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。
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。
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.
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.
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.
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.
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.
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.
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.
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.
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