micropyle

美 ['ma?kr?p?l] 　英 ['ma?kr?p?l]

• n.【植】珠孔；卵孔；【動(dòng)】卵(膜)孔
• 網(wǎng)絡(luò)卵膜孔；精孔；有個(gè)精孔

詞形變化

復(fù)數(shù)：micropyles  

英漢解釋

n.	1. 【植】珠孔;卵孔 2. 【動(dòng)】卵(膜)孔

英英解釋

n.	1. a small opening in the covering of the ovule of a plant through which the pollen tube passes prior to fertilization 2. a small pore in the membrane of an insect egg that allows sperm to enter and fertilize the egg

例句

At the center is a minute opening, called a micropyle, through which the sperm enters the egg.

它的中央有個(gè)微小的開(kāi)口，稱(chēng)為卵孔，精子通過(guò)這個(gè)孔進(jìn)入卵內(nèi)。

After fertilization through the micropyle, the zygote turned into dormancy status without certain time phase.

成熟胚囊經(jīng)珠孔受精后，合子休眠，休眠時(shí)間不確定。

In third stage, at maturing of the embryo sac, pollen tubes grow directionally toward micropyle into embryo sac.

朝珠孔定向生長(zhǎng)階段，胚囊成熟時(shí)，花粉管朝珠孔定向生長(zhǎng)進(jìn)入胚囊。

Porogamy The usual method of fertilization in angiosperms in which the pollen tube enters the ovule by the micropyle. Compare chalazogamy.

被子植物通常的受精方式。花粉管通過(guò)珠孔進(jìn)入胚珠。比較。

In radicle areas, there are palisade cells and a lucuna which located above micropyle and formed via knockdown parenchyma cells .

胚根區(qū)有柵欄狀細(xì)胞，珠孔區(qū)以上有薄壁細(xì)胞解體后形成的斷裂層。

On this butterfly egg, the lacy pattern marks the micropyle, where sperm enters.

在這種蝴蝶卵上，花邊圖案表示精子進(jìn)入的卵孔。

micropyle Opening in egg capsule through which spermatozoa enter.

卵孔在精子進(jìn)入過(guò)打開(kāi)的卵鞘。

micropyle formed by inner integument or by both integuments.

珠孔由內(nèi)珠被或者兩層珠被形成。

There the sperm must find and swim through an opening at one end of the egg, the micropyle.

精子必須尋找到卵，并從一端的珠孔（micropyle）游入其中。

Developmental Morphology of Obturator and Micropyle and Pathway of Pollen Tube Growth in Ovary in Phellodendron amurense (Rutaceae)

黃檗（蕓香科）的珠孔塞和珠孔的形態(tài)發(fā)育及花粉管在子房室中的生長(zhǎng)路徑

The central cell located at the embryo sac central committee, 2 polar nuclei approaches the micropyle end the egg cell;

中央細(xì)胞位于胚囊的中央，2個(gè)極核靠近珠孔端的卵細(xì)胞；

Building of Mathematical Model of Unusual Structure on Teleost's Micropyle

真骨魚(yú)卵膜孔奇異結(jié)構(gòu)的數(shù)學(xué)建模

Helps cell's big vacuole located at to gather an end, but egg cell's big vacuole located at micropyle end;

助細(xì)胞的大液泡位于合點(diǎn)端，而卵細(xì)胞的大液泡位于珠孔端；

ovule 1, pendulous, anatropous, micropyle closed;

胚珠1，倒生，珠孔關(guān)閉；

ovules 2, rarely 1 per locule, pendulous from apex, anatropous with abaxial raphe and micropyle facing upward;

子房每室2（很少1）胚珠，從頂端下垂，倒生，背面有種脊，珠孔向上；