查询词典 pollen

The flowering temperature, the vigor of stigma and pollen, the reason of self-hybrid degeneration in radishes was studied. The results showed that: structure of flower organ of malt sterile line in radish is different from its maintainers and normal plant (self-hybrid plant). Anther's development has three types: they are yellow degenerative corolla, abortive pollen, and half-abortive pollen. The flowering period of winter radish is 30～45 days. Flowering amounts a day is significantly positively related with temperature.

对不同类型萝卜开花温度、柱头和花粉活力、自交退化原因进行研究，结果表明：萝卜雄性不育系花器结构与保持系及正常植株有较大差异，花药发育有黄化、败育、半不育三种类型。

The experiment material is apricot and almond in this paper,passed TTC method to carried on examination the agnate pollen of vitality before pollination;after the investigation fruit set percentage,using of DPSv3.01 analyzed the date;the pollen tube behavior and bourgeon were observed by means of flurescence microscopy;the orthogonal design was used to optimize SSR amplification system of apricot hybrids in five factors at four levels respectively;making use of the new SSR-PCR system analyse the 50s hybrids.

本文以仁用杏及扁桃为试验材料，通过TTC染色法对授粉前父本花粉的活力进行了测定，运用DPSv3.01专业版数据处理系统软件对授粉后坐果率的调查数据进行了分析；利用荧光显微技术对花粉在柱头的萌发情况及花粉管的生长状况进行了动态观察；采用正交设计对仁用杏杂交苗SSR-PCR反应的5因素4水平进行试验；在新体系的基础上对50个杂交苗进行了分析。

We discuss the floral design and floral display which are adapted to increase pollination of anemophily: at the period of blossom, when up the slope of a hill, the concentration of pollen decreases at first and then increases, and the concentration of pollen on horizontalhave no significant difference.

山核桃花部构成和开放式样对提高传粉效率有积极意义；散粉盛期，山核桃花粉浓度自山脚向山顶呈现出随高度的增加而减少，相同海拔高度花粉浓度不存在显著性差异。

Therefore, from the flowering length, the effect of the climatic conditions and take the morphological structure, flowering length to the pollen of energy, energy, the seed vigor of pollen influence on some physiological indexes of determination to proven buckeye rate, low birth rate, low reason for improving the buckeye setting out the theoretical basis and reproduction rate, in order to improve the buckeye breeding take measures to meet the demand of the market.

因此，从花期长短，气候条件的影响等方面以及花的形态结构，花期长短到花粉活力，不同条件对花粉活力、种子活力的影响等一些生理指标的测定来探明七叶树结实率低、繁殖率低的原因，为提高七叶树的结实率、繁殖率找出理论依据，以便对提高七叶树的繁殖采取具体措施，满足市场的需求。还有这个标题：七叶树的生长开花结实特性初步研究谢谢了

We studied reproductive traits of this species such as phenology of capitulum, ratio of pollen to ovule, self-compatibility, pollen viability, visiting insects and germination potential of seed by experimental observation and bagging treatment in order to assess the association of these reproductive traits with invasiveness.

通过实验观察和人工控制套袋等方法，对其花序开花动态、花粉胚珠比、自交亲和性、花粉活力、访花昆虫和种子的萌发率等与繁殖相关的特征进行了研究，探讨了这些繁殖特征与入侵性的关系。

So it is suggested that the maintanance of appropriate Ca〓 level in the germinating pollen is essential for normal catabolism of lipids during pollen germination and tube growth, and CaM is also involved in these processes.

因此在萌动的花粉中保持适当的Ca〓水平对正常的脂类和脂肪酸代谢是必需的，CaM也参与此过程的调控。

Stamens 5, usually inserted at base of corolla tube and adhering to stigma head to form gynostegium; filaments usually connate to form a tube enclosing ovaries; anthers 4-celled (Periplocoideae and Secamonoideae) or 2-celled, often with a membranous apical appendage; pollen tetrads contained loosely on a spatulate translator with a basal corpusculum, or pollen united into waxy pollinia, each attached through a caudicle to the retinaculum between adjacent anthers to form a pollinarium, pollinia 2 or 4 per pollinarium.

雄蕊5，着生于花冠筒的基部，与柱头贴生，和柱头粘生，形成合蕊柱；花丝通常合生成管包围子房；花药4室(Periplocoideae和Secamonoideae)或者2室的，通常有一膜质的顶端附属物；四合花粉松散地着生于匙形的载粉器上，具有着粉腺体，或者花粉合生成腊质的花粉块，通过花粉块柄与系接于着粉腺上，每个花药有花粉块2个或4个。

Observations of pollen grains of the two regions can provide reference material for divergence and migration of Compositae, and for comparative studies of fossil pollen.

通过对这两个地区菊科植物花粉形态的观察有可能为菊科分化、迁移，以及化石孢粉的研究提供参考资料。

A number of pollen grains were deposited on alluvial fans and delta plains of North China Plain, and the concentration grains of pollen grains is more than 3000 per gram.

华北平原孢粉沈积相研究表明，洪积扇和三角洲平原区沈积的花粉较多，花粉沈积浓度多在3000粒/g以上。

Effects of ion beam implantation on pollen germination and pollen tube growth of Cedrus deodara were investigated by the laser confocal microscopy technique.

用激光扫描共聚焦显微技术研究了低能离子注入对雪松花粉管萌发和生长的影响。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。