胚珠

以每胚珠鲜重计，DNA含量随胚珠的发育而逐渐增加。

DNA content per ovule would be gradually increased with the development of ovule .

小麦果皮绿色层中~（14）C标记同化物在胚珠内的分配与定位

Distribution and Localization of ~ ( 14 ) C-labelled Assimilates of Pericarp Green Layer Within the Ovule of Wheat Caryopsis

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 .

将外源DNA导入子房或胚珠中；

⑵ The introduction of exogenous DNA into ovules and ovaries ;

蝶兰胚珠的cDNA文库构建及其特异基因表达的研究

Construction of the ovule cDNA library and gene expression during ovule development in Phalaenopsis Orchid

IBA、GA3对无核葡萄胚珠培养的影响

Effect of IBA and GA_3 on Ovule Culture of Seedless Grapes

FlameSeedless葡萄胚珠、胚乳及胚发育与败育的研究

Development and Abortion of the Ovules , Endosperms and Embryos of Flame Seedless Grape

本文以银杏雌株的幼小胚珠为材料，对其体细胞染色体进行了Ag－NOR染色研究。

In this paper , the Ag-NOR of somatic chromosomes of young ovulum in Ginkgo biloba was studied .

M99上的外植体，胚珠内尤其是珠心组织中DNA、RNA含量增加，薄壁细胞内DNA含量逐渐减少；

In explants of M99 , DNA and RNA content increased in ovules , especially in nucellus .

结果显示，磷酸化酶mRNA在柱头、花柱、子房壁以及维管束中大量表达，而胚珠中除合点部位外表达很弱。

Phosphorylase mRNA was substantially expressed in the stigma , style , ovary wall and vascular bundle , but weakly in ovular tissues except chalazal portion .

用苹果（MaluspumilaMill）胚珠诱导愈伤组织并建立悬浮细胞系。

Calli were induced and suspension cell lines were set up from ovule of Malus pumila Mill .

因此，获得1个葡萄胚珠特异表达MADS-Box基因。

Therefore , we got an ovule-specific expressed gene . 3 .

以每克胚珠鲜重计，蛋白质含量变化与核酸的变化基本相似；以每胚珠鲜重计，蛋白质的积累基本上与RNA的积累同步进行。

Changes of protein content per gram of ovule resembled that of nucleic acid , and accumulation of protein per ovule was basically parallel to that of RNA .

采用CTAB-PVP法提取胚珠RNA，得到纯度高、完整性好的RNA。

The CTAB-PVP method was adopted to extract RNA of ovules and high quality RNA was obtained .

利用Y-RACE法进行棉花胚珠cDNA末端快速扩增

Rapid Amplification of Cotton Ovule cDNA Ends by Y-RACE

植物花器官的发育是由器官特异性基因决定的，这些基因包括ABC模型的A、B、C功能基因，同时还有决定胚珠发育的D功能基因和E功能基因。

Floral organ development is controlled by organ identity genes , including A - , B - , C-function genes of ABC model and SEP genes . Moreover ovules development is determined by D genes .

小草蔻（AlpiniahenryiK.Schum）胚珠倒生，厚珠心，双珠被。

The ovules of Alpinia henryi K. Schum are anatropous , crassinucellate and bitegmic .

因此，获得了这3个在无核、有核葡萄胚珠发育过程中差异表达的MADS-Box基因。

Therefore , we got three differentially expressed genes involed in ovule development . 4 .

取得的主要结果如下：1.以无核葡萄胚珠败育过程全长cDNA文库库液为模板，利用A-T克隆法得到7个MADS-Box基因。

The main results were as follows : 1 . Seven MADS-Box cDNA sequences were cloned from the ovule-abort cDNA library .

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 .

授粉后8~14h，花粉管在子房中生长并通过珠孔进入胚珠。自花粉萌发至花粉管长入珠孔大约需要1h。

8-14 hours after pollination , pollen tube grows in ovary and gets into ovule via micropyle . It is about 1 h from germination to the arrival at micropyle .

子房中部胚珠发生受精大约在授粉30h。

Ovules in middle part of ovary finish fertilization at 30h after pollination . 6 .

由于花药和胚珠中雌雄配子体发育异常的相似性，推测雌性不孕和雄性不育均是显性核不育基因Ms造成的结果，暗示着ms在雌性配子体减数分裂过程中均发挥着重要作用。

As the similarity of the abnormal development in anthers and ovules , suggesting dominant male sterile gene Ms causes the male and female sterility , it implied ms plays an important role in meiosis of the female gametophyte .

在败育胚珠中其含量及IAA氧化酶活性均显著高于正常胚珠，IAA水平则明显低于正常胚珠（P<0.01）。

In abortive ovules , p-HBA content and IAA oxidase activity were much higher ; IAA content was much lower than those in normal ovules ( P < 0.01 ) .

我们利用本研究的新方法检测了棉花胚珠和棉叶，并将该方法与以前的GA3的检测方法相比较。

The new method was compared with previous methods of separation and determination by measuring GA3 levels in the ovules and young leaves of Gossypium hirsutum .

C1株系绝大多数胚珠结构正常，部分胚珠能正常受精并进一步发育为球形、心形、鱼雷形及子叶胚。

The results of anatomise observation showed that the structure of most ovules was normal , and some developed to globular embryo , heart-shape embryo or torpedo embryo stage after fertilization .

在吐水时用花粉植物激素粗提液涂抹胚珠可使雌花在处理后5d继续生长，但在第10d亦达到峰值，花粉携带的植物激素不足以促进雌花的生长与坐种。

Female flower would continue to grow but reached its peak weight on the 10th day after guttation if it was treated with phytohormone extracts of pollen .

Ostryavirginiana（Betulaceae）的胚珠和胚囊发育及其系统学意义

Development of ovules and embryo sacs in Ostrya virginiana ( betulaceae ) and its systematic significance

经过用卡诺氏固定子房，系列酒精入水，25℃酶解2h，苏木精整体染色24h后取胚珠制片。

After passing through a series of alcohol and distilled water , the ovaries were treated in 2 % driselase aqueous solution for 2 hours at 25 ℃, and then dyed by hematoxylin for 24 hours .

叶生拟胚珠的形成期比正常胚珠滞后15d，而且在授粉期的叶生拟胚珠上始终未发现传粉滴的出现；

The ovule-like organ lagged behind the normal ovule for fifteen days at initial stage , moreover no pollination drop was found on the ovule-like organ .