在陆地棉小孢子发生过程中，相邻的减数分裂细胞壁中的细胞质通道是一个明显的特征。
The cytoplasmic channel in the wall of adjacent meiocytes was an obvious feature during microsporogenesis in Gossypium hirsutum.
Y 型不育系的小孢子发生过程基本正常。
雌配子体的形成可以划分为两个连续的过程，即孢子发生和雌配子体发生。
Female gametophyte formation can be divided into two consecutive processes, namely, the occurrence and female gametophyte spores occurred.
在凹叶厚朴大、小孢子发生和雌、雄配子体发育过程中存在部分败育现象。
The megasporogenesis and microsporogenesis and the development of their female and male gametophyte are partially abnormal.
结果表明：供体植株基因型是影响小孢子发生胚状体的关键因素，不同材料之间的诱导频率差异显著；
The results showed that genotype plays a decisive role on informing embryoid in microspore culture, the induction frequency of embryoids significantly difference among different genotypes As no.
用光镜和透射电镜的系统观察表明，小孢子母细胞间胞质通道的发育是棉花小孢子发生过程中最显著的特点之一。
Light and electron microscopy studies revealed that the cytoplasmic channel in the wall of adjacent meiocytes was an obvious feature during microsporogenesis in Gossypium hirsutum.
小孢子败育发生在四分体形成以后。
当配子在融合之前从亲本体中排出到有水介质时发生体外受精，这是孢子植物的特征。
External fertilization occurs when gametes are expelled into a watery substrate from the parental bodies before fusion; it is typical of spore bearing plants.
天竺葵的绒毡层属周原质团绒毡层，其原生质体侵入药室的时间发生在小孢子中大液泡开始形成的时期。
The tapetum of P. hortorum belongs to periplasmodial tapetum. The invasion into the locule occurs when microspore form large vacuole in its cytoplasm.
利用石蜡切片技术观察了埃及白睡莲的大、小孢子的发生，雌、雄配子体的发育，受精作用以及胚和胚乳的发育。
The megasporogenesis, microsporogenesis, female and male gametophyte development, development of embryo and endosperm were observed by using paraffin wax.
大孢子和雌配子体发生：孢原为一个细胞，它直接起大孢子母细胞功能。
Megasporogenesis and Female Gametogenesis: Archesporium is of one cell, it directly functions as macrospore mother cell.
一旦接触土壤表面，这条“鼻涕虫”就会发生另一种变形：大部分细胞变成一个硬柄，其余则的爬到顶端形成一个黏黏的孢子球。
Once it reaches the surface of the soil, the slug undergoes another transformation: Most of the cells turn into a stiff stalk, while the others crawl to the top and form a sticky ball of spores.
研究了秋水仙碱不同浓度和处理时间对甘蓝型油菜23个基因型离体小孢子胚胎发生的影响。
The effects of colchicine on in vitro microspore embryogenesis of Brassica napus were investigated using 23 genotypes.
反映大孢子发育和贮粉室发生的同步性。
This shows a synchronous development of megaspore and pollen chamber.
单核晚期小孢子经培养后，具胚状体发生能力的细胞中央液泡消失，积累淀粉，含丰富细胞器。
The central vacuole began to disappear, and cytoplasm with abundant organelle accumulated starch in some of microspores having embryogenic ability on transfer to culture.
目的研究非HIV感染者发生人肺孢子菌肺炎（PCP）的临床特点，感染的危险因素，治疗和预后。
Objectives To discuss the clinical parameters, risk factors, treatment and clinical outcomes of Pneumocystis jiroveci pneumonia (PCP) in HIV negative patients.
胚胎发生能力和再生植株转化率是游离小孢子培养技术的关键问题。
Improving microspores embryogenic ability and plantlet regeneration ability from microspore-derived embryos is the key of isolated microspores culture technique.
绝大部分花粉败育发生在单核小孢子期和二胞花粉晚期。
Most pollen abortion occurred at mononuclear pollen stage and late binuclear pollen stage.
通过花药漂浮培养，成功地诱导两个秋花椰菜基因型的小孢子胚胎发生。
Microspore embryogenesis from two autumn cauliflower genotypes was induced by anther float cultures on a modified B5 liquid medium.
吉祥草花器官发生发育过程中出现雌蕊群发育停滞现象，以及吉祥草在小孢子及胚珠发育过程中出现败育情况，可能是吉祥草属结实率低的重要原因。
The stasis phenomenon of gynoecium development occurred in floral organogenesis of Reineckia and the abortion of microspore and ovule may be the important causes of its low seed bearing ratio.
经固定染色后发现孢子发芽前后的形态发生变化，并能观察到弹出的极丝。
After fixed and stained, the shape of hatched spores changed compaired with that of unhatched spores and the long pole which extended out could be found.
结论卡氏肺孢子虫感染大鼠脾脏中微量元素发生了变化。
Conclusion P. carinii infection might play a role in the change of trace elements in the spleen of rats.
沙田柚雌雄配子体发育进程有明显差异，小孢子与雄配子体发生较早，持续时间较长；
There is an obvious difference in the developing process of female and male gametophyte.
结合生产实践推断，叉状炭角菌的侵染发生在覆土期，侵染源来自空气中的孢子，其萌发与鸡腿蘑菌圃的温度有关。
According to the production practice, the infection of X. furcata occurred during the casing period when X. furcata spores dropped on the casing and germinated at hig…
结合生产实践推断，叉状炭角菌的侵染发生在覆土期，侵染源来自空气中的孢子，其萌发与鸡腿蘑菌圃的温度有关。
According to the production practice, the infection of X. furcata occurred during the casing period when X. furcata spores dropped on the casing and germinated at hig…
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