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维管

网络vascular; Vascular tissues

维管

维管

vascular

...螺旋形状出现于许多非风媒传粉的植物后裔，它被看作是维管（vascular）植物的特征之一，松柏目植物（conifer）在整体上 …

Vascular tissues

植物生理学幻灯片_植物生理学_ppt... ... 1.3.3 Meristem 分生组织 1.3.4 Vascular tissues 维管 1.3.4.2 sieve elements 筛管 ...

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Objective : To explore the resources of vascular medicinal plants endemic in Hainan province with attempt to develop natural drugs .

目的：研究海南特有维管植物的药用资源，以开发海南天然药物。

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Thirdly, there was a close relationship between vascular plants and bryophytes .

维管植物发育程度与苔藓层发育关系密切；

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Lignin One of the main structural materials of vascular plants .

维管植物中的一种主要物质。

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There are about 700 interspecific hybrids among the British vascular plant flora of about 2500 native and alien sexual species .

在不列颠维管植物区系的 2500 个本地的和归化的有性种中，约有 700 个种间杂种。

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Thallus (pl. thalli ) A simple plant body showing no differentiation into root, leaf, and stem and lacking a true vascular system .

没有向根、茎和叶方向发生分化而且不具有真正的维管系统的简单植物体。

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Results show that the large parenchymatous cells of vascular bundles are the mainly storage site of aloin .

结果表明，叶维管柬内的大型薄壁细胞为芦荟素的主要贮存结构。

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However treatment with GA by itself promoted callus formation and inhibited new periderm, cambium and vascular tissues differentiation .

单独用 GA 可促进愈伤组织的形成，抑制新的周皮、形成层和维管组织的分化。

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Apical meristem The actively dividing cells constituting the growing point at the tip of the root or stem in vascular plants .

顶端分生组织：位于维管植物的根尖和茎端具有分裂能力的细胞。

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By analyzing the community of vascular plants in Chaocha Nature Reserve, we studied the composition and vegetation types of this area.

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。

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These bundles will become part of the vascular tissue of the stipels at the base of the individual leaflets .

这些维束管在各个小叶基部将成为托叶的维管组织部分。

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lower tracheophytes in existence since the Devonian .

自从泥盆纪以来就生存的低等维管植物。

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The first vascular plants took advantage of the abundant water, and put down roots .

最早的维管植物趁着水分充足之利向下扎根。

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In the stem , cortex was thick and meristematic tissue appeared activity , the vascular bundles increased and their aperture were very small.

茎中皮层明显加厚，分生原基活跃，维管孔径小而数目多；

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The primary vascular structure of a stem , including the vascular tissues and all tissues internal to the vascular tissues .

茎的初生维管结构，包括维管组织和维管组织以内的所有组织。

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Thickening straightly collenchyma was observed in rhizome. Vascular cambium was not obvious and secondary structure was not developed.

根茎有板状增厚的厚角组织，维管形成层不明显，次生结构不发达；

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Also , exploitation countermeasures of aquatic vascular plants were discussed .

此外，还对南四湖水生经济维管植物的开发提出了建议。

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In temperate regions vascular epiphytes are rare: here most epiphytes are lichens , mosses , liverworts, and algae .

温带几乎没有附生的维管植物，附生植物大多为地衣、藓类、苔类和藻类。

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The anatomical structure of its primary vascular system was studied and its cotyledon node zone is longer than that of Ranonculaceae.

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。

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The cambia of scion and stock merge, allowing the vascular tissues of the two plants to combine .

当接穗和砧木的形成层连接后，两种植物的维管组织便会结合。

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