子叶节区—根过渡区极短。
在子叶节区下部存在原始的外始式二原型十字形单中柱。
The primitive exarch and diarch haplostele with cross-like metaxylem exists in the lower part of CNZ.
根据子叶节区理论和方法对胡萝卜幼苗初生维管系统进行了解剖学研究。
After making an anatomic study on the primary vascular system of their seedlings based on the theory and method of cotyledon node zone.
在子叶节区下部存在子叶节区—根过渡区；子叶节区上部存在子叶节区—茎连接区。
The lower part of its cotyledon node zone is cotyledon node zone-root transition region, and its upper part is cotyledon node zone-stem connection region.
其初生维管系统的解剖学研究表明：子叶节区明显长于毛茛科植物幼苗，属顶枝伸长型。
The anatomical structure of its primary vascular system was studied and its cotyledon node zone is longer than that of Ranonculaceae.
其初生维管系统的解剖学研究表明：子叶节区明显长于毛茛科植物幼苗，属顶枝伸长型。
The anatomical structure of its primary vascular system was studied and its cotyledon node zone is longer than that of Ranonculaceae.
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