The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous cells.
维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。
Bicollateral bundle the arrangement of tissues in the vascular bundles in which the phloem is situated on both sides of the xylem.
是初生木质部的内，外方都有初生韧皮部分布的一种维管束排列方式。
There are some sclerenchymatous cells outside the phloem of each vascular bundle to increase the supporting force of the petiole.
每个维管束的韧皮部外面有数层厚壁细胞，增加叶柄的机械支持作用。
The weight of a single sheath is correlated with the number of large vascular bundle and the area of vascular bundles, is correlated significantly with the area of phloem for vascular bundles.
单茎鞘重与大维管数、维管总面积相关显著，与韧皮部总面积相关极显著。
The abortion of companion cell of phloem of anther connective vascular bundle.
药隔维管束韧皮部的伴胞解体。
Histocytological observations on explants indicated that the callus was induced from cells of cortex, phloem and peripheral zone of vascular bundle.
细胞组织学研究表明，由外植体皮层细胞、韧皮部细胞及维管束周围细胞均可脱分化启动产生愈伤组织。
There were phloem fiber bundle of stem outside vascular bundles.
茎微管束外具韧皮纤维束；
There were phloem fiber bundle of stem outside vascular bundles.
茎微管束外具韧皮纤维束；
应用推荐