多糖、脂类和蛋白质的消长变化与花粉发育过程中营养供应存在着密切的关系。
There is a close relationship between the change (increase or decrease) of polysaccharide, lipid and protein with the suppliment of nutrition during the development of pollen.
花粉发育过程做了超微结构观察。结果表明，在花粉母细胞细线和偶线期，核糖体数量减少、线粒体结构简化；
The results showed that the mother pollen cells presented decreased ribosome numbers at leptotene and zygotene stages, and simplified mitochondria structure;
本论文以正向遗传学的方法研究花药及花粉发育过程的基因功能，主要利用图位克隆的方法从拟南芥雄性不育突变体中克隆相应的基因。
In this dissertation we focused on the function of genes associated with anther and pollen development including map-based cloning of Arabidopsis genes from male sterile mutants.
对绒毡层解体过程孢粉素行为的有关事态及其与花粉发育的关系等问题进行了讨论。
The events of sporopollenin behavior during the process of tapetal disintegration and their relations to pollen development are discussed.
的花粉形态和水合特性及胚珠发育、传粉滴形成与传粉过程。
Pollen morphology and hydration, ovule development, formation of pollination drop and the pollination process of Taxus chinensis (Pilg.
小孢子发育过程涉及花药发育到花粉粒成熟过程中一系列基因的表达。
The expressions of a series of genes are involved in the anther and pollen development.
细胞学观察和扫描电镜结果表明，突变体花药发育过程中， 花药中小孢子外壁异常、破裂， 最后没有花粉形成。
The mutant has small siliques with no seed set. Cytological observation showed that during anther development, the microspores ruptured and no pollen grains formed in the mutant anther locules.
这些结果表明P 0491e01在花药发育后期花粉的成熟过程中起重要的调控作用。
Our results suggest that P0491E01 may play an important role during the late stage of anther development.
在成熟花粉中正常花粉只占45.5%，还有54.5%的花粉在发育过程中发生败育。
The percentage of normal pollen was only 45.5%, and the total frequency of pollen aborted during developmental process was 54.5%.
减数分裂过程中染色体行为异常的花粉母细胞约占10.28%；雄配子体发育过程中异常频率约为3.2%，败育主要发生在单核期。
In meiosis, the pollen mother cells that abnormally acted made up about 10.28% and the male gametophytes abnormally acted at a frequency of 3.2% and mainly aborted at uninucleate stage.
减数分裂过程中染色体行为异常的花粉母细胞约占10.28%；雄配子体发育过程中异常频率约为3.2%，败育主要发生在单核期。
In meiosis, the pollen mother cells that abnormally acted made up about 10.28% and the male gametophytes abnormally acted at a frequency of 3.2% and mainly aborted at uninucleate stage.
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