The relationships of the age of the plant and the mature period of fruit to the seed size of panax quinquefolius were researchel with the seed sieve,and observations of the sizes of embryo primordium were carried out in classified seeds and the derelopment in the presprouting of seeds.
应用过筛分级法研究了西洋参的母株年龄、果实成熟期与其种子大小的关系，观察了种子胚原基大小及其在催芽过程中的发育，提出了大于4。
Two cDNA libraries were constructed from microdissected 214 rice proembryos (2-3 d after pollination) and 121 just differentiating young embryos (3-5 d after pollination) respectively through RT_PCR technique.
由原胚向开始形成胚器官的分化胚过渡 ,必定有一系列特异表达基因的调控。
The zygote divides horizontally and develops into a basal cell and an apical cell which simultaneously divide horizontally and develop to a rectilinear proembryo with four cells.
顶端细胞和基细胞都进行横向分裂 ,形成直线状 4-细胞的原胚 。
Egg cells, zygotes and proembryos of Allium tuberosum Roxb were isolated using an enzymatic digestion.
用同样的方法也成功地分离了韭菜的合子和早期原胚。
The theory that inherited characteristics are transmitted from parent to offspring by germ plasm.
种质遗传遗传特征通过胚原基原生质由亲本传给后代的理论
The initial clustering of embryonic cells from which a part or an organ develops; primordium.
原基，芽基，胚基长出部位或器官的胚胎细胞群；原基
The proembryo from zygotic cell divisions may be divided into three parts: proper, hypoblast and suspensor.
玉米合子细胞分裂形成的原胚分为胚柄、基与胚体三部分。
primitive streak
原条[见于原肠胚]
Primordium (pl. primodia) A collection of cells that differentiates into a specialized cell, tissue or organ, e.g. the apical shoot and apical root primordia of the embryo.
原基：指能分化出特化的细胞、组织或器官的少数细胞，如胚芽原基和胚根原基。
endosperm mother cell
胚乳母细胞,胚乳原
It lasted for more than four months from initiation of the ovulate strobilus to formation of anatropous ovules.
从雌球果原基发生到胚珠分化历时4个多月。
Construction and Screening of the Anti-CEA Single Chain Antibody Gene
人癌胚抗原单链抗体基因的构建和筛选
High Frequency Regeneration of Protoplasts from Litchi Transgenic Embryogenic Calli;
荔枝转基因胚性愈伤组织原生质体高频率再生
Macromolecule BAC targeting vector for transfection of chicken embryo primordial germ cells
大分子BAC基因打靶载体转染鸡胚原始生殖细胞
The rudimentary bud of a plant embryo.
胚芽植物胚胎的基芽
Development of Holstein Cow Embryo Transgenic for Human а-collagen
携带人Ⅰ型а1原胶原基因荷斯坦奶牛胚胎的发育研究
Very few "seeds" weakly develop a radicle primordium when the seed germinate, but it is never seen that the radicle stretches out of "seed" - coat. The fibrous root system only consists of node - roots and the root end doesn' t develop into a taproot system all its life.
很少的种子在种子萌发时有胚根原基的微弱发育，但从末见胚根突出种皮。
Effects of Ang-Ⅱ on c-fos mRNA and pro-α_1[Ⅰ]mRNA of cadiac FBC in rat embryo
血管紧张素-Ⅱ对鼠胚心纤维母细胞癌基因和前胶原基因的影响
Amperometric Immunosensor for Carcinoembryonic Antigen Based on Poly(2,6-pyridinediamine) Membrane and Gold Nanoparticles
基于聚2,6-二氨基吡啶膜及纳米金修饰的癌胚抗原免疫传感器研究
The outer layer of a blastula that gives rise to the ectoderm after gastrulation.
外胚层囊胚的外层，在原肠胚形成之后生后外胚层组织
The sexually undifferentiated tissue in an embryo that becomes the penis or clitoris.
交接器原基胚胎中无差别的性组织，它会成长为阴茎或阴蒂
Study on the in Vitro Transfection and Transgenic with Embryonic Primordial Germ Cells;
鸡胚原始生殖细胞体外转染及其介导的转基因研究