- 更多网络例句与蕨类植物相关的网络例句 [注:此内容来源于网络,仅供参考]
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Composition of both spermatophyte and pteridophyte flora of a relict Alsophila spinulosa community in Wutongqiao Nature Reserve of Leshan region was discussed. It shows the proportion of Tropic and Cathaysia elements in both spermatophyte flora and pteridophyte flora was almost 2/3 of the total at the genus level, and even more at the family level. There was a distinct ancient endemism phenomenon in spermatophyte flora, owning to being 8 relict and remnant endemism genera in the total of 9. Furthermore, the proportion of Tropic and Cathaysia elements both at family and genus level in the pteridophyte flora were much greater.
选以乐山五通桥桫椤自然保护区-桫椤群落的种子植物区系与蕨类植物区系组成为研究对象,发现种子植物区系在属的水平上热带成分与古华夏成分占到近2/3,在科的水平上则更高;种子植物区系中有9个中国特有属,其中8个为残遗或原始类型的古特有属,表现出典型的古特有现象;而在蕨类植物区系中热带成分和华夏成分所占比重更大。
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In this paper the authors reviewed the characteristics in the different phases in the life cycle of ferns. Special attentions were given to the effect of light, plant growth regulators, water and temperature on the fern gametophyte development, and the effect of antheridiogen, light, calcium and other plant growth regulator on the formation and differentiation of fern sex organ.
作者概述了蕨类植物生活周期中不同发育阶段的特点,并着重介绍了光、植物生长调节物质、水和温度等因素对蕨类植物配子体发育的影响以及成精子囊素、光、钙离子和其它植物生长调节物质在性器官形成和分化过程中的作用。
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In the study on the fern population structure, we through the analysis of the variation in height structure, leafstalk diameter structure and age structure in various forest communities, found the rule of variation of population, and discussed the reasons of variation of population structure, and explored the suitable habitat of various forest ferns.
在蕨类植物种群结构的研究中,我们通过对不同群落中蕨类植物种群高度结构、叶柄直径结构和年龄结构的研究,发现种群结构变化的规律,找出种群结构变化的原因,探索出各种蕨类植物种群的适生生境。
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The applications of chromosome numbers and basic numbers in pteridophyte systematics are reviewed in detail. The significance of karyotype analysis, polyploidy, pogamy, and reticulate evolution in pteridophytic classification, evolution, and phytogeography is also reviewed.
文中论述了蕨类植物染色体数目和染色体基数在系统学上的应用以及蕨类植物染色体组型分析、多倍化、无融合生殖、多倍体复合体及网状进化的研究概况。
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Based on research references, Pteridophyte's geographical distribution, chemical constituent and its value
综述蕨类植物及其综合利用价值,为蕨类植物的深入研究、综合开发提供重要的理论依据。
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What's more, according to the function, organism study and resource features, it also divides the Pteridophyte resources of this region into 8 types like medicine, appreciation, food, instruction, chemical material, weaving and packaging, fodder and green mature, rare, endangered and precious, and some suggestions on how to exploit and utilize them are put forward as well.
按其用途、生物学习性及资源特点将该区蕨类植物划分为药用、观赏、食用、指示、化工原料、编织、包装、饲料和绿肥及珍稀濒危与珍贵保护蕨类植物8种类型,并提出加大开发力度、推广人工栽培技术、加强资源综合性开发研究,变资源优势为经济优势等建议。
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Ferns are found in the valleys in a great variety, the most striking being the Gleichenia Dichotyma,, a hardy fern which covers the hills up to a altitude of 1,600 feet. the following kinds grow only in damp shady spots: Aspidium or shield fern; and Selaginella or Moss fern.
还有,蕨类植物在山谷里随处可见,最有名的是里白木(一种耐寒的蕨类植物,生长在海拔1600英尺的山上),但是绵马根和卷柏这两种蕨类植物只生长在阴暗潮湿的地方。
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The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.
结果表明,松阳蕨类植物共有38科72属161种7变种;优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科,优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属;科的分布以世界分布和泛热带分布为主,属的分布以泛热带分布为最多,种以东亚分布类型为主,特别是中国—日本分布类型最多,表现出亚热带向暖温带过渡的特点;本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北;与邻近的6个山地蕨类植物区系的亲缘关系密切,可以划为同一自然区;与国内11山地蕨类植物区系相比,松阳的蕨类植物丰富程度不高;松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物,有较高的保护价值。
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In filicophytes, there was a relatively high ratio of VA mycotrophy in the eusporangiates, and there was no autotrophic in the eusporangiates; but the ratio of autotrophic was up to 71%, and the ratioes of VA mycotrophic and facultative mycotrophic were low, 15% and 14% respectively in the leptosporangiates.
