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芦苇营养苗端在发育过程中始终保持原套原体结构，原套由两层细胞组成。叶原基发生的最初标志是对原基发生位点的两层原套细胞首先进行平周分裂．叶舌发生始于苗端倒数第１０间隔期幼对内侧，由幼叶原表皮细胞及其内侧的基本分生组织细胞共同发育而来。最初的腋芽原基发生于苗端倒数第３间隔期幼叶叶腋内．发生早期出现壳状区结构．壳状区原分生组织表面两层细胞由两层原套细胞衍生而来，不仅能进行垂周分裂，还能进行平周分裂。休眠前夕，芦苇营养苗端的原始细胞区还可通过ＰＡＳ加铁矾苏木精染色显示出来．芦苇营养苗端的淀粉消长规律与其分区结构以及苗端的器官发生均有密切的相关性．越冬前夕，芦苇冬芽生长锥、幼叶中所积累的大量淀粉粒及幼叶中所积累的油滴均有助于增强冬芽的抗寒性．
Phragmites australia seedlings in the development process has always maintained the original set of protozoan structure, the original set of two layers of cells. The primordial sign of leaf primordia was the first peritrophic cleavage of two layers of mantle cells at the primordium site. Liguel began to occur at the end of the penultimate interval between the young end of the seedlings, from the young primordial epidermal cells and the medial meristem cells derived from the common development. The initial axillary bud primordium occurred at the penultimate leaflet end of the leaflet within the axillary. Occurrence of early shell-shaped structure. Shell-shaped meristem on the surface of the two layers of cells derived from the two layers of the original sets of cells derived from not only for the vertical division, but also for the week week division. On the eve of dormancy, the primary cytoplasmic zone at the vegetative shoot tip of P. reesei can also be visualized by PAS plus ferrosamine hematoxylin staining. The rule of starch growth and decline at the tip of vegetative shoots was closely related to the zoning structure and organ development at the shoot tip. On the eve of winter, the cone growth of winter reed, the accumulation of a large number of young leaves and young leaves accumulated in the oil droplets are helpful to enhance winter cold hardiness.