授粉

A 500bp fragment was amplified, and then the PCR products were digested with restriction enzym BglII.

是伞形花科野生胡萝卜种胡萝卜变种的一、二年生异花授粉草本植物，是重要的鲜菜和加工原料，在世界各地广泛种植。

Temporally, rhizobium abundance in root and pericarp is obviously higher at pod-bearing stage than any other growth stage. Rhizobium abundance in various floral organs rapidly increases after pollination. During ovary-to-legume germinative process, rhizobium abundance in ovary wall and ovule increases logarithmically. Endogenous rhizobia are found in ovule only after fertilization, and rhizobium abundance in young seeds is higher than in fertilized ovule. This implies that endogenous rhizobia can be transported and colonized in early germinated seedlings.

在时间上，结荚期根、荚果皮内的根瘤菌数量明显高于其他时期；花内各器官在授粉后根瘤菌数量迅速增加；由子房向荚果发育的过程中，子房壁和胚珠内的根瘤菌数量随时间呈对数增长；胚珠在受精后即存在有内生根瘤菌，并且幼嫩种子内生根瘤菌数量远高于受精胚珠，证明内生根瘤菌能被转运并定殖在发育早期的种子中。

The cause of hindering the gynospore formation was short of boronin chestnut orchard,which led to the poor pollination and a decrease ofendogenous GA1/3, iPAs level and an increase of endogenous ABA level in ovary,which restrained the mother cell division of gynospore.The low level ofendogenous GA1/3,iPAs contents and the increase of endogenous ABA contentcaused a serious lack of reducing sugar,starch,protein and potassium in ovary,which led to a cease of young embryo development.

其中，大孢子形成过程的停滞是由于栗园B素缺乏，致使授粉不良和子房内源GA1/3、iPAS等含量下降，ABA含量上升，从而抑制大孢子母细胞分裂；幼胚发育停滞则是由于子房内源GA1/3、iPAS等生长类激素的上升启动受阻，继续处于低水平，ABA上升，使子房中还原糖、淀粉、蛋白质和K素积累受阻，造成营养严重缺乏。

Plants with hypogenetic stamina or ungerminated pollen were observed.

转基因植株自交不能结实，用转基因植株花粉对正常植株进行人工授粉，不能正常结实，表明转基因植株花粉是不育的。

As the pollen grains settle on the scales, many adhere to pollination drops, which exude from the micropylar canals at the open ends of the ovules.

作为在刻度上的花粉谷粒长椅，多数黏附在授粉下降，在 ovules 的开着结束从 micropylar 运河流出。

It was conducted to study the renewal method of multiflorous bean seed regeneration in genebank.

取材于有特殊经济价值、常异花授粉作物多花菜豆，研究基因库中种子繁殖更新方法。

Parasitic wasps are generally thought to have negative effects on the relationship between figs and their pollinators, but our results show that in fact they may help to keep a mutualistic relationship stable in the natural world.

寄生蜂，一般认为具有负面影响的关系无花果及其授粉，但我们的结果表明，在事实上，他们可能有助於保持稳定的互惠关系中的自然世界。

They think outhunt ozone in the air is keeping bees and other pollinators from smelling for flowers.

他们认为臭氧阻止蜜蜂和其他授粉者通过气味找到花。

The finding dovetails with the paleobotanical record, which shows that the flowering plants had just invented a veritable cornucopia of new fruits, flowers, gums and nectars with which to entice pollinators and seed dispersers.

这一发现正与古植物学记录相吻合，当时开花植物刚发展出十足丰盛的新式果实、朵、脂、蜜，藉此吸引授粉者和种子传播者前来。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进入羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。