查询词典 palisade
- 与 palisade 相关的网络例句 [注:此内容来源于网络,仅供参考]
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There were different leaves structure between resistant and susceptible cultivars, the leaves structure studied included thickness of leaves, No.of palisade tissue, density of palisade tissue, thickness of the first line palisade cell, thickness of the second line palisade cell, density of inter-epidermal cell and density of exter-epidermal cell.
对大豆灰斑病抗病品种和感病品种的叶片组织结构,主要包括栅栏组织层数、栅栏组织密度、上下表皮细胞密度、蜡质含量及叶比重等,进行了比较研究。
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The palisade tissue cells of common type were 2 layers, while those of spur-type and columnar type were 3 or 4 layers. The ratio of palisade tissue and spongy tissue of common type was less than 1, and that of spur type and columnar type was more than 1. Moreover, the number of palisade tissue cell layers and the ratio of P/S were increased with the dwarfing degrees.
普通型苹果的叶片栅栏组织细胞一般排列成2层,其栅栏组织与海绵组织的厚度比值小于l;而柱型和短枝型的栅栏组织细胞通常排列成3层或4层,其栅栏组织与海绵组织的比值大于1,而且,随着矮化程度的加强,栅栏组织细胞层数和栅/海比有增加趋势。
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The results show:the above two species of Flos lonicerae's palisade parenchyma are composed of 1 layer of cylindrical cells.But in karst areas variety palisade parenchyma is cylindrical cells .Palisade and spongy tissue have distinctly differentiation.,are both bifacial leaf.
研究结果表明:以上2种金银花栅栏组织的层数均为一层,有栅栏组织和海绵组织的分化,均为异面叶;但岩溶地区的栅栏细胞为圆柱形,非岩溶地区的栅栏细胞为长柱形;岩溶地区品种的上下表皮细胞明显比非岩溶地区的品种大,并且其栅栏组织和海绵组织的排列较非岩溶地区品种紧密;气孔都仅分布在下表皮,气孔类型为肾形,岩溶地区气孔密度大。
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Based upon the ecoanatomical method, leaf anatomical characters of eleven populations of six evergreen species (Cyclobalanopsis glauca, C. myrsinaefolia, C. gracilis, Castanopsis sclerophylla, C. eyrei and Lithocarpus glaber) from the eastern subtropical area of China were analyzed and compared with SPSS, DCA and TWINSPAN. The results are: 1. Although the leaf structures of the eleven populations still belong to the mesophyll type, they all express the trend of xerophilization. 2. There are some differences in leaf anatomical characters among populations, species and genera, which occur as the results of their adaptation to different habitats. 3. Different leaf anatomical characters have different variations among populations, species and genera, of which leaf thickness and palisade tissue thickness (considered as ecological adaptation characters) have greater variation than sponge tissue thickness, lower cuticle thickness and lower epidermis thickness (as systematical evolution characters). 4. The leaves of C. sclerophylla and C. glauca with thicker lamina, palisade tissue and cuticle (a multilayered upper epidermis in C. sclerophylla) are thought to better adapt to their dry habitat. The leaves of C. eyrei with thicker sponge tissue, although characterized by a multlayered upper epidermis, adapt to their humid and warm habitat. The leaves of C. myrsinaefolia and C. gracilis characterized by a thinner lamina, a less palisade tissue and a moderate cuticle thickness adapt to the humid and cool habitat in a middle mountain.
选取亚热带东部替代分布明显的壳斗科6种常绿树种(青冈、小叶青冈、细叶青冈、苦槠、甜槠和石栎)的11个种群叶片进行生态解剖,并用SPSS, DCA和TWINSPAN比较分析,结果表明:①尽管6种11个种群叶的结构仍属中生叶型,但有着不同程度的趋旱适应;②叶的解剖性状在属间、种间和种群间均存在着不同程度的差异,这是它们适应各自生境的结果,青冈和石栎的种内差异较大,反映出它们对环境变化有较强响应能力;③叶片的不同解剖性状在属、种类和种群间的变化并不同步,其中叶片和栅栏组织厚度等性状差异突出,反映它们更易受环境的饰变,是生态适应性状,而海绵组织、下角质膜,特别是下表皮厚度等性状差异较小,显示出这些性状的稳定性,可以认为是系统演化性状;④苦槠、青冈具有较厚的叶片、栅栏组织、角质膜和发达输导和机械组织,苦槠还具有复表皮,表现出对旱化生境的适应;甜槠尽管具有复表皮和较厚的叶片,但这是海绵组织增厚的结果,是对中生生境的适应;小叶青冈和细叶青冈具有较薄的叶片和栅栏组织、角质膜厚度居中等特点,可能是对中山凉湿生境的适应。
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The size and localization of oil cells in the leaves, combined with the thickness of leaves, the number of layer of palisade tissue, the ratio of the thickness of palisade tissue to that of spongy tissue, the hypoderm, and the type of hairs, may be used as the identification characteristics of the generas, and even species.