用碱解离、酸性品红染色法对云南热带、亚热带自然生长和部分移栽到温室中的256种(拟蕨类植物20种,真蕨类植物236种)蕨类植物孢子体的VA菌根状况进行了调查研究,结果发现,在拟蕨类植物中,孢子体只存在兼性VA菌根营养和自养两种菌根营养类型,两种类型,两种类型所占的比例相当;在真蕨类植物中,厚囊蕨类植物VA菌根营养的比例较高(92%),且无自养类型;而在薄囊蕨类植物中,自养型占71%,VA菌根营养和兼性菌根营养所占的比例都不高,分别是15%和14%。
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Ninety seven spores or sporocarps of VAMF were wet sieved from the rhizosphere soil of mycorrhized pteridophytes, from which 25 VAMF species which belonged to the genera of Acaulospora, Gigaspora, Glomus, Sclerocystis and Scutellospora respectively were identified, and the taxonomic characters of the 25 species were described. The Glomus fungi were the dominant VAMF in the rhizosphere soil of pteridophytes, they took up 44% in the identified 25 VAMF (11 species belong to Glomus); the fungi in Acaulospora and Sclerocystis in the next place, they took up 24% and 16% respectively in the identified VAMF; the fungi in the other genera took up 16%. In terms of the relationships of pteridophytes and the VAMF isolated from their rhizosphere soil, there was no specifity between the VAMF and their host.
从具有VA菌根的蕨类植物对应的根际土壤中用湿筛法筛取了97份VA菌根真菌的孢子或孢子果,从中鉴定出了分属于无醒囊霉属、巨孢囊霉属、球囊霉属、硬囊霉属和盾孢囊霉属的VA菌根真菌25种,并对这25种真菌的分类学特征进行了描述;球囊霉属真菌是蕨类植物根际土壤中的优势类群,已鉴定的25种真菌中,有11种属球囊霉属真菌,占44%,其次是无梗囊霉属和硬囊霉属真菌,分别占24%和16%,其他属的VA菌根真菌占16%,从分离鉴定的蕨类植物根际土壤中的VA菌根真菌与蕨类植物的关系看,VA菌根真菌与蕨类植物之间无明显的专一性。
- 更多网络解释与蕨类植物相关的网络解释 [注:此内容来源于网络,仅供参考]
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archegoniate:颈卵器植物(如苔藓、蕨类植物等)
archegonial | 颈卵器的,有颈卵器的 | archegoniate | 颈卵器植物(如苔藓、蕨类植物等) | archegonium complex | 复合颈卵器
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fern:蕨类植物
消失的印尼雨林 Hutan Indonesia Hilang 要爱惜地球! 蕨类植物(Fern)生态解说@西温哥华灯塔公园海岸原始森林
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ferns:蕨类植物
木本石松植物(Ly-copods)、芦木植物(Calamites)、蕨类植物(Ferns)、种子蕨(Pteridosperms)、科达树(Cordaites)等空前繁盛. 无脊椎动物以蜓类(原生动物门,肉足虫纲,有孔虫亚纲的一目)、腕足类和四射珊瑚(Tefracorallia),
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pteridologist:蕨类植物学家
orchidologist兰花培植学家 | pteridologist蕨类植物学家 | methodologist 方法学家
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Pteridophyte:蕨类植物
蕨类植物(Pteridophyte)具有多种生理活性,具有抗菌消炎、清热解毒和驱虫等功效,近年来发现其复杂的天然活性成分具有抗肿瘤作用.为了推动药用蕨类植物治疗癌症和抗癌的蕨类植物筛选工作,本文对蕨类植物活性成分及其抗肿瘤作用的研究进行综述,
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Pteridophyte flora:蕨类植物
黄土高原:Flora Loess-Plateaus | 蕨类植物:Pteridophyte flora | 区系组成:flora composition
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fern and fern allies; Pteridophyte:蕨类植物
蕨类时代;羊齿时代 fern age | 蕨类植物 fern and fern allies; Pteridophyte | 凤尾蕉;苏铁(日) fern palm; cycad; Japan sago; Cycas
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Boston Sword Fern:蕨类植物波士顿剑
True Myrtle真默特尔 | Boston Sword Fern蕨类植物波士顿剑 | Bal comb Ivy Geranium平衡梳常青藤鹳
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Pteridophyta:蕨类植物门
⒉蕨类植物门(Pteridophyta)蕨类植物比苔藓植物进化特征突出,孢子体发达,配子体退化,有明显的根茎分化,出现了较原始的维管组织. 由于出现了物质运输系统因而进一步适应了陆地生活的环境,在地球上曾出现过高大的植物体,统治着地球.
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Pteridophyta:蕨类植物
第九章 蕨类植物(Pteridophyta) 关于维管植物 一、中柱类型及其演化 二、维管植物的分类系统 第一节 蕨类植物概述 一、孢子体 二、配子体 三、生活史 第二节 松叶蕨亚门(Psilophytina) 一、形态结构 二、分类及代表植物 第三节 石松亚门(Lycophytina) 一、形态和结构 二、分类及代表植物 第四节 水韭亚门(Iso溛phytina) 一