The mature embryo sac has seven cells.
成熟胚囊内具七个细胞。
How does macrospore developed to embryo sac?
大孢子如何发育成胚囊？
The developed embryo sac has 7 cells containing 8 nuclei.
成熟胚囊为8核组成的7细胞胚囊。
All nucellar cells disappear, when an embryo sac is ripe.
属薄珠心，胚囊形成时珠心细胞全部消失。
Chalazal end of mature embryo sac is narrow and elongated.
成熟胚囊的合点端狭长。
The pollen tube entered into the embryo sac via one synergid.
花粉管经由一个助细胞进入胚囊；
There are 4 ~ 11 antipodal cells in embryo sac of Drusa type.
德鲁撒型变型胚囊中具有4 ~11个反足细胞。
Abnormal development was observed at tetrad and mature embryo sac.
在四分体和成熟胚囊时期观察到了异常发育现象。
The development of the embryo sac conformed to the Polygonum type.
胚的发育类型为柳叶菜型，核型胚乳。
These abnormalities would cause the abnormal structure of mature embryo sac.
这些异常可能最终导致多种结构异常成熟胚囊的形成。
The mature embryo sac contains an egg apparatus, a central cell and three antipodal cells.
成熟胚囊为蓼型胚囊，它包括卵器，一个中央细胞和三个反足细胞。
TyPes of endosPerm and embryo sac and structural feature of susPensor were also discussed.
还对沙打旺胚柄的构造特点，胚乳和胚囊的类型等进行了讨论。
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
大孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。
The mature embryo sac was one with five nucleus, i. e., egg apparatus and two-nucleus central cell.
成熟的胚囊是五核胚囊：由近珠孔端的卵细胞和两个助细胞以及两个中央极核细胞构成的。
Conclusion the success rate of medical abortion is related to gestational age and the diameter of embryo sac.
结论药物流产成功率与孕周、胚囊直径有关。
There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;
授粉后7-8天，在胚囊中见到二细胞原胚及数个胚乳游离核。
The mature embryo sac comprises an egg apparatus, a central cell with two polar nuclei and three antipodal cell.
成熟胚囊由印器，具二极核的中央细胞及三个反足细胞组成。
Synergid cells Two haploid cells located near the egg cell at the micropylar end of the embryo sac in flowering plants.
存在于开花植物胚囊内，是位于珠孔端的卵细胞两侧的两个单倍体细胞。
Development of megaspore and formation of embryo sac: the ovule has a layer of parietal cells at the sporogenous stage.
大孢子的发育及胚囊的形成：造孢时期，造孢细胞发育成大孢子母细胞。
The research for the embryo sac structure of early stable rice showed that 90.8% embryo sacs were normal and 9.3% were not.
对早稳型水稻成熟胚囊结构观察结果表明：正常蓼型胚囊占90.8%，异型胚囊占9.3%。
A mature embryo sac is composed of egg apparatuses (two synergids and one egg cell), central cells and three antipodal cells.
成熟胚囊包含卵器(由两个助细胞、一个卵细胞组成)，中央细胞及三个反足细胞。
The percentage of abnormal embryo sac in japonica, being 25.66% in average, was higher than that in indica, 19.34% in average.
籼稻与粳稻比较，总的趋势是粳稻异常胚囊的频率高于籼稻，其中粳稻平均为2566%，籼稻平均为1934%。
Of most two kinds of variant embryo sac, referred as poly egg apparatus embryo sac (53.3%) and double set of embryo sac (6.3%) were found.
其中主要的变异有两类，即多卵卵器胚囊(53.3%)和双套结构胚囊(6.3%)。
Path analysis was studied about 141 accessions involving pollen fertility, anther dehiscence index, embryo sac fertility and seed setting rate.
对141份野生稻的花粉育性、裂药指数、胚囊育性和结实率进行通径分析。
The study on pseudogamy property of wheat parthenogenesis is conducted by means of delaying pollination and observing embryo sac with microscope.
采用延迟授粉和胚胎学显微观察的方法，研究了黑麦和六倍体小黑麦花粉诱导小麦孤雌生殖的假受精特性。
The process of embryo sac formation and development in rice (cultivar IR36) was studied by the modified GMA semi-thin serial sectioning technique.
利用改进的GMA半薄连续切片技术对水稻品种IR36胚囊形成和发育进行了研究。
In present work, the development of anther, formation of pollen grain and development of ovule and formation of embryo sac in Ramie were observed.
本工作对苎麻花药的发育和花粉粒的形成、胚珠的发育和胚囊的形成进行了观察。
Megaspore tetrad is linear. the chalazal megaspore develops into an embryo sac of polygonum type. Hypostase and special integument tapetum exist in the ovule.
大胞子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育类型为蓼型，具有特化的珠被绒毡层和承珠盘。
Megaspore tetrad is linear. the chalazal megaspore develops into an embryo sac of polygonum type. Hypostase and special integument tapetum exist in the ovule.
大胞子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育类型为蓼型，具有特化的珠被绒毡层和承珠盘。
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