查询词典 pollen plate

There are nine bivalents in pollen mother cells at late diplotene or early diakinesis, and the homologous chromosomes essentially arrange on the equatorial plate at late metaphase Ⅰor early anaphase Ⅰ, then the two homologous chromosomes of each bivalent separate from each other and move to two opposite poles drawn by spindle fibers.

在减数分裂双线期末或终变期初，可以观察到9个二价体，在中期I末至后期I初，同源染色体基本排列在赤道板上，然后在纺锤丝的牵引下二价体的两条同源染色体分开，分别移向两极，每一极有9条染色体，从而确认该属植物的染色体基数为x=9。

Results showed that the pollen abortion of female flowers occurred at the meiosis stage of microspore caused by the unnormal tetrads with uncomplete formation of cell plate.

该文以美国肥皂荚雌雄株上不同发育时期花蕾或花为试材，从实体解剖和组织细胞学角度对其性别分化过程进行了比较系统的研究。

There were a large numberof ppts located in the pollen wall during pollendevelopment (Plate II-6), suggesting that ATPaseis necessary for the construction of pollen wall.

在真核细胞中，除了线粒体和叶绿体ATP酶的功能是合成ATP外，其余部位ATP酶是水解ATP以获取能量的代谢酶(Pederson和Carafoli1987)，在生物体细胞内广泛存在。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。