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油细胞
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  oil cells
    Studies on the development of oil cells in Liriodendron chinense
    鹅掌楸油细胞的发育解剖学研究
短句来源
  “油细胞”译为未确定词的双语例句
    DEVELOPMENTAL ULTRASTRUCTURE OF OIL AND MUCILAGE CELLS IN CINNAMOMUM LONGEPANICULATUM
    油樟油细胞和粘液细胞发育的超微结构
短句来源
    According to the development of three wall layers,the process can be divided into 4 stages.
    依据油细胞 3层细胞壁的发育将其分为 4个阶段。
短句来源
    According to the results mentioned above, we come to the conclusion that significant differences of wood structures in Cinnamonum may be employed as classification confirmation.
    樟属所有木材的射线或轴向薄壁组织中含油细胞或粘液细胞。 木材的上述特征表明 ,樟属木材内部结构具有明显差异 ,并可作为种级分类依据。
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  oil cells
Secretory avocado idioblast oil cells: evidence of their defensive role against a non-adapted insect herbivore
      
We tested the hypothesis that avocado idioblast oil cells play a defensive role against herbivorous insects.
      
Toxicities of the intact avocado idioblast oil cells and the extracted idioblast oil were compared for three insect herbivores.
      
All bioassays were performed at a naturally occurring concentration of idioblast oil cells (2% w/w).
      
exigua larvae avoided diet treated with avocado idioblast oil cells and consume more control than treated diet.
      
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The oil cells in Liriodendron chinense differentiated earlier than the neighboring cells.Very young leaf and stem show fully developed secretory oil cells among poorly differentiated cells.The first recognizable stage was seen in the second primordia.The oil cell initial contains a large nucleus and densly cytoplasm,for which it is easy to identify it.Then,the oil cell begins to vacualize until a large vacuole is formed,therefore,the nucleus becomes flattened and is crushed between the oil cell wall and...

The oil cells in Liriodendron chinense differentiated earlier than the neighboring cells.Very young leaf and stem show fully developed secretory oil cells among poorly differentiated cells.The first recognizable stage was seen in the second primordia.The oil cell initial contains a large nucleus and densly cytoplasm,for which it is easy to identify it.Then,the oil cell begins to vacualize until a large vacuole is formed,therefore,the nucleus becomes flattened and is crushed between the oil cell wall and the large vacuole as a thin layer together with the reminant cytoplasm.After it reaches its maturity,the whole volume of the oil cell is filled with the large vacuole,which becomes the oil sac subsequently.In some oil cells,the cupule can be observed,but the occurance of lysis cavaties from oil cells reported by the other authors is not found.

鹅掌楸油细胞比相邻组织细胞分化早 ,因而在叶肉细胞未完全分化的叶原基、幼叶以及未完全分化的幼茎中 ,都可看到已分化的油细胞。通常 ,在第二叶原基中可发现油细胞原始细胞 ,由于其染色深、细胞核大而易与周围组织的细胞相区别。以后 ,油细胞逐步液泡化 ,直至形成一个大的液泡 ,此时 ,细胞核呈扁平状 ,并与细胞质一起成为一薄层围绕着大液泡。当油细胞发育成熟后 ,细胞质及核开始解体 ,整个油细胞的腔由大液泡充满 ,成为油囊。在部分细胞中 ,可观察到杯形构造 ,但没有发现溶生油细胞腔的结构。

Using ultrathin section and transmission electron microscopy,the developmental process of oil and mucilage cells in Cinnamomum longepaniculatum was observed.According to the development of three wall layers,the process can be divided into 4 stages.In stage 1,the cell wall is consist only of primary (the out) cellulose layer.This stage can also be divided into two periods:one of which is oil cell initial and another is vacuolizing oil cell.During this stage,there are some small electron translucent vesicles and...

Using ultrathin section and transmission electron microscopy,the developmental process of oil and mucilage cells in Cinnamomum longepaniculatum was observed.According to the development of three wall layers,the process can be divided into 4 stages.In stage 1,the cell wall is consist only of primary (the out) cellulose layer.This stage can also be divided into two periods:one of which is oil cell initial and another is vacuolizing oil cell.During this stage,there are some small electron translucent vesicles and quite different size dark osmiophilic drops in different shaped plastids.Similarly,there also exist dark and gray osmiophilic materials in ground cytoplasm,and their coalescence with vacuoles was observed too.In stage 2,suberized layer is present,and the lamellated suberin layer accumulates inside the primary cellulose layer.In stage 3,the inner cellulose wall layer is formed.Thicker and looser inner cellulose wall layer is piled up gradually inside the suberin layer.In this stage,because of the accumulation of a great quantity of osmiophilic material,the big vacuole becomes into an oil sac filled with osmiophilic lipophilic substances.In stage 4,oil cell matures and the cytoplasm disintegrates.After oil cell maturity,the ground cytoplasm starts to disintegrate,and becomes more electron opaque or exhibits a disordered state.Oil sac is enveloped by plasmalemma and attached to the cupule,which is formed by the protuberance of inner cellulose wall layer into the lumen.Mucilage cells come from parts of oil cells.There are two developmental patterns.One is that mucilage cell comes from oil cell whose inner cellulose layer has already formed.In the ground cytoplasm of such an oil cell,some multimembrane structures whose membrane arranged like concentric circles or like a spiral come out gradually and fill up the whole lumen.Finally,the multimembrane structures disintegrate and become into filiform or granular mucilage.Another pattern is that mucilage cell comes from fully matured oil cell,whose cytoplasm has already disintegrated.In such an oil sac,osmiophilic oil shows an inhomogeneous state.Many local disintegrative sites take place in the different electronic density oil,and these sites expand gradually.Finally,oil disintegrated completely into filiform or granular mucilage.This studies on the developmental ultrastructure of oil and mucilage cells verified that mucilage cell comes from oil cell.