木兰科植物油细胞的分布及其大小与叶厚、栅栏组织层数、栅栏组织与海绵组织厚度间的比值以及下皮层的有无、表皮毛的类型、叶脉的结构等特征相结合,可作为该科中属、甚至种的鉴别特征。
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The results showed that exogenous substances could promote the upper leaf area increase, and accommodated the thickness of palisade tissues, spongy tissues and the cell density of palisade tissues dynamic changes, and decreased leaf thickness, loosen the tissue, and increased the potassium content, while reduced nicotine content.
结果表明,外源物质可促进上部叶面积增大,调节叶片栅栏组织、海绵组织厚度和栅栏组织细胞密度的动态变化,促使叶片厚度降低,组织变得较为疏松,促进钾素含量提高和烟碱含量降低。
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The thickness of palisade tissue decreased, and that of spongy tissue had no relation with salinity, the ratio of the thickness of palisade tissue to spongy tissue decreased with increasing salinity.
扫描电镜下栅栏组织细胞中的叶绿体数量和形态未见明显的变化,但叶绿体在细胞中的位置发生了改变。
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Considering other differences that in leaves of Podocarpus there are three resin ducts under vascular bundle of midrib, mesophyll cells are differentiated into palisade tissue and sponge tissue; in leaves of Nageia, there is only one resin duct under vascular bundle in each vein and no obvious differentiation in mesophyll cells, palisade tissue can be found on both sides, and sclereids can also be found in mesophyll tissue.
结合罗汉松属植物主脉维管束下面有3个树脂道,叶肉分化为栅栏组织和海绵组织,而竹柏属植物每个叶脉维管束下面有1个树脂道,叶肉分化不明显,两面都有栅栏组织,叶肉中还具有大量石细胞等特征,认为罗汉松属和竹柏属在叶脉、叶形态和结构方面存在明显差异,2个属分开是比较合理的。
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Results showed: in Podocarpus leaves, there is only one midrib, the xylem tracheid of midrib vascular bundle is multi-form, transfusion tissue belongs to Cycas-type and transfusion tracheids are isodiametric, the accessory transfusion tracheids between palisade tissue and sponge tissue are developed; in Nageia leaves, there are plenty of parallel leaves, the xylem tracheids of each vein are relatively simple, transfusion tissue belongs to Taxus-type and transfusion tracheids are longer in longitudinal section than that in transverse section, the accessory transfusion tissue between palisade tissue and sponge tissue is absent.
结果表明:罗汉松属叶1条主脉,主脉维管束木质部管胞发达,转输组织为苏铁型,转输组织管胞等径,栅栏组织和海绵组织之间的副转输组织管胞发达;竹柏属叶多条平行叶脉,维管束木质部管胞相对不发达,转输组织为红豆杉型,转输组织管胞纵向伸长,栅栏组织和海绵组织之间不存在副转输组织。
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Main conclusions are as follows:(1) changes of leaf morphological and anatomical structures with tree height:25 researched tree species exhibited xeromorphic structures at tree top,that is,toward tree top,leaves were with 1 increased cuticle thickness;2 developed palisade tissue and even double-palisade structure;3 densely arranged tissue cells;4 smaller cells;5 thicker epidermis,smaller and denser stomata;6 smaller and thicker leaf,great LMA value.
本文主要得出以下结论:(1)叶片结构随树高的变化:研究的25种树种表现为越往树顶处:1角质层越厚;2栅栏组织越发达,全栅特征越明显;3叶组织细胞排列越紧密;4叶肉细胞越小;5表皮层越厚,气孔越小而密、单叶的气孔总面积越小;6叶片越小而厚,LMA越大。
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这是被称为经纪人协助交易和一些经纪人提供选项如交互式语音应答系统下订单的电话及无线交易系统,为决策命令,利用可上网手机或其他手持装置上。