| 1. | It has leaf primordia and a shoot apex .
它有叶原基和一个苗端。 |
| 2. | Minute fragments of shoot apices are proverbially difficult to culture .
微小的茎尖切段通常是难以培养的。 |
| 3. | The entire shoot apex of a horsetail could fit into the large apical cell in the growing tip of a fern .
木贼的整个茎尖可相当于蕨类生长锥中大的顶端细胞。 |
| 4. | Wardlaw reproduced to the same scale photographs of the vegetative shoot apex of many primitive and advanced land plants .
沃德劳以同样的放大倍数复制了许多原始的和进化的陆生植物营养茎尖的照片。 |
| 5. | However , the effects on nicotine production caused by leaf wounding were smaller than that caused by removing the shoot apex
但叶面损伤对烟株体内烟碱合成的影响小于打顶处理。 |
| 6. | Morphology and cytohistological zonation appeared different between cone apex and the vegetative shoot apex
雌球果原基与营养茎端在外部形态及内部细胞组织学分区结构有明显差异。 |
| 7. | The results showed that removal of the shoot apex resulted in significant increase in nicotine concentration in different organs and whole tobacco plants
结果表明，切除顶芽导致烟株体内烟碱浓度和含量显著增加。 |
| 8. | 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
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。 |
| 9. | The changes of protein content in shoot apices and leaves was not obvious after seedling cold - treatment . but germinating seeds displayed ris
幼苗低温处理后也产生了两种58kd和3ikd的特异蛋白质，消失了两种57kd和54kd左右的蛋白质。 |
| 10. | 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
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。 |
