囊胚

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。"

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。

The other cells of the tetrad undergo degeneration. The mature embryo sac consists of an egg apparatus, a central cell, and 3 antipodal cells. The embryo sac is a monosporic Polygonum type. The zygote develops into a mature embryo going through proembryo, globular, heart, and torpedo stages.

胚囊发育类型为单孢子蓼型胚囊； 2胚的发育经过原胚、球形胚、心形胚和鱼雷胚等阶段发育为成熟胚；胚柄在球形胚时期最发达，但胚柄短小，只由3个扁平细胞组成，之后逐渐退化。

Toreniafournieri. has a naked embryo sac that protrudes from the micropyle into the cavity between the funiculus and placenta. As embryo sac is mature, the egg cell, the two synergids and about half the central cell are located outside the micropyle.

蓝猪耳在其发育的四核期，胚囊从珠孔端伸出，当胚囊完全成熟时，助细胞、卵细胞和大部分中央细胞均暴露于胚珠组织之外，是研究被子植物受精和胚囊发育的模式植物。

The double embryo sac is a new type of variation in rice,chartered with a large embryo sac inlaid with a small embryo sac,overlapping in theirmicropyle part,and with the eggs far from micropyle part.

双套结构胚囊是一种新发现的胚囊，主要特点是含有大小两个相嵌的胚囊和远离珠孔端的卵细胞。

In order to discuss the optimal condition in which GPMV proliferates in chicken embryo and its pathogenicity, GPMV of different titer was inoculated into 911-day chicken embryo and the allantoic fluid was harvested after 36, 48, 60, 72 and 84 h, the HA titer was measured as well.

为了探讨鹅副粘病毒在鸡胚中增殖的最佳条件及其致病性，将不同血凝滴度的鹅副粘病毒分别接种于9~11日龄鸡胚尿囊腔，收获孵化36、48、60、72和84 h的鸡胚尿囊液，测定血凝滴度。

Megaspore development and abortion of"Pingyi Tiancha"Compar-ing with regular developing megaspore of normal M.baccata,the megasporemother cellof"Pingyi Tiancha"could form mono-nucleus embryo sacby perhaps irregular meiosis,then most of sexual MES depauperatedand degenerated,finally aborted,or only a few further developed.Of asexualembryo sac,one or more large cells at the chalazal end of nucellus developed in-to one to more asexual embryo sac initials.After the competition between sexu-al embryo sacand asexual embryosac,most ovules only had one asexual embryo sac matured.

平邑甜茶大孢子的发育和败育与正常发育的山定子大孢子对比，平邑甜茶大孢子母细胞经减数分裂能形成单核胚囊，之后多数有性胚囊萎缩、退化而败育，只有极少数进一步发育；而无性胚囊则从胚珠合点端1个或多个较大的珠心细脆形成并首先发育为一个或多个无性胚囊原始体；经过有性胚囊和无性胚囊以及无性胚囊和无性胚囊之间的竞争，多数胚珠只有一个无性胚囊成熟。

The embryological studies of strawberry showed that the ovule of strawberry were hemitropous, the ovule had the obvious hypostace structure, the type of its embryo sac was Polygonum, the embryo sac was long and narrow, the type of development of embryo was the Geum type of the Asterad type, the endosperm was Nuclear type and the somatic embryo sacs happened The integral transparency technique combined with the technique of microdissection was used in this experiment The combination was an innovation in the techniques of section.

对草莓胚胎学的研究结果表明：草莓胚珠横生、胚珠具明显的承珠盘结构、胚囊发育为蓼型、胚囊狭长、胚胎发育为紫菀型水杨梅类型、胚乳核型、并有体细胞胚囊的产生。试验中采用了多种制片方法，其中将整体透明技术和显微解剖技术相结合的方法是在制片技术上的一次创新。

METHODS: Constructing the CAM model by exposing CAM on the shell subpoint between 2 vitelline veins and generating an air chamber after 5 days of incubated with aseptic incubator at 37℃.

将鸡胚消毒后，置于37℃无菌恒温箱中孵育5 d，在距胚头1 cm两条卵黄静脉之间的卵壳投影部位磨切暴露尿囊膜，制成假气室，用无菌滤纸封闭窗口，制成鸡胚尿囊膜模型，备用。

The embryo sac developed into functional megaspores only and no mature embryo sac was generated.

胚囊只发育到单核胚囊阶段，没有形成成熟胚囊。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。