以下为句子列表：
英文: Effects of removal of the shoot apex and leaf wounding on nitrogen uptake and nicotine production were studied with tobacco plants grown in sand or hydroponic medium under the controlled conditions.
中文: 摘要采用砂培和营养液培养方法，研究了在营养生长阶段切除顶芽和叶片损伤对烟株生长、体内烟碱浓度、氮浓度及吸氮量的影响。
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英文: Removal of the shoot apex and leaf wounding did not show any influences on nitrogen uptake by plant, but increased nicotine production per unit nitrogen.
中文: 切除顶芽和叶面损伤对烟株体内的氮浓度及吸氮量均无显著影响，但显著提高了烟株体内单位氮素产生烟碱的能力。
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英文: The second leaf takes place at the basal part of the first leaf and originates from the shoot apex cells when the first leaf pierces the calyptra.
中文: 第一叶突出帽状体之后，由第一叶基部保留下来的茎干顶端细胞产生第二叶。
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英文: The vegetative shoot apex is thin and flat morphologically, and its cytohistological zonation pattern is an apical initial zone, a central mother cell zone, a cambium-like transitional zone, a peripheral zone, and a rib meristem, while cone apex is conifo
中文: 营养茎端外形扁平，内部顶端分生组织结构有顶端原始细胞区、中央母细胞区、形成层状过渡区、周围分生组织区及肋状分生组织区5个明显的分区；而雌球果原基外形呈圆锥状，内部结构只有套层和髓区。
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英文: CYTOHISTOLOGY OF THE POLYPLOID AND DIPLOID SHOOT APEX IN SOME FRUIT TREES
中文: 几种果树多倍体与二倍体梢端细胞组织学的研究
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