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异配子的

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A fertilized female cell or zygote, especially one with thick chitinous walls, developed from a fertilized oosphere.

卵孢子一种受精的雌性细胞或合子,尤指异配生殖产生的一种休眠孢子

A fertilize d female cell or zygote,especially one with thick chitinous walls,developed from a fertilize d oosphere.

卵孢子一种受精的雌性细胞或合子,尤指异配生殖产生的一种休眠孢子

Either of two conjugating gametes that differ in structure or behavior,such as the small, motile male spermatozoon and the larger,non motile female ovum.

异形配子在结构或行为上不同的两个配合配子之一,如小的能动的雄性精子与大的不能动的雌性卵子

Which are divided into sporophyte developed special-shaped generational and generational shaped gametophytes developed.

其中又分为孢子体发达的异形世代交替和配子体发达的异形世代交替。

Self-pollination was brought as the essential reason for causing emptied seeds by former researchers. Based on those studies, potassium antimonate and electron microscopy were used to study the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules and morphological changes in certain cells undergoing programmed cell death from pollination to fertilization, and observation of histo-chemical changes during microgametopyte development was performed by paraffin section.

前人研究认为自交是华北落叶松产生空粒的主要原因,本论文在此基础,运用焦锑酸钾沉淀法配合电镜观察研究了传粉后到受精前异交控制和自交辅助授粉胚珠珠孔道内花粉的钙分布情况,及此过程中细胞程序化死亡超微结构的变化,并通过石蜡切片研究了华北落叶松传粉后到受精前雌配子体发育过程及细胞内含物的变化,以研究在受精前胚珠内是否存在花粉识别与选择系统,探讨钙信号传导和花粉与胚珠相互作用及细胞程序化死亡的关系。

A liquid crystal with pyridine group was synthesized from reactants of pyrogallic acid and isonicotinato by esterification reaction.

以焦性没食子酸和异烟酸为原料合成了带吡啶官能团的液晶配体。

A ring or group of thick-walled cells around the sporangia of many ferns that functions in spore release.

卵孢子一种受精的雌性细胞或合子,尤指异配生殖产生的一种休眠孢子

The sterile pollens were very concerned with non-equality of homologouschromosomes at two polars,and the difference of pollen yields among individuals werelikely related with disintegration of Tapetum in Prophase I.

其中败育花粉的产生与同源染色体的不均衡分配关系最为密切,而花粉产量的差异则可能是在减数分裂前期I时即发生绒毡层解体而造成的,其根源仍在于毛白杨染色体的异源性,此外易位、倒位等染色体结构变异和天然三倍体的存在也常常会加剧人们对毛白杨配子败育严重的印象。

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推荐网络例句

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

Oh, and I bought myself a new laptop," he said."

哦,我还给我自己买了一个新笔记本"他说。"