- 更多网络例句与配子体的相关的网络例句 [注:此内容来源于网络,仅供参考]
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Apospory The devlopment of the gametophyte directly from the cell of a sporophyte, thus bypassing meiosis and spore production.
无孢子生殖:配子体的发育直接来自孢子体的细胞而不经过减数分裂和孢子产生的生殖过程。
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Female gametogenesis in higher plants undergoes various developmental changes, including the de novo formation of germline cells, the differentiation of the megaspore mother cell, meiosis, megaspore selection, and the development of the embryosac.
高等植物雌配子体的形成涉及孢原细胞和大孢子母细胞的确立与分化、大孢子发生、功能大孢子以及胚囊的形成和发育等多种复杂调控过程。随着当代生物技术及功能基因组学的发展,近年对雌配子体发育的研究已从细胞学描述逐渐过渡到对基因和发育调控分子机理的探索。
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Mature embryo sac can form from megaspore mother cell on the modified VW medium supplemented with 0.5mg/L BA and 0.1 mg/L NAA.
在培养基无外源激素或仅含生长素或细胞分裂素时,雌配子体的发生过程不能顺利完成;在改良VW培养基上添加0.5 mg/L BA和0.1 mg/LNAA时,形成成熟胚囊。
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The fern spore, the original cell of the gametophyte, carries out asymmetrical mitosis to produce a large cell and a small cell. The small cell geminates to a rhizoid by tip growth, and the large cell further divides and develops to become a prothallus.
蕨类植物孢子作为配子体的原始细胞,通过不对称的有丝分裂产生一大一小两个细胞,小细胞萌发出极性生长的假根,大细胞继续分裂发育为原叶体。
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Two culture methods, sterilized MS medium and garden soil medium, were comparatively studied for spore germination of Dryopteris varia, with the observation of its gametophyte development under light microscope.
应用无菌培养和常规泥土培养两种方法对变异鳞毛蕨孢子进行了比较研究,并在光学显微镜下观察了其配子体的发育过程。
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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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The model of gametophytic inheritance was hypothesised and analysed in this paper.
对配子体的遗传模式进行了假设和分析。
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On the basis of results of our test,we suggest that low temperature pretreatment changes content of endogenous IAA and iPA of anther,thus interrupts previous developmental direction of pollen and induces microspores develop from a gametophytic way to a sporophytic way.
根据实验结果,推测低温预处理改变了花药内源IAA和iPA含量,阻断了花粉原来的发育方向,使其由配子体的发育途径转向孢子体的发育途径。
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Epiphytic bacteria were isolated from sporophytic thallus collected from Qingdao and Dalian or gametophytic filaments stored in our lab of Laminaria japonica. Identification was done using both traditional physiological and biochemical way and molecular method. Phylogeny tree was established based on 16S rRNA gene sequence analyses, and some sequences of epiphytic strains from both sporophyte and gametophyte were different from all the sequences already exit and could be the new species.
采用生理生化和16S rRNA基因序列比对的方法对从两个海区采集的海带孢子体以及实验室中保存的海带配子体样品的外生菌分别进行组成分析,16S rRNA基因序列揭示了在海带孢子体和配子体的外生菌中都存在一些与现有数据库中序列的遗传关系较远的菌株。
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The temperature affects the development time of female gametophyte. The time from sporogenous cell observed to formating of female gametophyte needs 14 days at high temperature, but it needs about 20 days at low temperature.
温度影响雌配子体的发育时间,从观察到造胞细胞到雌配子体形成在高温条件下需14d左右,在低温条件下需20d左右。
- 更多网络解释与配子体的相关的网络解释 [注:此内容来源于网络,仅供参考]
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gametocyte:配子体
疟原虫通过蚊子叮咬进入宿主体内后首先侵入肝脏细胞,再由肝脏进入血液感染红血球,在红血球内无性繁殖扩增之后,受外部环境因素的影响,它们可以继续感染新的红血球,也可能形成配子体(gametocyte),当蚊子吸取受感染的血液后,雄,
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gametophyte:配子体
:) 配子体(gametophyte) 在植物世代交替的生活史中,产生配子和具单倍数染色体的植物体. 苔藓植物配子体世代发达,习见的植物体为其配子体,孢子体寄生在它上面. 蕨类植物的配子体称原叶体,虽能独立生活
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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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male gametophyte:雄性配子体
而后形成许多单核"裂殖子"(schizozoite),这些裂殖子重新侵入一些其它细胞,而且此一循环往往要重复二次或三次;在经历数次的无性世代(agamobium=asexual generation)之后,裂殖子又进入其它细胞内,发育成为"雄性配子体"(male gametophyte)及"雌性配子体"(
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isogamete:同形配子体
isogametangium 同形配子囊 | isogamete 同形配子体 | isogamous 同形配子的
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isogamy:同形配子
当环境恶劣时,可以同形配子 (isogamy)、不同形配子 (anisogamy) 或精卵结合 (oogamy) 进行有性生殖. 藻类的生活史有三型: 合子生活史 (zygotic life cycle) 一生活史中的个体以配子体 (单套) 世代占优势,只在合子短暂的时期具有双套,
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macrogamete:大配子
在宿主细胞内部,雄性配子体(亦称小配子体(microgametocyte))进行核的分裂(karyokinesis),产生出许多具有鞭毛的小配子(microgamete);同样,雌性配子体(亦称大配子体macrogametocyte))也进一步形成一个个大配子(macrogamete);小配子使大配子受精后,
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microgametocyte:小配子体
在宿主细胞内部,雄性配子体(亦称小配子体(microgametocyte))进行核的分裂(karyokinesis),产生出许多具有鞭毛的小配子(microgamete);同样,雌性配子体(亦称大配子体macrogametocyte))也进一步形成一个个大配子(macrogamete);小配子使大配子受精后,
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gametophytic reaction:配子体反应
产生不亲和性的基因.一般用S表示,复等位基因以S1,S2,...等表示.大体可分为二类:一是雌蕊的基因与花粉含有的基因相同时,便会阻抑花粉管的伸长,这是由花粉表现的性质(它取决于花粉的基因型、即配子体的基因型)所规定的,称为配子体反应(gametophytic reaction),可以山德氏烟草(
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macrogametocyte:大配子体
第二代的裂殖子再侵入上皮细胞形成大配子体(macrogametocyte)与小配子体(microgametocyte). 小配子体分裂产生许多小配子(microgametes),大配子体不分裂,发育成大配子(macrogamete). 大小配子结合成合子(zygote),合子分裂成4个孢子虫,