Xylem
英音[ ˈzaɪləm ] 美音[ ˈzaɪləm ]

[植] 木质部

常用释义

词性释义

n.

[植] 木质部
例句
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Heartwood(duramen) The hard central region of a tree trunk made up of xylem vessels that are no longer involved in water transport.
是位于树干中部的硬质区域,由已不涉及水分传输的木质部导管构成。
程序,木质部压力潜力可以通过削减源于植物和安置它测量在取样压力计用具。
叶脉中厚壁组织发达,木质部外纤维数量众多,在气腔周围有单宁结晶分布。
此外,木质部压力探针技术是目前唯一可以直接测定导管或管胞中负压的工具。
According above, diagram of a hypothetical pathway during secondary xylem differentiation was raised.
进而由这些结果提出了木质部细胞分化机理的大致模型。
这样的加厚允许木质部在环间沿展,当周围组织生长时,不会破裂。
The distribution of As in the pinna showed that As had great abilities to be transported in xylem vessels and from xylem to mesophyll.
的分布情况如羽片显示,有很大的能力,在木质部运输船只和木质部,以叶肉。
The early formed secondary xylem was characterized by a large number of wood fiber cells with non woody cell wall.
早期生成的次生木质部以细胞壁尚未木质化的木纤维细胞数量居多为特征。
在老茎中,仅最新的木质部环参与物质的运输。这些木质部环组成边材。
The xylem sap of bottle gourd No. 3 as rootstock was the best one to promote grafting seedling of cucumber to grow significantly.
华瓠杂3号做砧木的嫁接苗伤流液对黄瓜苗的生长有明显的促进作用;
A system confined to the transport of mineral elements is known as the xylem.
专门用来运输矿物元素的系统称为木质部。
Actinostele A type of protostele in which the xylem is star shaped and the phloem lies between the points of the star.
原生中柱的一种类型。木质部是星形的,韧皮部位于星形之间。
Where they occur interspersed with the xylem they may be distinguished from tracheids by their narrower lumen.
纤维分布与木质部相似,其狭窄的腔可与管胞区分开来。更详细。
Summertime bud grafting can be cut take shoot piece, or take xylem shoot less piece, in stock bine dry place decorticates.
夏季芽接可削取芽片,或少带木质部芽片,在砧木茎干处剥皮。
草本是指具有木质部不甚发达的草质或肉质的茎,而其地上部分大都于当年枯萎的植物体。
The vessel elements of secondary xylem in Averrhoa carambola are observed by bio-microscope image analysis system and micrography .
运用细胞图象分析系统和显微照相的方法对阳桃次生木质部导管分子进行了观察研究。
The xylem of the root is tetrarch, lateral root initiate the in metaxylem radiating angle opposite to pericycle cell.
根木质部为四原型,侧根发生于木质部放射角所对的中柱鞘细胞;
Shoot-applied 45Ca was rapidly translocated to all leaves of excised shoots through the xylem transpiration stream.
施用于切断枝条之断端之钙-45迅速的经过导管之蒸散流运移至枝条上所有的叶片。
在胡萝卜根,薄壁细胞在维管组织中占主导地位,次生韧皮部比次生木质部更发达。
The study of the stem's secondary xylem of Rhus chinensis Mill reveals that perforation plate is simple perforation plate.
对盐肤木茎进行木材解剖学研究,发现其导管分子穿孔板为单穿孔板。
次生木质部导管分子观察研究。
The broad-leaved wood is mainly composed of vessel, wood fiber, axial parenchyma and xylem ray. The structure is complicated.
阔叶树材主要由导管、木纤维、轴向薄壁组织、木射线等组成,构造较复杂。
Tannin, phenol and flavone contents in the xylem showed no significant correlation with the damaged trees rate.
木质部中的单宁、黄酮及总酚含量与被害株率也不存在相关关系。
On the evolution of secondary xylem and its significance in plant phylogeny.
次生木质部的进化与植物系统发育的关系。
Bicollateral bundle The arrangement of tissues in the vascular bundles in which the phloem is situated on both sides of the xylem.
是初生木质部的内,外方都有初生韧皮部分布的一种维管束排列方式。
位于树皮下的树和灌木的次木质部,主要由纤维质和木质构成
Result The active component content in phloem was the highest, while, successively, in pith and in xylem.
结果大黄中的活性成分含量以韧皮部最高,髓部次之,木质部最低。
韧皮部,而不是木质部,是供应商的水花卉和其他一些器官。
The positive xylem pressure, often occurs with low transpiration rate, is termed as root pressure.
在植物弱蒸腾情况下,木质部的水分处于正压状态,这种压力叫根压。
木质部和韧皮部在植物体内构成一个连续的分支系统。更详细。