| 1. | Embryo has most commonly eight genetically identical haploid nuclei .
胚囊，普通具有8个遗传上相同的单倍体核。 |
| 2. | Starch grains present in the embryo sac and placenta are utilized by the embryo .
存在于胚囊和胎座中的淀粉粒为胚胎所利用。 |
| 3. | The blastocyst is then surgically introduced into the uterus of a foster mother .
然后通过手术把胚囊引进寄养母体的子宫内。 |
| 4. | Shortly after implantation the blastocyst wall, the trophoblast, consists of two layers of cells .
植入之后不久，胚囊的壁，即滋养细胞含有两层细胞。 |
| 5. | The embryo sacs observation is one of the main study method for embryology
摘要胚囊观察是植物胚胎学的主要研究方法之一。 |
| 6. | The female gametophyte is represented by the embryosac , the archegonia being absent
雌性配子体存在于胚囊中，颈卵器缺失。 |
| 7. | Bisporic embryo sac
双孢胚囊 |
| 8. | Frequencies of apomictic embryo sacs were the highest in winter and summer respectively in two years
两年中，无融合生殖胚囊出现的频率分别在冬季和夏季最高。 |
| 9. | It is concluded that embryo sac sterility was the main reason for highly stable seedless characteristic of lipeng no . 2 cultivar
因此，胚囊高度败育是丽? 2号产生无核的主要原因。 |
| 10. | Observation by paraffin section showed that lipeng no . 2 embryo sac mother cells were almost entirely degenerated during megasporogenesis
切片观察发现，丽? 2号胚囊母细胞在四核期已完全退化。 |
