Primary xylem xylem derived from the procambium in the young plant.
初生木质部：指幼嫩植物中来源于原形成层的木质部。
Primary phloem PHLOEM derived from the procambium in the young plant.
初生韧皮部：指幼嫩植物中来源于原形成层的韧皮部。
Protoxylem the PRIMARY xylem elements that are formed from the procambium first.
初生木质部的成分，最早由原形成层形成。
Procambium (procambium strand) The layer of cells that gives rise to the vascular tissue.
原形成层（原形成层束）：形成维管组织的一层细胞。
Study of the Transition from Procambium to Vascular cambium in Erythrina Arborescens Roxb.
原形成层向维管形成层转化的研究。
Cells of the procambium and ground meristem are more vacuolated than those of the protoderm.
原形成层和基本分生组织的细胞比原表皮层细胞更加液泡化。
Primary vascular tissue, which is found in all vascular plants, is formed from the procambium.
初生维管组织由原形成层发育而来，在所有维管植物中都有存在。
The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem.
中柱包括从原形成层衍生而来的全部初生组织，由中柱鞘、韧质部和木质部组成。
The stele includes all primary tissues derived from the procambium consists of pericycle, phloem and xylem .
中柱包括从原形成层衍生而来的全部初生组织，由中柱鞘、韧质部和木质部组成。
The differentiation of the cells derived from the primordial meristem formed protoderm, ground meristem and procambium strand.
其衍生细胞分化为原表皮、基本分生组织和原形成层。
The procambium continuously develop to the apex after it arises from the place where the leaf primordia originates from below the apical meristem.
原形成层在顶端分生组织之下叶原基起源的地方发生。
Leaf buttress a leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.
顶端分生组织上的侧生突起发育成叶的原基，与原形成层有关。
Leaf buttress a leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.
顶端分生组织上的侧生突起发育成叶的原基，与原形成层有关。
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