水青树科的木材解剖

WOOD ANATOMY OF TETRACENTRACEAE

本文对水青树科的木材结构进行了研究,并首次报道了扫描电镜下的观察结果。水青树科的木材生长轮明显,缺导管,由径向壁上具梯纹和圆形具缘纹孔的管胞组成,扫描电镜下发现还有少量纤维管胞和螺纹管胞。木薄壁细胞常成对散生。木射线为异刑Ⅰ和Ⅰ_A,多为单列。文章根据木材结构讨论了水青树科的系统分类地位。

This paper contributes the wood structure of Tetracentraceae. The anatomical features of this wood are described as follows: growth ring obvious,vessels absent. The greater part of the tissue formed of long tracheids with circular to scalariform pits on the radial walls. Some shorter and wider vascular tracheid also present but rare. Wood par enchyma diffued as small groups of 2-cell. Wood rays of heterogeneous type Ⅰ and Ⅱa, uniseriates numerous, the multiserlate 2-4 cell wide, composed of uprigth, square and procumbent cells. Systomic taxonomy was discussed based on the wood structure.