林业与生态科学2025，Vol.40Issue(1)：8-17,10.DOI:10.13320/j.cnki.hjfor.2025.0002
107杨次生木质部主要解剖结构与其渗透性关系研究
Relationship between secondary xylem anatomical structure and its main permeability of Populus × euramericana cv."74/76"
摘要
Abstract
To study the relationship between the main anatomical structure and permeability of secondary xylem of Populus × euramericana cv."74/76",the 10-year-old populus was taken as the research object to analyze the anatomical structure changes of secondary xylem at different cambial age in radial direction,such as vessel diameter,vessel density,wood fi-ber diameter and proportion ratio,and the longitudinal permeability of secondary xylem in radial direction of air,water,silica sol and other fluids were measured.The results showed that:(1)In the radial direction,the changes of radial diameter and tangential diameter of vessel,vessel density,proportion of vessel and wood rays increased first and then decreased with the permeability of air in the secondary xylem,reaching the maximum value at the fourth cambial age;The permeability of water and silica sol in secondary xylem decreased with the change of wood fiber diameter from the third cambial age,and the anatomic charac-teristics were significantly correlated with the permeability.(2)The main anatomical struc-ture changes in secondary xylem were most correlated with the fluid permeability variables as follows:wood fiber tangential diameter and air permeability,vessel density and water per-meability,wood fiber tangential diameter change and silica sol permeability;(3)With the in-crease of cambial age,the number of perforated plates gradually decreased,and the opening degree and number of pits gradually decreased;(4)The main permeable paths of secondary xylem were vessel and pitting.关键词
107杨/次生木质部/渗透性/解剖结构Key words
Populus × euramericana cv."74/76"/secondary xylem/permeability/anatomical structure分类
农业科技引用本文复制引用
郭梦杰,刘智,吕瑶..107杨次生木质部主要解剖结构与其渗透性关系研究[J].林业与生态科学,2025,40(1):8-17,10.基金项目
河北省自然科学基金(C2020204074) （C2020204074）
河北农业大学自主培养人才科研专项(PY201811). （PY201811）
