双子叶植物

• Some 60 of monocotyledons and 40 of dicotyledons are polyploid , as are 90 of ferns , many bryophytes , and some algae
  60的单子叶植物和40的双子叶植物、 90的蕨类植物、多数苔藓植物以及某些藻类，都是多倍体。
• Salicaceae a family of dicotyledonous trees , shrubs , and creeping forms including the willows ( salix ) and poplars ( populus )
  杨柳科：双子叶植物。杨柳科植物形态多样，有乔木，灌木及蔓生种类。包括柳树（柳属）和杨树（杨属）等。
• Agrobacterium a genus of soil bacteria , the species a . tumefaciens being the causative agent of crown gall , a type of tumor in plants
  根癌农杆菌：土壤中存在的一种农杆菌，可以感染双子叶植物的受伤组织诱发一种植物的肿瘤冠瘿瘤。
• Angiosperms are divided into two major classes , the monocotyledons ( monocotyledonae ) and dicotyledons ( dicotyledonae ) , with a small basal group known as primitive dicotyledons
  被子植物可以划分为两个纲，单子叶植物纲和双子叶植物纲。
• The minor veins join with other minor veins , forming a conspicuous network . the reticulate pattern of minor veins is characteristic of most dicotyledonous plants
  细脉和其它的细脉联合形成一个连续的网络。细脉的网状式样是双子叶植物的主要特征。
• Monocotyledons and dicotyledons are so termed because they normally conatin one and two cotyledons respectively although there are exceptions
  尽管有例外的情况出现，我们通常还是根据子叶的数目为一片还是两片而把植物分成单子叶植物和双子叶植物。
• Since the plasmid is capable of independent replication in host cells of many dicotyledonous plants , it has been used as a cloning vector in gnetic engineering
  在许多双子叶植物中质粒在寄主细胞中是独立的复制单元，所以可以在基因工程中用作克隆载体。
• Ranunculaceae a highly variable family of about 2450 species of dicotyledonous plants that includes the buttercups , monkshood , anemones , clematis , delphiniums , and hellebores
  毛茛科：双子叶植物中高度变异的一个科，约有2450个种，包括毛茛，乌头，银莲花，铁线莲，飞燕草和藜芦等。
• The upstream region - 419 - 90 of promoter camv35s was repeated 2 times manually , and then became enhancer e12which can improve promoting efficiency of promoter camvsss to 70 folds
  增强子e12是将camv35s启动子上游- 419 - 90区域重复2次所构成的序列，该序列可使camv35s启动子在双子叶植物中的启动效率提高70倍。
• Cactaceae ( cacti ) a large family of succulent xerophytic dicotyledonous plants , found mainly in warm dry parts of the americas ; some species , notably the prickly pears ( opuntia ) , have been introduced to the mediterranean and australia
  仙人掌科：一类肉质的旱生双子叶植物，主要分布于美洲的炎热干燥的区域，仙人掌果（仙人掌属）被引入地中海以及澳大利亚。