世界竹藤通讯2025，Vol.23Issue(5)：14-22,9.DOI:10.12168/sjzttx.2025.07.25.001
4种丛生竹维管束和纤维形态径向与轴向变化规律
Radial and Axial Variation Laws of Vascular Bundles and Fiber Morphology in Four Sympodial Bamboo Species
摘要
Abstract
The study uses the method of microscopic image analysis to investigate the vascular bundle and fiber morphology of four sympodial bamboo species in Yunnan(Dendrocalamus brandisii,D.giganteus,Gigantochloa nigrociliata,D.birmanicus),aiming to explore their variation laws along the axial and radial parts of bamboo culm and provide a basis for the high-value utilization of sympodial bamboo resources in there.The research finds that the axial shapes and sizes of vascular bundles in these four bamboo species gradually decrease with the increase of bamboo culm height,while the distribution density of vascular bundles and the proportion of fiber sheath tissue gradually increase.And the radial shape and size of the vascular bundles first increase and then decrease,while the density of the vascular bundles and the proportion of fiber sheath tissue gradually decrease,from outer layer to inner layer of bamboo culm.The significant differences in the morphological size and distribution density of vascular bundles in the radial part can be used to determine the boundary between the outer layer and the middle layer of bamboo culm.The average fiber lengths of the four bamboo species are all greater than 1 600 μm,the aspect ratios all greater than 100,the average wall thicknesses in the range of 6.89-9.94 μm,the average cavity diameters 2.9-4.03 μm,and the wall-cavity ratios all relatively large.The axial variation laws of fiber length,width and wall thickness vary among different bamboo species.Radially,the middle layer is larger than the outermost and innermost layers.关键词
丛生竹/维管束/纤维形态/竹材性能/云南Key words
sympodial bamboo/vascular bundle/fiber morphology/performance of bamboo culm/Yunnan province引用本文复制引用
张涛鹏,张双燕,王传贵,武恒,章瑞婷,武文萍..4种丛生竹维管束和纤维形态径向与轴向变化规律[J].世界竹藤通讯,2025,23(5):14-22,9.基金项目
国际竹藤组织试点成员国以竹代塑关键技术研究与示范项目(23-1396-2023091199) （23-1396-2023091199）
"十四五"国家重点研发计划课题"功能竹纤维复合材增值制造关键技术及示范"(2022YFD2200903-4). （2022YFD2200903-4）
