角果木和白骨壤次生木质部的生态解剖

Ecological anatomy of secondary xylem of Ceriops tagal and Avicennia marina

对红树科 Ｒｈｉｚｏｐｈｏｒａｃｅａｅ的角果木（Ｃｅｒｉｏｐｓ ｔａｇａｌ）和马鞭草科Ｖｅｒｂｅｎａｃｅａｅ的白骨壤（Ａｖｉｃｅｎｎｉａ ｍａｒｉｎａ）次生木质部的组织结构和数量特征进行了研究；并研究了角果木的应拉木（ｔｅｎｓｉｏｎ ｗｏｏｄ）与普通木的纤维分子的变化，还探讨了角果木和白骨壤的木材结构与环境关系。红树植物导管数量多、管孔小、机械组织为韧型纤维，薄壁组织次生加厚明显是适应环境的特征。

This paper deals with the morphological and quantitative characters of secondary xylem of Ceriops tagal and Avicennia manna. The changes of libriform fibres of tension wood and normal wood of Ceriops tagal and the relation between the structure of wood and the environmental influences have also been studied. Many vessel numbers, small pore, libriform fibres (mechanical tissue)and obvious secondary thickening of xylem tissue are the features of adaptation to the environment.