初生木质部(primary xylem):初生木质部位于根的中央,由口径较小的环纹导管或螺纹导管组成,其紧接中柱鞘内侧的辐射角端较早分化幼稚,其主要功能是输导水...
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... primary water - (离子)近层水[在离子周围延 primary xylem - 原生木质部 primary meristem - 初生分生组织 ...
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primary y xylem 初生木质部
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。
At the upper and the middle part of hypocotyl, the pith appears, and the order of the primary xylem differentiation is endarch.
在下胚轴中、上部,髓部开始出现,初生木质部分化顺序为内始式;
The extending cotyledon traces differentiate directly from the parenchymatous cells which locate on the outside of the poles of primary xylem.
伸向子叶的子叶迹,直接由原生木质部极外面的一群薄壁组织细胞分化形成。
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