查询词典 egg apparatus

The results of three eggapparatus and two egg apparatus cause the fact that the frequency of twin is higherthan that of triple embryos.

三卵卵器结构胚囊"和"二卵卵器结构胚囊"的受精情况造成了APⅣ的2胚频率远高于3胚的。"

The female gametophyte consists of egg apparatus, central cell and three antipodal cell at the mature embryo sac stage.

以福建省锥栗主产区建瓯市采集的17个锥栗品种的花粉为材料，经前处理后进行电镜扫描。

In the present review, we focus on some of the recent advances and some key developmental events revealed in the fertilization process, including the role of the egg apparatus in guiding pollen tube orientation, sperm cell movement to their targeting cells, interaction between gametes, egg cell activation, and onset of embryogenesis and endosperm development.

本文着重讨论受精作用的若干重要发育事件，包括受精前卵器细胞对花粉管向胚珠定向生长的近距离引导信号，精子的靶向运动，精、卵细胞相互作用和配子融合后卵细胞的激活与中央细胞发育的启动等。

Observing the mature embryo sac of the mutant: It was found thatthe embyo sac appeared in typical polygonum type and more than 90% of the embryo sac hadintegral inner structure. They had egg apparatus, two polar nucleus and three antipodal cells , and their position in the embryonic sac was normal .

幼穗分化、成熟胚囊观察发现，90％以上的胚囊具有完整的内部结构，有卵器、两个极核及多个反足细胞，且位置正常，胚囊呈现典型的蓼型结构；同时还观察到雌、雄器官的发育是同步的。

Egg apparatus The three haploid nuclei that are situated at the micropylar end of the embryo sac in most flowering plants. The central nucleus is the female gamete and those to either side of it are called the synergids.

卵器：在大多数显花植物的胚囊中，位于珠孔端的三个单倍体核，其中卵细胞位于中央，两个助细胞分别位于两边。

Moreover,the othervariants,for example,single egg situated in far from micropyle part,double antipodaland antipodal replacement egg apparatus.

此外还观察到其他一些变异结构，如单卵异位、单卵双套反足细胞和反足细胞团取代卵器形成"假卵器"等。

There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.

通常胚囊中有8个核，卵器在珠孔端，由卵和两个助细胞组成；3个反足细胞在合点端，可能为胚胎提供营养；胚囊中央有2个极核，融合在一起形成最初的胚乳核。

Potentially polyembryonic megagametophytes at maturitycontain either a conventional 3-celled egg apparatus(92.6% of megagametophytes).or contain the supernumeraryeggs forming either a 4-celled (5.2%) or 5-celled(2.2%)egg apparatus.

二卵卵器中卵细胞和类卵细胞大都并列位于助细胞合点极上方；三卵卵器中，合点极两个卵细胞结构并行排列，其珠孔极侧下方是另一个卵细胞结构。

In the"poly-egg apparatus embryo sac",three egg-apparatuses are the majority which canbe further divided into three subtypes,namely,"5-2-1"type,"6-2-0"type and"5-3-0"type,based on the position of antipodal cell.

三卵卵器结构胚囊&依反足细胞的位置又可分出&5-2-1&型、&6-2-0&型和&5-3-0&型等三种亚类型。&

Moreover,the othervariants,for example,single egg situated in far from micropyle part,double antipodaland antipodal replacement egg apparatus.

此外还观察到其他一些变异结构，如单卵异位、单卵双套反足细胞和反足细胞团取代卵器形成&假卵器&等。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。