查询词典 pollens

The results showed that the pollen grains of wild Rosa rugosa were prolate or perprolate, and their equatarial view was long ellipse, long ellipse leaning toward rectangle or ellipse leaning toward spindle and the polar view was 3-labed-rounded, the two poles were plane or embowed. They all had 3-colposates which annularly distributed in equal space, and the pollens belonged to N3P4C5 model.

结果表明：野生玫瑰的花粉粒为长球形或超长球形，赤道面观长椭圆形、长椭圆形偏矩形或椭圆形偏纺锤形，极面观三裂圆形，两极平截形或圆弧形，具三孔沟，以等间距环状分布，属于N3P4C5型花粉。

Moreover,20 to 35% of the 2n pollens induced byColchicine developed anomalously,which also affected the effects of triploid breeding.

此外，秋水仙诱导产生的2n花粉中，还有20~35%发育表现异常，也会对三倍体得率产生较大的影响。

The Brownian movement of pollens also shows the fractal characteristics.

花粉的布朗运动轨迹也具有分形特征。

This paper briefly describes the progress in cytoplasm reorganization, dynamics of wall callose, starch granules and organelles in pollen grains, the tapetum development, specific genes, asymmetric division and cell fate determination in developing pollens. Some problems and future research directions are pointed out in this review.

本文针对花粉发育过程中的细胞质改组；胼胝质壁、淀粉粒和细胞器的动态变化；绒毡层的发育；花粉发育特异基因；以及不对称分裂和细胞命运等几个生物学问题的研究进展作了简要综述，最后还提出了一些研究展望。

This paper briefly describes the progress in cytoplasm reorganization, dynamics of wall callose, starch granules and organel les in pollen grains, the tapetum development, specific genes, asymmetric division and cell fate determination in developing pollens. Some problems and future research directions are pointed out in this review.

本文针对花粉发育过程中的细胞质改组；胼胝质壁、淀粉粒和细胞器的动态变化；绒毡层的发育；花粉发育特异基因；以及不对称分裂和细胞命运等几个生物学问题的研究进展作了简要综述，最后还提出了一些研究展望。

There was noevident cause-effect relationship between the formation and theamount of callose and the recognition reaction of theincompatibility.A great deal of ester was secreted.from pollenfuurow in 30 minutes after pollination,and the ester covered stigmaand pollens.The secretion sustained about two hours.

用扫描电子显微镜在授粉后间隔不同时间跟踪观察了亲和性授粉和不亲和性授粉的花粉与柱头相互作用的特征和特性，观察结果发现，在授粉30分钟内，花粉粒开始从花粉沟向外分泌大量脂类物质，覆盖柱头和花粉粒，分泌作用大约持续2小时结束。

These results show that codA gene cloned from E. coli can express specifically in the anther of both monocotyledon and dicotyledon plant species upon induction of 5-FC, and the in vivo expression product of the gene can transform the 5-FC used externally into 5-FU, which leads to all or partial inactivity of anthers and/or pollens.

以上结果表明，codA基因在单子叶植物和双子叶植物花药中的特异性表达，能将外用的5-FC在体内转化为5-FU，导致花药或花粉的部分和全部失活。

Tetraploid plants exhibited sighificant difference in morphology of flowers,pollens,stomates,shape and size of seeds and fruits comparted with the diploidy.

四倍体植株在花冠、气孔、花粉、种子和果实的形态和大小方面均与二倍体植株表现出明显的差异。

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。

Yunnanensis. The pollens of dehisced anthors of flowering P. polyphylla plants was slightly painted on the slide glass, the activities of P. polyphylla pollens were determined resp. by iodine-potassium iodide dyeing method (I2-KI), triphenyl tetrazolium chloride staining method, aceto carmine dyeing method and fluorescein diacetate method with a little improvement.

方法］将滇重楼开花植株裂开花药的花粉轻轻涂抹载玻片上，分别用碘－碘化钾(I2-KI)染色法、氯化三苯四氮唑染色法、醋酸洋红染色法和略有改动的荧光素二醋酸酯法对滇重楼花粉活力进行侧定。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。