Pollen morphology of Plumbaginaceae in China.

中国白花丹科花形态研究.

He developed an allergy to pollen.

他对花过敏。

Hay fever sufferers have a worse time when the pollen count is high.

花计数高时，枯草热患者日子就更不好过了。

The big,empty and abortive pollen grains are abserred at the stage of uninuclear microspore.

单核期小孢子出现壁发育不良和巨大及空花现象。

The outer wall (extine) of the pollen grain is often diagnostic (see pollen) and very resistant to decay.

花壁（花壁）通常为特异性并很难腐烂。

A mass of waxy pollen grains transported as a unit in many members of the Orchidaceae and Asclepiadaceae.

花块 Pollinium (pl. pollinia) 在许多兰科和萝藦科植物中，作为传单位蜡质花团。

Some large vacuoles appeared in the tapetal cells of the sterile anthers at the early uninucleate pollen stage.

在单核细胞早期，不育花四分体细胞中有较明大液泡出现。

The pollen morphology of 10 species of Scorzonera genus in the Mongolian Plateau was observed by scanning electronic microscope.

用扫描电子微镜观察了蒙古高原鸦葱属植物10个种花形态。

Pollen mother cells undergo meioses through simultaneous cytokinesis and give rise to tetrads of microspores, which are tetrahedrally arranged.

花母细胞行减数分裂，细胞质分裂属同时型，产生小孢子四分体，为四面体形。

(2) The pantoporate pollen of P. merrilliana shows that the species has vital taxonomical and evolutionary significance in Primula.

(2) 安徽羽叶报春散孔型花示其在报春花属中有重要意义和进化意义。

The similarity of its heteropolar 3- or 6-aperturate pollen to the 3-aperturate pollen of Eudicots might result from convergent evolution.

其异极3沟或6沟型花与真双子叶植物3沟花相似是趋同演化结果。

Generative nuclei The two gametic nuclei formed by the division of the generative cell in the pollen tube of angiosperms.

在被子植物花管中生殖细胞（应为雄原核译者注）分裂成两个配子核。

But fed with oakery pollen,indices as above were 9. 59 days, 37. 17 days, 3. 89 days,and 0. 86 per day,respectively.

而用青杠花饲养，其发育历期长达9．59天，雌雄成螨寿命缩短为37．17天和3．87天，日平均产卵量仅0．86。

The approaches for decreasing the gene flow include chloroplast transformation, pollen sterility, seed sterility, cleistogamy, apomixis, temporal control, and transgenic mitigation .

目前降低源基因扩散方法主要有叶绿体转化、不育、子不育、花受精、融合生殖、时性控制及转基因缓和等。

It indicated that the frequency of formation of the true pollen-derived plantletsw ere significantly low in the anther culture of B. napes.

这些结果说明在油菜花药培养中可能有一少数花植株形成。

Chromosome 12 of pollen mother cell of japonica trisomic rice (Oryza sativa L.) was successfully isolated using microglassneedles under the micromanipulator in this study.

首次以粳稻第12号三体为材料，采用玻璃针染色体微分离法，成功地分离到了水稻第12号染色体。

The exine of pollen wall is of different electron density, the nexine dense and the sexine, comprising tectum, bacules, and foot layer, relatively thin.

花壁壁分为层和内层，层包括覆盖层、基棒和基足层等三层，内层只包含一层。

As a result, this paper presents the 3D reconstruction segmentation display, and analysis results of pollen spore, chaperonin, head, cervical vertabra, tibia and carpale.

实现了花孢子、分子伴侣、以及头颅、颈椎、胫骨、腕骨三维重建分析测量与分割。

Pollen disease is a kind of hypersensitiveness occurring on the sensitive individuals to the allergic pollen, and is the most representative disease of allergic diseases.

花症是敏感个体对花一种超敏反应，在变态反应性疾病中最具代表性。

The Kizilsu palynofloras are characterized by the dominance of coniferae, abundance of schizaeaceous ferns and presence of primitive angiospermous pollen.

克孜勒苏群孢组合以松杉目优势、真蕨目海金沙科赫和原始被子植物出现为特征。