查询词典 pollen

Study on the pollen fertility and the process of pollen formation and development in autotetraploid rice showed that the pollen fertility was high (78.33%), though many abnormities appeared in this process.

通过对5个品种的同源四倍体水稻花粉发育过程和13 个品种的花粉育性调查结果表明，同源四倍体花粉平均育性为78.33%，明显比二倍体（91.85%）低。

When pollen germinates on a stigma the growing pollen tubes deposit callose as small plugs, but if the plant is self-incompatible, tubes from its own pollen will deposit more callose, which then blocks the tube, preventing fertilization.

当花粉在柱头上萌发时，生长的花粉管产生少量胼胝质，但如果该植物是自交不亲和的，那么花粉管将产生比较多的胼胝质，可以阻塞花粉管来阻止受精。

In this experiment, 22 cucumber varieties were selected as test materials. The experiment analyzed the best method to mensurate cucumber pollen viability, the pollen viability and its influence factors, and the best low-temperature to distinguish the pollen germination rates of different varieties and compages of florescence temperature and germinarion temperature. We hope the results of experiment can offer theoretics and data to chilling tolerance varieties selection.

本试验共选取了22个黄瓜品种，研究了测定黄瓜花粉活力的最佳方法、不同黄瓜品种花粉活力及其影响因素，确定了区别不同品种花粉萌发差异的最适低温以及开花温度和萌发温度的组合，以及花粉萌发率与植株耐冷性的关系等方面，以期对耐冷性品种选育提供可以依据的理论和参考的数据。

The de-exined pollen, a kind of artificially treated pollen deprived of its exine and remaining only its intine, has special value in the studies on pollen biology as well as gene manipulation.

用人工方法脱去花粉外壁，仅被内壁覆盖的花粉称为脱外壁花粉，在花粉生物学研究和基因操作上有特殊的研究价值。

The relationship among calcium signal transduction, pollen-ovule interaction, and Programmed cell death was discussed from these studies, and the results are as follows:(1) Great difference was observed in the calcium distribution of pollens in the micropylar canal of self-pollinated and cross-pollinated ovules: a large quantity of calcium precipitates was located on the intine of self-pollinated pollen, while none on cross-pollinated pollen.

研究结果表明：(1)传粉后到受精前，自交和异交授粉胚珠珠孔道内花粉的钙信号表达存在很大差异，前者在花粉内壁上有大量表达，后者则没有。

Pollen will ameliorate the symptom for those patients who are little appetite, weak digestion and absorbing, macerate, chronic gastritis and gastric ulcer. After taking pollen for some time, those patients will feel better in every way. Pollen has such function mainly because there are many bio-reactive ingredients, such as germ-resisting substances and many kinds of vitamins, all of which have the function to ameliorate and nourish digestive system.

花粉对胃口不佳、消化吸收能力差、消瘦病人、慢性胃炎、胃疡等胃肠功能紊乱者有明显改善效果，在食用一段时间后，可增加食欲、促进吸收，增强消化系统功能，使精神好转，体重增加，此可能与花粉含有抗菌物质、多种维生素及X类等生物活性物质，有改善及修复消化道的功能有关。

When the pollen density of pollen donor exceeded the critical density, the gene flow frequency did not increased any longer, and the maximum gene flow frequency detected was equal to the outcrossing rate of pollen receiver in theory.

在其他因素都固定的情况下，如果花粉受体的异交率较高，那么到该花粉受体的基因漂移频率也相对较高。

The results show that: Each anther has four pollen sac, anthers from the epidermis, medicine room wall, the middle, composed of the tapetum, Mature middle and all the disintegration of tapetum; is symmetrical tetrad type, pollen is a 2 - cell-type pollen; in anther culture lei check standards should be time for about 3-4mm.

研究结果表明：每个花药具备4个花粉囊，花药由表皮、药室内壁、中层、绒毡层组成，成熟后中层和绒毡层都解体；四分体属左右对称型，花粉属2-细胞型花粉粒；在进行花药培养时取蕾标准应为3-4mm左右。关键词：铃兰；花药；解剖

Based on principle of pollen abortion, utilizing tapetum of anther cell, mitochondria of tapetum, callose well, process of cell meiosis during formation process of pollen, we adopt genetic transformation to create plant male sterility, such as, exogenous cytotoxin gene, chaperones, anti-sense RNA, degradation of callose ahead of time, disturbing information intercommunion between mitochondria and nucleolus and affected development of pollen sporule by bacteria.

根据花粉败育的原理，利用花药细胞绒毡层、绒毡层线粒体、胼胝质壁、细胞减数分裂过程等花粉形成过程中的不同环节，采取外源细胞毒素基因、分子伴侣、反义RNA技术、提早降解胼胝质、扰乱线粒体与细胞核之间的信息交流和细菌影响花粉小孢子发育等策略，使花粉不能正常形成，从而产生不育花粉，达到产生雄性不育的目的。

The results showed that the cell wall organization during anther development failed to divide into inner-wall, middle and tapetum normally, and not to provide material, energy and information transfer for the development of pollen mother cells, resulting in the occurrence of abnormal pollen mother cells separatist period; thus which could not form a normal pollen grains which led to abortion.

结果表明，不育花药壁组织在发育过程中，没有分化形成正常的内壁、中层及绒毡层，不能为花粉母细胞的发育提供物质、能量和信息的传递，造成花粉母细胞在减数分裂期发生异常，不能形成正常的四分体，因而未能形成正常的花粉粒而导致败育。

We stopped by the old fashion ice cream parlor Manhattan Beach Creamery for some refreshment. The "No Shoes, No Shirt, No Problem" sign on the wall epitomizes the beach lifestyle.

我们去商店区的一家老式冰淇淋店坐坐，墙上挂著「没鞋，没上衣，没问题」的牌子完全捕捉了海滩生活的随性及风格。

"If therefore", argues Bellarmine we can offer our prayers and our satisfactions in behalf of those detained in purgatory, because we are members of the great body of Christ, why may not the Vicar of Christ apply to the same souls the superabundant satisfaction of Christ and his saints--of which he is the dispenser?

" "因此，如果"，认为贝拉明（德indulgentiis ，十四）"我们可以提供我们的祈祷和我们满意的代表那些被拘留在炼狱，因为我们是成员的伟大基督的奥体，为什麼可能不是牧师基督适用於同样的灵魂满意的过剩是耶稣和他的圣人-他是在配药？