高地钩叶藤节间与节部纤维形态特征及组织比量变异分析

为更好地了解棕榈藤材性能、提高我国棕榈藤材高附加值和加工利用水平，选择高地钩叶藤为对象，采用显微图像分析系统，对该藤2 m处的节间和节部的纤维形态特征及组织比量进行了统计与分析。结果表明，节间与节部纤维的长度、宽度、腔径、双壁厚、长宽比、径腔比、壁腔比的平均值分别为2 154.50 μm和1 573.22 μm、17.34 μm和18.11 μm、1.48 μm和5.33 μm、6.98 μm和7.78 μm、124.51和86.69、2.30和2.48、2.33和2.59；节间和节部的纤维、筛管、导管、薄壁细胞组织比量的平均值分别为8.89%和10.77%、4.50%和4.78%、12.09%和12.67%、74.52%和71.81%。经F检验，节间与节部的纤维长度、双壁厚、长宽比、壁腔比在显著性水平0.01下差异极显著，而纤维径腔比在0.05水平上差异显著，节间的纤维形态特征优于节部。

Variation Analysis of Fiber Morphological Characteristics and Tissue Proportion of Plectocomia himalayana Between Internode and Node

In order to understand the performance of rattan materials,to improve the high value-added and levels of processing & utilization for Chinese rattan resources,Plectocomia himalayana was chosen as the research object in this paper.The fiber morphological characteristics and tissue proportion of internode and node at 2 m were analyzed by using microscopic image analysis system.The average fiber length,width,lumen diameter,double wall thickness,length-width ratio,width-lumen ratio and double wall-lumen ratio of internode & node were 2 154.50&1 573.22 μm,17.34&18.11 μm,1.48&5.33 μm,6.98&7.78 μm,124.51&86.69,2.30&2.48,2.33&2.59,respectively.The fiber proportion,sieve tube proportion,vessel proportion,parenchyma proportion of internode&node were 8.89%&10.77%,4.50%&4.78%,12.09%&12.67%,74.52%&71.81%,respectively.The F-test at 0.01 level indicated that the fiber length,double wall thickness,length-width ratio and double wall-lumen ratio were significant different between internode and node.,and the fiber width-lumen ratio was different between internode and node.The fiber morphological characteristics of internodes was better than those of nodes.