日本金松茎皮层树脂道发育的研究

指出日本金松茎初生结构中树脂道存在于皮层中；成熟的树脂道由１层上皮细胞和２～３层鞘细胞包围着胞间道构成；树脂道来源于原形成层束外侧的基本分生组织细胞，以裂生方式形成胞间道，腔道的扩大主要依靠鞘细胞插入上皮细胞层和上皮细胞本身的切向延伸而形成，同时伴有上皮细胞的分裂。

The Development of the Conical Resin Ducts in the Stem of Sciadopitys Verticillata

in the primary structure of the stem of sciadopitys verticillate,the resin ducts only occur in the cortex,mature resin ducts are elongated structures throughout their length of epithelial cells surrounding an intercellular space.On the outer side of the epithelial cells there are two or three layered sheath cells with relatively thick walls. The conical resin ducts are found to derive from the ground meristematic cells, located in the outside of the procambium bundle and to form schizogenously.The further development of the lumen mainly depends on the insertion of sheath cells between the epithelial cells and periclinal elongation of the epithelial cells.