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胚珠着生于子房壁上。Ovules attached to the walls of the ovary.
每一子房室内约可产生160-240枚胚珠。An ovary locelle produced about 160-240 ovules.
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十一月中旬时胚珠原体凸出胎座表面。Ovule primordia occur from placenta in mid November.
“而你是啥子的胚珠呢?”伶俐之树慈祥地问阿狸。"what kind of seed are you?"the wisdom tree asks kindly.
营养物质通过珠柄传递到胚珠和种子。Nutrients pass through the funicle to the ovule and seed.
花粉经常会被风吹到其他树上，使它们的胚珠受精。Pollen is usually blown to other trees and fertilizes their ovules.
胚珠的异常常伴随着花药的异常而发生。The abnormal ovule often appear simultaneously with the abnormal anther.
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胚珠着生在二室或多室子房的中轴上。Ovules attached to the central axis of an ovary with two or more locules.
由WUS建立的信号体系还参与胚珠的发育。The signal system established by WUS is also involved in ovule development.
本文对拟南芥胚珠发育的分子调控机制进行了综述。This paper reviews the progress made in the investigation of ovule development.
只有少数林木可以从未授粉的胚珠发育成有活力的种子。Only a few forest tree species can develop viable seed from unpollinated ovules.
胚珠作为被子植物的有性生殖器官一直为植物学家所关注。As a sexual reproductive organ, ovules have received much attention by botanists.
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早熟无核葡萄杨格尔的胚珠可正常受精。The ovules of early-ripening seedless grape 'Youngle' can be fertilized normally.
子房2室，胚珠多列，花柱丝状，柱头舌状扁平。Ovarian 2 rooms, ovule much line, style filiform, post tongue shape is compressed.
大多数种子的形成是从胚珠受精开始的。Seed development in most instances commences following fertilization of the ovule.
初生合点吸器沿着胚珠的维管组织分支。The primary chalazal haustorium ramifies around the vascular tissues of the ovule.
本文首次报告了甜菜远缘杂交胚珠培养的结果。This paper reported the first results of ovule culture in beet wide hybridization.
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亲和的花粉管到达胚珠，在胚囊中裂开后释放出精细胞。Compatible pollen tubes reach the ovule where they burst and release the sperm cells.
一旦受精卵形成，胚珠就变成一颗种子，整个子房就变成一个水果。Once the egg is fertilized, the ovule becomes a seed, and the whole ovary becomes a fruit.
胚珠是研究器官形态发生和模式建成遗传分子机理的一个理想系统。The ovule has been used as an excellent model system to study morphogenesis and organogenesis.