籽银桂的胚囊发育类型为蓼型。
The development of embryo sacs of 'Ziyingui' belonged to polygonum type.
随着囊胚中细胞不断地吸收营养成长，胚囊发育到另一个阶段：胚胎。
As cells from the blastocyst take in nourishment, another stage of development, the embryonic stage, begins.
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.
大孢子四分体为线形，合点端功能大孢子发育成为蓼型胚囊。
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
当胚发育到4—6个细胞时，在胚囊珠孔瑞的游离核之间先形成细胞壁。细胞壁的形成是以自由壁的方式从珠孔端到合点端自外向内进行。
The free cell wall formation occurs first in the micropylar end when the embryo is 4-6 celled stage, then to the chalazal end and the center.
在四分体和成熟胚囊时期观察到了异常发育现象。
Abnormal development was observed at tetrad and mature embryo sac.
通过柑桔胚胎发育观察表明，授粉后50天左右，胚囊内仅有一个合子胚，未见珠心胚侵入胚囊，为单独分离合子胚培养的最好时期。
Observation of citrus embryo development showed that in 50 days or so after pollination there was only one zygotic embryo in the embryo sac, and nucellar embryo was not yet invaded.
大孢子如何发育成胚囊？
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。
In present work, the development of anther, formation of pollen grain and development of ovule and formation of embryo sac in Ramie were observed.
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 process of embryo sac formation and development in rice (cultivar IR36) was studied by the modified GMA semi-thin serial sectioning technique.
雌蕊形态和胚囊的发育过程不是扁桃亲和性强度存在差异的制约因子。
The pistil shape and the development course of gastrula are not the restriction factor which cause the difference of compatibility intensity in almond.
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。
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。
Development of megaspore and formation of embryo sac: the ovule has a layer of parietal cells at the sporogenous stage.
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