promeristem

常见例句

• Promeristem is composed ofthree layers of cells in root tip,of them,outer layer of cells form the epidermis and root cap,centraland inner layers of cells sepratedly form the cortex and vascular cylinder.
  其根端原分生组织具三层原始细胞，外层产生表皮和根冠，中层和内层分别产生皮层和中柱。
• Results Essential oil was not found in the promeristem of stem;
  结果在广藿香茎的原分生组织中，未观察到有挥发油分布；
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