原胚发育属柳叶菜型荠菜变型。
Proembryo development is of the Capsella-variation of Onagrad type.
应用微室饲养系统培养水稻早期原胚。
In vitro development of early proembryos and plant regeneration via microculture in Oryza sativa l.
三重胚的具有三层原胚层的。
授粉后8天，多数杂交原胚的细胞开始解体。
The degeneration of proembryo in crossing appeared in most cases 8 days after pollination.
在原胚及幼胚胚原细胞质中也呈现很弱的正反应。
The embryo initials and suspensor cells showed very weak Feulgen positive reaction in the proembryo and young embryo.
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。
There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;
原胚初期胚体出现背腹极性，腹面的细胞小，细胞质稠密，液泡较少；
During early proembryo stage, the dorsiventrality appears in the proper of the embryo. On the ventral side, the cells are small with dense cytoplasm and few vacuoles.
胚性细胞分裂产生两个细胞，进而分化发育成多细胞原胚、球形胚、心形胚及子叶胚。
Then embryogenic cell divided into two cells, which sequentially differentiated through multicell proembryo, globular, heart-shaped and cotyledonary embryo stages.
酶蛋白的最大含量在原胚阶段初为20.83%，以后至幼胚阶段急剧减少到4.9%。
Enzymic protein content decreases from the maximum at early phase of proembryo stage (20.83%) to the minimum at young embryo (4.9%).
本文围绕水稻未传粉子房培养时雌核发育原胚的起源问题进行了较详细的胚胎学研究。
This paper is a further research on the origin of gynogenic structures of rice which have been induced by the method of unpollinated ovary culture in our laboratory for several years.
牙齿是典型的上皮-间充质器官，由原口腔上皮和其下方的神经嵴来源的外胚间充质相互作用而形成。
Tooth is a typical epithelium-mesenchyme organ, which is formed through the mutual function between the original oral epithelium and epiblastic mesenchyme from the neural crest below.
牙齿是典型的上皮-间充质器官，由原口腔上皮和其下方的神经嵴来源的外胚间充质相互作用而形成。
Tooth is a typical epithelium-mesenchyme organ, which is formed through the mutual function between the original oral epithelium and epiblastic mesenchyme from the neural crest below.
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