查询词典 nucellus
- 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。
- 推荐网络例句
-
What are your goals and strategies for growth?
你的成长目标和策略是什么?
-
And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.
3:1 你要写信给撒狄教会的使者,说,那有神的七灵和七星的,说,我知道你的行为,按名你是活的,其实是死的。
-
"It is a testament to making sure unemployment compensation is available, making sure we are looking out for people who have lost their jobs," she said.
"这是个实证,证明我们必须确保人们都可以得到失业补偿,确保那些失去工作的人们得到照顾。"