几个星期之后，取出初生茎上的花芽，并使全部的初生茎水平弯曲。
After some weeks, the flower bud of the primary shoot is removed and the entire primary shoot bent down horizontally.
茎的初生结构中多个维管束排列成环状，节部为单隙三迹，叶迹分别来自于3条维管束或同一条维管束。
The vascular bundles of the primary structure in stem are ring arranged, and the node is unilacunar and 3-traced, which is from three vascular bundles or one vascular bundle.
下胚轴大部分区段同时具有根、茎初生结构的特征。
Most portion of hypocotyl has the characteristic of the primary structures of its root and stem.
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