... 原维管束带 provascular strand 前形成层;原始形成层 provascular tissue;procambium 种源地 provenance ...
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N undifferentiated plant tissue, just behind the growing tip in stems and roots, that develops into conducting tissues 前形成层
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。
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。
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。
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