英语释义

1. the female gametophyte of a seed plant consisting of a thin-walled sac within the nucellus that contains the egg nucleus and other nuclei which give rise to endosperm on fertilization

片语

Polygonum type embryo-sac蓼型胚囊

embryo-sac fertility胚囊育性

embryo-sac cell胚囊细胞

gastrula[胚] 原肠胚；胚囊

embryo o sac胚囊

embryo-sac mother胚囊母细胞

megaspore大孢子；（种子植物的）胚囊

chick embryo amnoitic sac鸡胚羊膜腔

chick embryo yolk sac鸡胚卵黄囊

chick embryo air sac鸡胚气室

英汉例句

• 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。

• 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 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 pollen tube entered into the embryo sac via one synergid.

  花粉管经由一个助细胞进入胚囊；

• 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。

• 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。

• 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。

• 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%。

• The percentage of each kind of abnormal embryo sac was significantly different in each variety, suggesting that the abnormal phenomena were related possibly to the genotype of variety.

  同一品种内异常类型的频率也存在明显的差异，显示异常结构胚囊的形成可能与品种的基因型有密切关系。

• 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。

• 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。

• The concept of an alternation of generations can be extended to the flowering plants in which the embryo sac and pollen represent the much reduced famale and male gametophyte generations respectively.

  这个概念也可以运用在有花植物上，由胚囊和花粉各自表达雌雄配子体世代。

• 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。

• 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。

• 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。

• 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%)。

• The mature embryo sac is surrounded by en lothelium tapetum. It is composed or an egg apparatus, one central cell with secondary nucleus, and 1—6 antipodal cells.

  成熟胚囊被珠被绒毡县包围，由卵器、具次生核的中央细胞以及数目为1至6个反足细胞组成。

• 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。

• 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。

• 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。

• Then the uninucleate embryo sac forms 7-celled or 8-nucleate embryo sac of polygonum type following its three times division successively.

  合点端功能大孢子发育为单核胚囊，并经三次核的有丝分裂形成7细胞（8核）的蓼型胚囊。

• 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。