接骨木茎的木材解剖学研究

The Wood Anatomy Study on Stem of Sambucus williamsii

接骨木(Sambucuswilliamsii)茎次生木质部由导管分子、分隔木纤维、纤维管胞及维管管胞等组成。其为环孔材。射线属异形 射线。导管分子的穿孔板为单穿孔板,根据穿孔板的位置、数量,导管分子具有5种形态,即:一端只有1个单穿孔板,另一端为螺纹增厚;一端具2个单穿孔板,另一端为螺纹增厚;两端各具1个单穿孔板,且侧壁具螺纹增厚;两端各具1个单穿孔板,且侧壁具孔纹增厚;具3个单穿孔板的导管分子,其中2个穿孔位于一端,1个穿孔位于另一端,具孔纹增厚。

The study on the stem seconday xylem of Sambucus williamsii, reveals there are vassel elements, fibretracheid, septate fibres and wood fibre in it. The wood belongs to ring porous wood. The ray is hetergeneous rayⅡ.The perforation plate is simple perforation. There are 5 types vassel elements with different location and number of simple perforation on vassel element wall: only one end has a simple perforation plate and the other end has helical thickening; only one end has two simple perforations plates and the other end has helical thickening; each end has a simple type, with helical thickening on the wall; each end has a simple type, with reticular thickening on the wall ;there are 3 simple perforation plates,and one end has two simple types and the other end has one simple type, with reticular thickening.