维管系统 meaning in English
vascular system
Examples
- Tracheophyte ( tracheophyta ) any plant with a differentiated vascular system ; i . e . all plants except the liverworts , mosses , and hornworts
维管植物：任何具有分化成为维管系统的植物。即除了地钱、藓类和角苔以外的所有植物。 - The process of vessel element ' s promotion , formation and connection in primary xylem of antirrhinum majus , a model plant , was observed through micropolariscope and bright - field microscope
利用偏光显微镜和明场显微镜，首次报道了模式植物金鱼草幼苗初生维管系统木质部导管分子的发育、形成和连接过程。 - Leaf gap ( lacuna ) a region of parenchyma differentiated in the stem vascular cylinder immediately above a diverging leaf trace . lateral connections insure no break in the vascular system
叶隙：叶迹从中柱分出的上方，初生维管柱上方出现的一些薄壁组织细胞，与茎的维管柱结构不同，它的侧向连接保证了茎叶维管系统的连续。 - The primary structures , the genesis and the structure formed of the primary vascular system and the structural change in the process of cotyledonary senescence of the seedlings of antirrhinum majus and other angiosperms were studied . the progress had been aquired in the aspects as follows
本论文对金鱼草等几种被子植物幼苗的初生结构、幼苗发育早期初生维管系统的发生和建成后初生维管系统的结构以及子叶衰老过程中的结构变化作了较为全面的研究，在以下几个方面取得了一定的进展： 1 - Our results provided direct evidence that pf40 gene play a role in the tissue development , with knockout this gene the lateral buds were not visible . the plant hormones auxin and cytokinin appear to play a major role in controlling this process , therefore , the concertrition of auxin and cytokinin was measured , however , the concentration of the two hormone was variation a little in transgenic plants , but the ratio of the two was more than 5 fold in the pf40 gained function plant than that in wild type . furthermore the pf40 gene effected differentiation of the vascular bundles in different transgenic plants , results showed the pf40 could change both xylary fibers and vessel
进一步的实验发现pf40基因会影响植物侧芽发育的早期，即pf40基因作用在侧芽形成与发育的早期。对转基因谷子的组织切片的分析还表明pf40基因引起不同形式的转基因谷子的维管组织的发育的差异，转化正义载体谷子的木质部变多，维管系统增多，而反义或干扰的转基因谷子的木质部数量变少，木质部分化异常。从转基因的结果可见pf40基因可以减弱植物的顶端优势，这种作用是通过改变植物体内激素的含量实现的。