ovules

胚珠
常用释义
胚珠

扩展信息

胚珠
子房中有一或多个卵形小体,即胚珠(ovules)。胚珠由一个珠心和包在珠心外面的一层或两层珠被所构成。

例句

Locule (locules) An air-filled compartment in an ovary in which the ovules develop.

子房中的空腔,胚珠在里面发育。

Ovules attached to the central axis of an ovary with two or more locules.

胚珠着生在二室或多室子房的中轴上。

在字典里的解说是植物雌蕊受精后,子房内成熟的胚珠。

花粉经常会被风吹到其他树上,使它们的胚珠受精。

他把有效的授粉阶段(EPP)描述为胚珠的寿命减去授粉和受精之间的时间段。

只有少数林木可以从未授粉的胚珠发育成有活力的种子。

The results were as follows: (3-days after anthesis) The ovules of the two cultivars began to grow . quickly.

结果表明:花后3天胚珠即开始迅速生长,共生长的最终大小依品种成熟期的不同而各异。

Ovules attached to a free - standing column in the center of a unilocular ovary .

胚珠着生在单室子房中央的与子房上部不相连的柱上。

胚珠多数花柱丝状雌蕊头状花序具一圆筒状的基部和反折的透明的褶边。

胚珠多数花柱丝状雌蕊头状花序厚,具膜质,圆锥状,短2裂的凸缘,先端。

Simultaneously, the mutant had malformation embryo sac and two ovules inthe same ovary, which implied that D functional genes were included.

同时突变体还伴随有胚囊、胚珠变异,不排除还有D组基因参与的可能。

ovules numerous; placentation axile. Styles 2. Capsule ovoid, globose, or ellipsoid, dehiscing longitudinally or irregularly; pericarp thin.

胚珠多数中轴胎座花柱2蒴果卵球形,球状,不规则的或椭圆形,纵向开裂或;

对龙眼胚胎发育过程中胚珠内核酸、蛋白质和淀粉含量的变化进行了研究。

胚珠多数果期花萼包围和边缘的脉生产进短尖头的长于蒴果,裂片具强壮的。

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。

ovules numerous. Stigma capitate. Fruiting pedicel pendulous.

胚珠多数柱头头状果梗下垂。

Ovary superior or inferior, placentation axile, rarely parietal, often many ovules per locule.

子房上位或者下位,中轴胎座,很少周壁胎座,通常每子房室很多胚珠。

Ovary superior; ovules numerous, within a globose placenta.

子房上位胚珠多数,在一球状的胎座内。

The undeveloped ovules in mature fruits of Bingtangcheng(Citrus sinensis) were cultured on five different media to induce embryogenic calli.

以冰糖橙成熟果实中的未发育胚珠为外植体,培养诱导胚性愈伤组织并进行植株再生。

ovules 2 per locule. Style filiform; pistil head thickened, with a short basal collar and apiculate apex.

每室2胚株花柱丝状雌蕊头状花序加厚,具一短基部叶颈和具细尖先端。

The expanded basal portion of the pistil that contains the ovules; the immature fruit.

雌蕊膨大的基部,内含胚珠;未成熟的果实。

Flowers of fly- pollinated species have much fewer ovules than flowers of moth- pollinated species.

蝇类传粉和蛾类传粉的植物花粉数没有一定规律。

ovules numerous. Styles absent or modified into abaxially projecting carpellary appendages.

胚珠多数花柱无或变为背面凸出心皮的附属物。

SI allows a plant to recognize and to reject self or self-related pollen, thereby preserving its ovules for outcrossing.

司允许工厂承认并拒绝自我或自我相关的花粉,从而维护其胚珠为异。

integument A layer surrounding the nucellus in the ovules of gymnosperms and angiosperms.

是裸子植物和被子植物的胚珠中包裹珠心的结构。

一种胚珠被包在子房里的植物;一种开花植物。

placentas parietal and equal in number to carpels, or basilar owing to reduction of ovules.

侧膜胎座和在心皮,或在数字上等于由于削减胚珠。

The research demonstrated that above 90% brown ovules were living (development embryo), and above 95% green ovules were abortive.

本研究发现:90%以上的褐色胚为活胚,95%的鲜绿色的胚已败育。

花药短于4毫米,纵向开裂;子房的胚珠具侧膜胎座近基部。

ovules numerous, with free central placentation, longitudinal 5-fascicled.

胚珠许多,具特立中央胎座式,纵裂5。