查询词典 nucellus

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。

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。

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。

In the late of April of the second year, male inflorescences unbound and pollinated. When female inflorescences accepted the pollen grains, ovary development was increased in early May. With the development of either of the two ovule, funiculus, integument and nucellus were differentiated. Embryo sac mother cell came into being and the meiosis begins. Then fuctional megaspore developed into matured embryo sac that contain eight nucleuses. In the end of May, double fertilization generated.

次年，4月下旬，雄花序解螺旋散粉，雌花序开花授粉；5月上旬，雌花序授粉后，迅速增长，子房膨大，两个胚珠分化出珠柄、珠被和珠心，珠心中产生孢原细胞；5月中下旬，大孢子母细胞形成并减数分裂，功能性大孢子形成成熟的八核胚囊；5月底，发生双受精。

Paeoniaceae,a monomarphic family,has distinctive characters for its phylogeny in Angiosperm,such as:both of tapetum and microspore mother cell are homologous,and so are nucellus cell and macrospore mother cell;there are many macrospore mother cells.

芍药科Paeoniaceae为单属科，其系统发育具有一系列的独特性，在被子植物中是独一无二的。

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。

In hawkweedsa cell of the nucellus takes the place of the megaspore.

在山柳菊(山柳菊属 Hieracium)中一个珠心细胞取代了大孢子。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。