bundle sheath
英 [ˈbʌndl ʃiːθ]
美 [ˈbʌndl ʃiːθ]
维管束鞘
双语例句
- The cells of leaf bundle sheath contain numerous chloroplasts and starch grains.
叶的维管束鞘细胞含有许多叶绿体和淀粉粒，可以断定它是四碳植物。 - Bundle sheath the ring of parenchymatous or sclerenchymatous tissue, usually one cell thick, that surrounds the vascular bundle in an angiosperm leaf.
维管束鞘：在被子植物叶中，围绕维管束的通常是一层薄壁或厚壁细胞。 - The results showed that the dedifferentiation of the leaf was initiated in the vascular bundle sheath cells.
结果表明，叶片组织脱分化的起始部位在微管束鞘； - Semi-thin sectioning and the method commonly referred in histochemistry were used to study the development of vascular bundles in Aloe arborescens leaves with emphasis on the origins and tissue types of vascular bundle sheath cells and aloin-containing cells.
采用半薄切片和组织化学方法研究了木立芦荟（Aloearborescens）叶内维管束的发育过程，并着重于维管束鞘细胞和芦荟素细胞的来源及组织类型。 - A severe CTV isolate, CTV-3 infected Mexican lime had 63% of vascular bundle sheath cell degraded at the prominent vein clearing area and 34%-48% in the less prominent areas.
强株系CTV-3侵染墨西哥酸橙后，脉明明显的区域，有63%的维管束鞘厚壁组织细胞退化，脉明不明显的区域仅有34%～48%的退化； - According to the observations of the paraffin section indicated that the callus were originates from the parenchyma cells of the vascular bundle sheath.
石蜡切片观察表明，愈伤组织是由维管束鞘薄壁细胞分裂而来。 - An analysis of variance indicated the most significant difference was observed among the cross-section areas of the bundle sheath cells between two large size vascular bundles in different leaf layers.
变量分析表明：它们之间的维管束鞘细胞的横剖面积，在不同叶层之间，差异是极显著的； - The chloroplasts of both the mesophyll and the bundle sheath cells contain many grana.
束鞘细胞的叶绿体和叶肉细胞的叶绿体都含有许多基粒。 - The vascular bundle consists of vascular bundle sheath, xylem, phloem and big parenchymatous 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 chloroplasts in vascular bundle sheath cells ( VB) and paraveinal mesophyll cells ( PVM) are small in number and in size, thin with stroma, and simple with grana structure.
维管束鞘细胞和平脉叶肉细胞中叶绿体数目较少、体积小、基质较稀疏，叶绿体基粒及片层结构较简单。 - Higher Na+ and Mg 2+ was determined in the mesophyll cells than in the bulliform cells and vascular bundle sheath cells, and higher K+, Ca 2+ and Cl-in the vascular bundle sheath cells of the light salt meadow ecotype.
在轻度盐化草甸芦苇的叶肉细胞内分布较多的Na+和Mg2+，而在鞘细胞内K+、Ca2+和Cl-的分布均较叶肉细胞和泡状细胞为高。 - Aloin was produced in the plastids of the assimilating tissue, it reached the vascular bundle sheath by apoplastic endoplasmic, stored, finally in the large parenchymatous cells by means of plasmodesmata.
芦荟素在叶的同化组织细胞的质体中合成，通过质外体途径转运到维管束鞘细胞，由其胞间连丝运送到大型薄壁细胞内贮存。 - The results showed: cells rounded the procambium bundle differentiated into bundle sheath at the initial stage of procambium bundle developing into vascular bundle.
结果表明，在叶内原形成层束分化成维管束初期，原形成层束外侧的一层细胞发育成维管束鞘。 - Activity levels and compartmentalization of PEPC and RuBPC, and the patterns of the promotion and inhibition of CO_2 fixation in bundle sheath chloroplasts by the metabolic intermediates of photosynthesis.
PEPC和RuBPC的活性水平，分室隔离以及光合代谢中间产物对VBS叶绿体固定COz作用的促进和抑制； - Whereas, the stomas of the upper epidermis of the thin-leave type settle strongly, there are no dividing between palisade tissue and spongy tissue in the diachyma, the vascular bundle sheath consists of lignification and suberin cells.
细叶型的叶上表皮气孔强烈下陷，叶肉无栅栏组织和海绵组织的区别，由木质化或栓质化细胞形成维管束鞘。 - Some were also located in the cells of vascular bundle sheath of the fine veins, mainly distributed over the chloroplasts, cytoplasm and cell wall.
小叶脉的维管束鞘细胞中也有很多的金颗粒标记，金颗粒主要分布在叶绿体、细胞质及细胞壁中。 - STUDIES ON THE RELATIONSHIP BETWEEN THE EVOLUTIONAL SUCCESSION OF SUGARCANE VARIETIES AND THEIR PHOTOSYNTHETIC MEMBRANES ⅲ. The relationship between the evolutional succession and the leaf bundle sheath cells
甘蔗栽培品种的更替与光合膜关系的研究&Ⅲ.品种更替与叶片维管束鞘细胞的关系 - The mesophyll of the lamina is homogeneous, and the vascular bundle sheath of the lamina has 2 layers of cells.
叶片具有同形的叶肉组织，叶脉维管束鞘具2层细胞。 - Isolated bundle sheath cells alsoshowed a certain capacity of CO_2 fixation.
离体的维管束鞘细胞束也有一定的CO2固定能力。 - The results show that, under the experimental conditions, the alkali stability of silicon in outer cuticle and in its neighboring fiber wall is lower, and that of the silicon in bundle sheath and in inner epidermis is very high.
结果表明，在碱法制浆过程中，麦秆外表面皮层及皮下纤维层中的Si对碱的稳定性较差，麦秆内部的维管束及内表皮层中Si的碱稳定性较高； - The number of the vascular bundle is usually odd, and the vascular bundle sheath is composed of parenchyma cells;
叶片中维管束数目大多为奇数，叶脉维管束鞘由薄壁细胞组成；