运用EPMA和SEM分析技术对辉铜矿和蓝辉铜矿木质细胞体的细胞核、细胞壁和细胞之间的成分变化、多种环境下的木质细胞形状进行了研究,对形成机理作了探讨。
By employing EPMA and SEM techniques we examined the compositions of nucleus, cell-walls and cells of wood-cytoplasm in chalcocite and digenite and the shapes of wood cells.
栽培丹参根的周皮细胞层数少、色淡,韧皮部与木质部比值小,而野生丹参根的周皮细胞层数多、颜色重,韧皮部与木质部比值大。
In cultivated salvia miltiorrhiza roots light-colored periderm contained less layers of cells and low ratio of phloem to xylem compared with those in wild salvia rniltiorrhiza roots.
木材(次生木质部)是树木形成层细胞分化的产物,形成层的活动方式不仅影响木材的产量,而且影响木材的结构和性质。
Wood is the product of cambial activity in trees, and the seasonal activity style of cambium directly influences wood biomass production, structures and properties.
木质化足以使细胞变硬和增强。
This lignification serves to stiffen and strengthen the cells.
维管束由维管束鞘、木质部、韧皮部和大型薄壁细胞组成。
The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous cells.
初生木质部与初生韧皮部之间可见到2—3层排列规则或不规则的薄壁组织细胞,但是没有维管形成层的发生。
Between primary xylem and primary phloem there are 2-3 layers of parenchymatous cells, regularly or irregularly arranged, but no cambial zone can be recognized.
运用细胞图象分析系统及显微照相的方法对柚木次生木质部导管分子进行了观察研究。
The vessel elements of secondary xylem in Tectona grandis are observed and studied by cell image analysis system and micrography.
温室葡萄的新梢在PP 333喷施后,对其次生木质部导管细胞发育抑制作用的大小与PP 333浓度呈正比。
The inhibition of spraying PP333 on the new shoots of greenhouse grape to the development of secondary xylem cell correlated positively with the concentration of PP333.
伸向子叶的子叶迹,直接由原生木质部极外面的一群薄壁组织细胞分化形成。
The extending cotyledon traces differentiate directly from the parenchymatous cells which locate on the outside of the poles of primary xylem.
瘤组织中的薄壁细胞均增生肥大,木质部的垂直管胞发生变形且变短。
Parenchyma in gall tissues were observed to occur hypertrophy or hyperplasia, and vertical tracheids in gall xylem were short and abnormal in shape.
采后绿芦笋、豌豆苗叶绿素、可溶性糖含量均呈下降趋势,游离氨基酸、粗纤维、细胞壁多糖和木质素含量均呈上升趋势。
The chlorophyll and soluble sugar content of green asparagus and pea seedlings declined during storage period, and the contents of free amino acid, fiber, cell wall polysaccharides, lignin increased.
结果:根横切面上栓内层的石细胞环带和次生木质部导管的排列方式、初生木质部为四原型等为显微鉴别特征;
Results:The circular belt of sclereids in the phelloderm, secondary xylem vessel order of the transverse section, and tetrarch of the primary xylem were microscopic characters.
木质素一种复杂聚合物,是木头非碳水化合物的主要组成物,作用是凝聚纤维素并增强细胞壁的强度。
A complex polymer, the chief noncarbohydrate constituent of wood, that binds to cellulose fibers and hardens and strengthens the cell walls of plants.
结果表明,随着细胞次生壁的形成与木质化,细胞壁结构发生较大变化。
The results indicated that along with the formation and lignification of the secondary wall, great changes had taken place in the cell walls.
维管形成层属于侧生分生组织,包括能够产生次生木质部与次生韧皮部的纺锤状形成层原始细胞和产生髓射线的射线原始细胞。
It is a lateral meristem and contains fusiform initials giving rise to secondary xylem and phloem and ray initials giving rise to medullary rays. See also secondary growth.
与木质化过程的比较结果表明,POD参与了细胞壁的木质化过程,但次生壁中木质素的沉积位置并不与POD活性位置一一对应。
The present results indicated that POD had participated in the lignification. However, the distribution of POD was not same as the regions of lignin deposition completely.
从植物自身细胞壁蛋白活性出发来研究木质纤维素的酶解,为研究其酶解机制和高效酶解方法提供了新思路。
The main cell wall proteins of plant and the potential effects on enzymatic hydrolysis of lignocellulose are reviewed.
SKC1在木质部导管周围的薄壁细胞特异表达。
SKC1 is preferentially expressed in the parenchyma cells surrounding the xylem vessels.
植物细胞壁主要由木质素和纤维素组成,是未来生物燃料生产最富有的生物物质来源。
Plant cell wall is mainly composed of lignins and polysaccharides, representing the richest source of biomass for future biofuel production.
鸭跖草的木质部为六原型,韧皮部与木质部相同排列,根皮层中分布有粘液细胞和晶体细胞。
The phloems rage alternate with xylems. There are mucus cells and crystal cells in cortex of root. And vascular bundles scatter in stem.
次生韧皮部有石细胞,次生木质部射线发达。
Sclereids are found in secondary phloem, and rays are rather rich in secondary xylem.
次生结构发生于根毛区,维管形成层由初生木质部和初生韧皮部之间的薄壁细胞转化形成;
Secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem;
膳食纤维是一般不易被消化的食物营养素,主要来自于植物的细胞壁,包含纤维素、半纤维素、树脂、果胶及木质素等。
Dietary fiber is generally not be digested food nutrients, mainly comes from the plant cell, including hemicellulose, cellulose and lignin pectin and resin, etc.
次生生长包括维管组织形成、次生细胞壁形成、木质化、PCD以及心材形成等过程。
The secondary growth includes several consecutive processes such as vascular tissue differentiation, secondary cell wall deposition, lignification, PCD and heart wood formation.
结果表明,随贮藏时间延长,绿芦笋细胞壁半纤维素的主要降解物木糖、岩藻糖残基增加了211.2%,纤维素的主要降解物葡萄糖残基增加了329.3%,木质素含量增加了280.3%。
The results indicated that glucose derived from cellulose of cell walls, xylose and fructose derived from semi-cellulose and lignin content increased 211.2%, 329.3% and 280.3%, respectively.
结果表明,随贮藏时间延长,绿芦笋细胞壁半纤维素的主要降解物木糖、岩藻糖残基增加了211.2%,纤维素的主要降解物葡萄糖残基增加了329.3%,木质素含量增加了280.3%。
The results indicated that glucose derived from cellulose of cell walls, xylose and fructose derived from semi-cellulose and lignin content increased 211.2%, 329.3% and 280.3%, respectively.
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