利用超薄切片法和透射电镜研究油樟油细胞和粘液细胞发育过程。依据油细胞 3层细胞壁的发育将其分为 4个阶段。阶段 1:仅有初生纤维素壁层 ,又可分为原始细胞和细胞液泡化二时期。质体内具白色小泡和黑色嗜锇滴 ,细胞质中有黑色或灰色的嗜锇物质 ,以及嗜锇物质与液泡的融合。阶段 2 :栓质化壁层的形成。片层状的栓质叠加在初生纤维素壁内侧。阶段 3:内纤维素壁层的形成。较厚而结构松散的内纤维素壁层逐渐形成 ,并叠加在栓质化壁层的内侧 ,大液泡成为充满嗜锇油脂的油囊。阶段 4:油细胞成熟及细胞质解体。杯形构造由内纤维素壁层向细胞腔内突起形成 ,油囊由液泡膜包被连接到杯形构造上。解体的细胞质变得电子不透明或呈杂乱状态。粘液细胞发育方式有两种 :一种是由内纤维素壁形成以后的油细胞发育而来 ,其细胞质中不断产生以同心圆或螺旋线方式排列的多膜结构 ,并充满整个细胞腔 ,最后多膜结构解体而成为丝状或颗粒状的粘液 ;另一种是由已完全成熟的油细胞发育而来 ,其油囊中的油呈不均匀的状态 ,并产生局部降解点 ,逐渐扩大 ,最后油完全降解成颗粒状或丝状的粘液。

The wood anatomy of 17 native species belonging to Cinnamonum of Lauraceae was studied with both light microscope and scanning electron microscope.The main characters of the secondary xylem are as follows: (1) The woods are diffuse and semi ring porous with most solitary pores,a few multiple and cluster pores.(2) Vessel elements possess simple and scalariform perforation with predominantly alternate intervessel pits.(3) The woods possess mostly multiseriate ray and a few linear ray (4) Wood rays are heterogenous...

The wood anatomy of 17 native species belonging to Cinnamonum of Lauraceae was studied with both light microscope and scanning electron microscope.The main characters of the secondary xylem are as follows: (1) The woods are diffuse and semi ring porous with most solitary pores,a few multiple and cluster pores.(2) Vessel elements possess simple and scalariform perforation with predominantly alternate intervessel pits.(3) The woods possess mostly multiseriate ray and a few linear ray (4) Wood rays are heterogenous belonging to the Kribs' hetergeneous Ⅲ or Ⅱ B. Vessel ray pits are mainly of sculpture type (5) Wood axial parenchyma are mainly of diffuse and scanty paratracheal type, only a few are of vasicentric, aliform type (6) All woods of 17 species possess oil cells or mucilage cells in axial parenchyma cells or ray cells. According to the results mentioned above, we come to the conclusion that significant differences of wood structures in Cinnamonum may be employed as classification confirmation. Wood anatomy of Cinnamonum supports C.liouii and C.chingii as separate.

利用光学显微镜和扫描电子显微镜 ,对国产樟属 17种木材结构进行了观察。结果如下 :管孔排列为散孔材和半环孔材 ;较高的单管孔率 ;具有梯状穿孔和单穿孔两种类型 ,管间纹孔式主要为互列 ,少数种具对列。单列射线稀少、细而短 ,多列射线量多 ,形状差异较大 ;射线组织以异形Ⅲ和ⅡB型为主 ,射线 -导管间纹孔式主要为刻痕状。轴向薄壁组织以稀疏傍管状和星散状为主 ,部分种具环管束状、翼状 ,数量差异较大。樟属所有木材的射线或轴向薄壁组织中含油细胞或粘液细胞。木材的上述特征表明 ,樟属木材内部结构具有明显差异 ,并可作为种级分类依据。另外 ,根据木材结构的显著差异 ,建议光叶桂和细叶香桂按两个种处理。

 
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