Variance analysis showed that the fiber and xylem ray proportion among populations were insignificant, but the vessel-elements proportion varied greatly.
方差分析表明，种群间导管比量差异显著，木射线比量和纤维比量差异不显著。
The characters of stem transections are the differences on the size and rang of the phloem cells, the inclusions in xylem ray cells are only found from Taxus yunnanensis.
枝横切面特征中韧皮部细胞形状和排列松紧不一，木射线细胞中内含物仅云南红豆杉有。
It is a lateral meristem and contains fusiform initials giving rise to secondary xylem and phloem and ray initials giving rise to medullary rays. See also secondary growth.
维管形成层属于侧生分生组织，包括能够产生次生木质部与次生韧皮部的纺锤状形成层原始细胞和产生髓射线的射线原始细胞。
应用推荐