- 更多网络例句与萌发孔相关的网络例句 [注:此内容来源于网络,仅供参考]
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Results There was no obvious discrimination of the seed morphology between AMM and AM.
结果通过肉眼和光学显微镜观察,两种黄芪种子的形态差异不明显,在电子显微镜下观察,两种黄芪种子的萌发孔形状、种脐和种皮的微观结构有明显差异;蒙古黄芪较膜荚黄芪种子硬实率高,萌发不整齐,萌发高峰滞后。
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The characteristics of ascospore, such as size, shape, symmetry, structure, pigmentation, presence, position and number of germ pores are the most important classified criteria of species.
对于种的划分,因子囊孢子的形态结构稳定,其大小、形状、萌发孔的数量及着生位置都比较恒定,应作为划分种的最重要的标准。
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Bryophyte spores have three types of aperture, the trilete is original one, the monolete is the evolutionary character and the katalept is mostly common one.
苔藓孢子的萌发孔有3种类型:三裂缝为原始类型,单裂缝是进化性状,近极薄壁区是最常见的。
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These events included the migration of microspores and vegetative nucleus and a polar pollen engorgement process.
在小孢子液泡化后期,小孢子核和细胞质远离小孢子萌发孔和绒毡层呈极性分布。
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Puna Chicory, leymus multicaulis and Psathyrostachysjuncea.For the materials used in this article were some old seeds which had been stored for 3-7 years, we found a lot of abnormal mitotic and meiotic cells, such as chromosome bridge. chromosome laggard, micronucleus, multipolar division and so on. Moreover, we also found the wheat"s multi-anther, double germinate-hole"s microspore and collected the photos of every period of meiosis. mitosis.
因为用于细胞学检测的小麦材料是搁置多年的陈旧种子,所以在检测染色体数目时,发现大量异常分裂现象,包括染色体桥、染色体落后、微核、多极分裂等;实验过程中还发现小麦多花药现象和花粉粒具双萌发孔的现象;同时在显微观察同时还注意搜集了细胞有丝分裂、减数分裂各个时期的分裂相图片。
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It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.
首次在买麻藤属植物的雌配子体中观察到2个游离核位于配子体的中央位置,且被一团原生质所包围的,其余的游离核位于边缘的现象以及花粉管进入雌配子体前,合点端的核已经发生胞质分裂形成多核细胞的现象 4、买麻藤的花粉近球形或扁平型,有单萌发孔,外壁表面具小刺状纹饰,小刺基部宽大,末端尖或钝圆。
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In addition, since Prinsepia utilis has angulaperturate pollen grains in the early stage of pollen development and shars the same character with two taxa Geissois montana and Cunonia capensis under Cunoniaceae, the pollen morphological data supports the viewpoint that Rosaceae may have a systematic relationship with Cunoniaceae under Saxifragales.
此外,由于Prinsepia utilis的花粉在其发育初期具角萌发孔花粉,与Cunoniaceae下的两个类群Geissois montana和Cunonia capensis具有相同的特征,故花粉形态特征在一定程度上支持Rosaceae可能和虎耳草目中的Cunoniaceae有一定系统学联系的观点。
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Result:The pollen is morphologically oblate, suboblate, spheroidal and prolate. The external sculpture is commonly reticulate, striate and echinulate.
结果:其花粉多为扁球形、近球形、三角形、四角形等;萌发孔为三孔沟、三沟、散沟等;外壁纹饰多为网状纹饰、条状纹饰、刺状纹饰。
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The types of apertures include monosulcate, 36 colpate, irregular pantocolpate, tricolporate, 2~4 porate and pantoporate. The ornamentation of exine are spinulose, finely reticulate, coarsely reticulate, granular and stripe-perforated.
花粉的萌发孔主要有单沟、3~6沟、不规则散沟、三孔沟、2~4孔及散孔等6种类型,其外壁纹饰主要包括刺状、细网状、粗网状、颗粒状及条纹穿孔等5种类型。
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The sac structure projected through the pollen aperture possesses the typical nature of transfer cell, i. e complex lybrinthian wall ingrowth and abundant mitochondria, RER, dicotysomes and ribosomes under the wall. Its outer surface is closely related to the tapetal protoplast. The accumulation of storaged material in pollen start at the area near the apertures. Above restults indicate the pollen apertures may be the"door"from where nutrition flows into pollen in P. hortorum.
绒毡层物质向花粉粒的短途运输明显的表现在花粉的萌发孔区,一方面形成向外突起的囊腔,另一方面在这里具有发达的壁迷宫,而且迷宫下具丰富的线粒体,RER和高尔基体等细胞器,此外花粉内贮藏物的大量积累首先从萌发孔附近开始以及萌发孔处与绒毡层有紧密接触都说明天竺葵花粉萌发孔可能是物质进入花粉的&门户&。
- 更多网络解释与萌发孔相关的网络解释 [注:此内容来源于网络,仅供参考]
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equatorial armilla:赤道经纬仪
equatorial aperture 赤道萌发孔 | equatorial armilla 赤道经纬仪 | equatorial armillary sphere 赤道经纬仪
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corbicula:[动]蚬; 粉筐
pantotreme 具散萌发孔 | corbicula [动]蚬; 粉筐 | contraction of area 断面[面积]收缩
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male gametophyte:雄配子体
花粉(pollen)是种子植物的雄配子体(male gametophyte),产生雄配子(精子)(male gametes). 被子植物的花粉是只包括3个细胞的球形结构,即一个营养细胞(vegetative cell)、2个精子(雄配子),具有坚硬、稳定的花粉壁和萌发孔(萌发沟).
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germination:孢子萌发
单一的担孢子萌发(Germination),发育成初生单核菌丝(hyphae,单数hypha),并由桶孔(dolipore)隔膜隔开,二条异质单核菌丝经质配结合(plasmogamy)形成具双核(dikaryon)的次生菌丝(secondary hyphae).
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aperispermic,aperispermous:无胚乳的
apatetic color 拟色,保护色 | aperispermic,aperispermous 无胚乳的 | apertura 孔,开口,萌发孔
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Chenopodiaceae:黎科
大多数双子叶花粉属之. 异极花粉的两个极有明显不同,如萌发孔的有无,大多数单子叶花粉属之. 亚等极花粉则介乎两者之间,如在两个极有一些次要的差别. 此外,有的花粉不具明显的极性,称为无极的花粉. 如黎科(Chenopodiaceae)的花粉.
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colpus, furrow:沟
14.031 拟萌发孔 aperturoid, tremoid | 14.032 沟 colpus, furrow | 14.033 拟沟 colpoid
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ditokous:双产的
6,8-dithio-n-octanoic acid 6,8-二硫正辛酸,硫辛酸 | ditokous 双产的 | ditreme 双萌发孔
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aperture, trema:萌发孔
14.026 基层 foot layer | 14.027 萌发孔 aperture, trema | 14.028 螺旋状萌发孔 spiraperture, spirotreme
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germ pore:芽孔,萌发孔
germ plasm 种质 | germ pore 芽孔,萌发孔 | germ theory 生源说