摘要
运用木材解剖图像分析系统和显微照相的方法对蒙古栎次生木质部的解剖结构进行观察分析。结果表明,蒙古栎的次生木质部由导管、环管管胞、木纤维、木射线及轴向薄壁细胞组成;蒙古栎在个体发育过程中,树根和树枝的管状分子明显较树干窄小,在分布规律和形态上,也有显著差异。对蒙古栎次生木质部离析发现,蒙古栎为单穿孔,管间纹孔式互列,导管分子类型多为两端具尾,长度大于宽度,这种现象表明蒙古栎在进化过程中是不同步的。
The anatomical structure of the secondary xylem of Quercus mongolica tree species was observed and analyzed by means of applying timber image analysis system and photomicrography observation method.The obser-vation showed that the secondary xylem of Q.mongolica was composed of duct,ring tube tracheid wood fiber,wood ray and axial parenchyma cells.In the ontogenetic process of Q.mongolica,the size of tubular molecules of roots and branches was significantly smaller than that of the trunk,and there were significant differences in the morpholo-gy and distribution of these molecules.The segregation of secondary xylem showed that Q.mongolica was single perforation,pitting tube between each row,majority of the ducts were in the form with a tail at both ends,and the length of the ducts was greater than the width.This phenomenon showed that the evolutionary process of Q.mon-golica was not synchronized.
出处
《西南林业大学学报（自然科学）》
CAS
2013年第6期76-79,111,共4页
Journal of Southwest Forestry University：Natural Sciences
基金
国家自然科学基金项目(31000265)资助
关键词
蒙古栎
解剖学特征
导管分子
Quercus mongolica
anatomic characteristics
vessel
