自从泥盆纪以来就生存的低等维管植物。
维管植物的抗盐机理。
我对植物学的兴趣主要限于维管植物的生殖过程。
My botanical interest is largely confined to the reproductive processes in vascular plants.
当水畔出现最初的维管植物，充足的水源诱使其落户生根。
The first vascular plants took advantage of the abundant water, and put down roots.
初生维管组织由原形成层发育而来，在所有维管植物中都有存在。
Primary vascular tissue, which is found in all vascular plants, is formed from the procambium.
绒毡层：维管植物花粉囊内包围孢子母细胞的富含营养物质的一层结构。
Tapetum (pl. tapeta) A food-rich layer surrounding the spore mother cells in the anthers of vascular plants.
多领域的研究观点表明，维管植物最有可能通过鸟类的帮助而迁入南极。
The viewpoints from several fields of science indicated that the vascular plants were most probably migrated to Antarctica through bird aid.
河南省有丰富的野生植物资源，有维管植物181科，966属，3158种。
There exists 3158 wild species in 966 genera and 181 families of vascular plant in Henan Province.
采用群落调查方法，对潮查自然保护区维管植物科属的组成和植被类型进行分析。
By analyzing the community of vascular plants in Chaocha Nature Reserve, we studied the composition and vegetation types of this area.
在生物结皮的发育过程中，其与维管植物萌发和定居间的关系也存在几种不同的观点。
There are some different viewpoints on the development process of soil crusts, the relationship between biological soil crusts and the colonization and propagation of vascular plants.
苔藓植物作为许多生态系统的主要地被物，在维管植物天然更新过程中发挥着不容忽视的作用。
As the main ground cover of many ecosystems, bryophytes play an important role in the process of vascular plants' natural regeneration.
AM真菌是广泛存在于土壤生态系统中的一类有益微生物，能与90%以上的维管植物形成共生体。
AM fungi is a kind useful microorganism that distributes in the soil system extensively; it can form symbiosis with host plant above 90%.
长白山植物区系具有以下特征1）植物种类比较丰富，共计维管植物105科、336属、610种。
The characteristics about the flora of Changbaishan Mountain are as follows:1) It is rich in plants, containing 610 species, 336 genera, 105 families.
呼吸根：指由某种水生维管植物产生的特化的负向地性根(尤其如红树，如海桑属)，在土壤之上生长良好。
Pneumatophore aerophore; breathing root a specialized negatively geotropic root produced by certain aquatic vascular plants especially trees such as mangroves, e. g.
呼吸根：指由某种水生维管植物产生的特化的负向地性根（尤其如红树，如海桑属） ，在土壤之上生长良好。
Pneumatophore ( aerophore ; breathing root ) a specialized neg atively geotropic root produced by certain aquatic vascular plants ( especially trees such as man groves, e. g.
1984年间，在遵化县进行了野生植物资源调查，现知全县有自生维管植物531种，分隶于112科，340属。
The investigation (1982-1984) revealed that, in Zunhua county, there are 531 kinds of vascular plants which belong to 112 families and 340 genera.
生长素还能使植物形成维管系统，形成侧根，并产生乙烯。
Auxin also causes the plant to develop a vascular system, to form lateral roots, and to produce ethylene.
木本植物维管形成层外部的组织。
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.
它在基部与植物维管系统联成一体，在本质上是由植物侧根原基衍生而来。
The tree-shaped structure of nodular vascular framework is connected with the vascular system of plant in the base, It was derived originally from the plant lateral root primordium.
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。
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。
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.
应用推荐