规律分析
Study on the variational patterns of main anatomical characteristics of six"catkin-free"clones of poplar trees
摘要
Abstract
Taking six male poplar clones without floc as the research object,the longitudinal and radial variation patterns of their wood anatomical characteristics were analyzed,thereby providing a theoretical basis for screening excellent poplar clones.By collecting six clones of poplar wood from seven-year-old Populus deltoides'Lulin 9',P.deltoides'Jianghuai No.1',P.deltoides'Nanyang',P.deltoides'Zhonghe 1',P.deltoides'Zhongjia 2'and P.deltoides'Xianglin 90'from Taihe County Forest Farm in Anhui Province,China,the variation patterns of fiber length,fiber width,fiber aspect ratio and double wall thickness of different poplar clones were analyzed.The results showed that the average ranges of fiber length,fiber width,fiber aspect ratio and double wall thickness of the six poplar clones were respectively 863.01-939.94,21.00-22.28,41.86-46.01 and 5.80-8.18 μm.The fiber length of the six poplar clones ranged from 863.01-939.94 μm,which belonged to the intermediate length.The fiber length and fiber aspect ratio of P.deltoides'Jianghuai No.1'were significantly higher than other cloned poplar trees at the 0.05 level.The fiber width of P.deltoides'Xianglin 90'Poplar was significantly higher than other cloned poplar trees at the 0.05 level.For the P.deltoides'Zhonghe 1',the double-wall thickness of poplar trees was significantly higher than that of other cloned poplar trees at the 0.05 level.The anatomical characteristics of poplar clones varied greatly in the longitudinal direction of the trunk.The anatomical characteristics of clones differed significantly at different heights in the longitudinal direction.Radially from the pith outward,the fiber length,fiber width and fiber aspect ratio of each clone increased significantly with the increase of annual rings,and the microfibril angle increased.As the annual rings increased,the overall decrease gradually decreased,but the difference was not significant.The double-wall thickness changed with the increase of annual rings,and the difference between the annual rings in the radial direction of the same clone was different except for P.deltoides'Lulin 9'.Except for P.deltoides'Jianghuai No.1',the differences were significant at the 0.01 level.Comprehensive analysis of various anatomical characteristic indicators showed that the P.deltoides'Jianghuai No.1'was suitable for pulp and paper material.关键词
杨木/纤维长宽度/长宽比/双壁厚/变异规律Key words
poplar wood/fiber length and width/aspect ratio/double wall thickness/variation law分类
林学引用本文复制引用
刘扬光,刘俊龙,苗婷婷,丁昌俊,秦生磊,石鑫,余敏,刘盛全..杨树6个"无絮"无性系木材主要解剖特征变异规律分析[J].林业工程学报,2025,10(2):42-50,9.基金项目
安徽省高校协同创新项目(GXXT-2021-053) （GXXT-2021-053）
安徽省科技项目重大专项(202003b06020010). （202003b06020010）
