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nucellus相关的网络例句

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与 nucellus 相关的网络例句 [注:此内容来源于网络,仅供参考]

In angiosperms, a diploid embryo may develop from a cell of the nucellus or chalaza; this is also apospory.

在被子植物中。二倍体的胚胎可以从珠心或合点的细胞发育而来,这也可以被称为无孢子生殖。

A minute structure in seed plants,containing the embryo sac and surrounded by the nucellus,that develops into a seed after fertilization .

胚珠种子植物的一个小的结构,含有胚囊并被珠心所包围,施肥后长成种子受精的产物是杂合子。

About 12 months earlier, the pollen grain germinated, producing a pollen tube that slowly digested its way through the tissues of the nucellus toward the developing megagametophyte.

大约 12 年之前,花粉谷粒发芽,产生慢慢地经过向发展中的 megagametophyte 的 nucellus 的薄的纱织品消化了它的方法的花粉管。

At its micropylar end, the nucellus is slightly suppressed.

在它的 micropylar 结束, nucellus 些微地被镇压。

Shortly after the pollen grain comes in contact with the nucellus, it germinates to form a pollen tube.

在不久之后,花粉谷粒用 nucellus 进来连络,它发芽形成花粉管。

Lthough a low frequency of abnormal growthof nucellus was observed,no embryo originating from nucellus cell and integumentwas found.

PⅣ珠心组织出现低频率的异常生长现象,但未观察到由珠心细胞发育形成的不定胚。

The ovule of development is the one nucellus that make a group at first organization, because basilar segmentation is rapidder and form or two bags by the layer, bead by , other nucellus the organization laps inside and next alveolus stays in one aspect of the matter, bead aperture .

发育的胚珠最初是一整团珠心组织,由于基部的细胞分裂较快而形成一层或两层包被层—珠被,将其他珠心组织包裹在内并在一端留下一个小孔—珠孔。

As the pollination drops evaporate, they contract, carrying the pollen grains through the micropylar canal and into contract with the nucellus.

当做授粉下降蒸发,他们缩短,经过 micropylar 运河携带花粉谷粒和进入契约之内以 nucellus。

After zygote dividing,the degeneration of nucellusgains the upper hand,and almost all nucellus cell disappear in 4-5 days after flowingexcept for the most outside nucellus.

合子分裂以后则以退化为主,到开花后4-5天,珠心组织除了表皮细胞外,其他几乎都解体了。

Thpetum is the gland cell type. The pistil has two carpels, the ovules belong to straight ovules with bitegmic;77% nucellus stoped development before from the archesporial cell and disappear and 23% nucellus atrophy .so the flower cannot grow seeds.

安祖花的雌蕊是由2 心皮组成,胚珠为直生胚珠,双珠被,77%珠心细胞在胞原细胞形成之前停止发育,并且逐渐解体消失,23%珠心细胞发生萎缩,导致雌蕊败育。

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