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Morphological characteristics of some recent and fossil pollens of Liquidambar.

标题 枫香属现代的和某些化石的花粉形态特征。

Cytoplasmic male sterility is a maternally inherited character of failure to produce viable pollens, which was found in many plant species.

植物细胞质雄性不育是指植物不能产生花粉或产生的花粉无活力的一种母性遗传现象，这种现象在高等植物中普遍存在。

Pollens germinated readily 3 days after pollination and megaspore mother cells underwent meiotic division at about 50 days after pollination.

本试验主要分为两部分；花粉管生长及受精之观察：蝴蝶兰之子房和大孢子母细胞，於授粉后才开始发育。

Allergy sufferer Steve Melton does what he can to avoid exposure to spring pollens, but it's nearly impossible.

过敏症患者史蒂夫梅尔顿做什么，他能避免接触到春季花粉，但它几乎是不可能的。

Pollcn morphology of 11 Heracleum species was examined under LM andSEM. It is shown that pollens of these specics are all of retangular type andequatorial constricted type, with polar views of 3-splitted round, obtuse triangle ortrianglc. Interspecific variations exhibit in pollen size and exine exolamelle.

对独活属11种植物的花粉进行光镜和扫描电镜观察发现，本属花粉为伞形科中比较进化的矩形型和赤道收缩型；极面观3裂圆形、钝三角形、三角形；花粉大小及外壁纹饰在种间存在明显差异。

The study shows that Artemisia(6 191 granules) and Humulus(1 660 granules) are the major sources of allergenic pollens in Taiyuan city during summer and autumn. The peak period of airborne pollen drift is in accordance with the incidence of pollinosis.

为探明太原市中心地区夏秋季常见气传致敏花粉的种类、含量、花粉飘散规律及分布特点，指导临床对花粉症的诊断、治疗和预防，笔者于2008年7月～10月对太原市中心地区夏秋季气传致敏花粉进行了调查研究。

Ragweed pollen has become one of the major allergic pollens, so it should be eradicated to prevent pollenosis in the Qingdao area.

豚草花粉已成为青岛地区花粉症的主要病因之一，必须采取拨除豚草的有效预防措施。

Three group male sterile and maintenance lines of monogerm sugar beet as materials were used, we observed the biological characters of their buds, anthers and anther structure, and the development process of pollens by the methods of conventional Paraffin Slicer, Safranine Ai-Shi Haematine Crystal and Fast Green.

方法］以3对单胚型甜菜雄性不育系和保持系为试验材料，采用常规的石蜡切片方法，对花蕾和花药的生物学特性以及花药结构、花粉发育过程进行比较。

Sponge gourd and rape pollens from spikelets of natural anthesis were harvested and immediately spread onto pollen germination mediums with or without DHJA or MeJA of different concentrations.

为进一步探查茉莉酸类植物激素对花粉萌发的影响，研究二氢茉莉酸和茉莉酸甲酯对丝瓜和油菜花粉萌发的效应。

For studying the pollen xenia of plum, pollens of 5 different plum cultuvars including Bulin, Longyuanqiuli, Oishi Wase, Japanese plum and Changli 15 were used to pollinate Frinar plum respectively, and the effect in the current year on fruit quality was observed.

为研究李的花粉直感效应，选用了布林、龙园秋李、大石早生、秋姬、长李15李品种的花粉给黑宝石李授粉，以自然授粉为对照，观察其对当年果实品质的影响。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。