查询词典 pollen

And when Petrarch fell madly in love with his Laureen, she was a fair-haired nymphet of twelve running in the wind, in the pollen and dust, a flower in flight, in the beautiful plain as descried from the hills of Vaucluse.

还有，彼特拉克疯狂的爱上他的劳琳时，她正是一个十二岁的金发小妖；在沃克吕兹山脚下群花怒放的草原上（估计是指普罗旺斯，法国，译者注），风中奔跑着的她，就像一朵飞舞的花。

In this genus, the pollen grains are oblate spheroid with 3 colpi in polar view, and smoothy on the surface .

结果表明该属花粉粒多为近球形，具3沟，表面光滑。

This observation does not support the idea that the obturator mainly serves the function of mechanical guidance for the growth of pollen tubes.

我们不支持先前研究者关于珠孔塞主要充当对花粉管生长的机械作用的观点。

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。

These microscopic characteristics of pollen grain and stomata could be used as the evidence to identify diaploid spieces and hexaploid, octoploid spieces whose chromosome ploidies are hugely different.

结论］用花粉粒和气孔的一些微观特征作为鉴别二倍体和六倍体、八倍体等染色体组倍数相差较大的物种有一定的依据。

Pollen plants from octoploid triticale anther culture were propagated as clone linesand had been used as anther donors for further culture in two successive years....

由八倍体小黑麦花培所得的花粉植株再进行一次花培，在所获得的 C 类植株中就能选出花培效率达到八倍体小黑麦水平的个体。

Diploid species and hexaploid, octoploid species of triticeae had remarkable differences in micro-morphological characteristics of pollen grain and stomata. However, some differences between hexaploid species and octoploid species were not significant.

可见，小麦族二倍体物种与六倍体物种、八倍体物种在花粉粒和气孔的微观特征方面有明显差异，但六倍体和八倍体物种之间差异不明显。

Comparison of the micro-morphological characteristics of pollen grain and leaf epiderm among diaploid Thinopyrum elongatum, Elytrigia intermedia, common wheat and octoploid Tritielytrigia types were carried out by observation under scanning electronic microscope.

方法］通过扫描电镜对二倍体长穗偃麦草、中间偃麦草、普通小麦、和八倍体小偃麦的花粉粒和叶表面的微观形貌特征进行了比较。

The efficiency of octoploid triticale anther culture was practically onthe same level as that of common wheat,namely,2.5 green pollen plants per hundred an-ther.

八倍体小黑麦的花培效率同普通小麦一样，每百个花药可出2.5株绿苗。

S. This is the first time to report this pattern of pollen tube oscillatory growth in plants.

这种振荡生长方式在其它种类花粉管中没有报道。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。