查询词典 parthenogenesis

It was suggested that the capacities of parthenogenesis and apogamy of rice were used to obtain stable lines in early hybrid generations.And several characteristics such as apomixis,cleistogamy,superior genes of qualities and resistance to disease and pest were combined and were used to search a new pathway of selecting high yield,superior quality and heteroresistance to diseases and pest,and lead to realize the purpose of fixing heterosis by apomixis.

利用水稻的孤雌生殖和无配子生殖能力，获得早世代稳定品系，建立快速育种方法，把无融合生殖特性与闭颖授粉、优质、抗性等特性结合探索高产优质多抗育种新途径，逐步实现利用无融合生殖固定杂种优势的目的。2。

This form of reproduction involving only one animal is called parthenogenesis. It is also known as asexual reproduction.

这种形态的繁殖只出现在一种叫做孤雌生殖的动物身上，也就是人们所知道的无性生殖。

This is the second documented case of asexual reproduction, or parthenogenesis, in a shark species.

这是第二个可证明鲨鱼具有无性生殖，或者称单性生殖能力的实例。

In addition, using RT-PCR to detect expression of centrin homogene during Urechis unicinctus spermatid deferentiation and early embryonic development. The result revealed that (1) expression of HsCEN1 homogene is present during spermatid defferentiation including spermtid and sperm, but not in adult tissues including body wall tissue,intestinal mucous memberane cells and cell in coelom succus;(2) expression of HsCEN1 homogene is not present in unfertilized oocytes but present in that of released polar bodies after fertilization and parthenogenesis oocytes treated with A23187;(3) expression of HsCEN1 homogene is present during early embryonic development including two-cell stage,multicell stage,gastrula to trochophora.

我们还用RT-PCR方法检测了Centrin同源基因在单环刺螠精子分化过程和早期胚胎发育过程的表达，结果显示：在单环刺螠精子发生过程中的精细胞、精子团、精子中都有表达，而在成体的体壁组织、消化道组织、体腔球中则没有表达；在未受精卵中没有表达，而在受精后释放极体的受精卵和经A23187孤雌激活的卵中则有表达；在单环刺螠的早期发育过程——二细胞胚胎、多细胞胚胎、原肠胚、早期担轮幼虫——中都有表达。

I saved her marriage by showing that her pregnancy was the result of parthenogenesis.

我告诉他们她怀孕是单性生殖从而拯救了他们的婚姻

Observation in this paper may be beneficial for understanding the basis in plant parthenogenesis and its values in maize breeding.

这些研究对于认识孤雌生殖育种的理论基础和应用价值具有重要意义。

However, reproduction is often by parthenogenesis since polyploid animals are often sterile.

然而，它们常常是通过孤雌生殖繁殖的，因为多倍体动物往往不育。

Most of them probablyoriginated from the zygote,and minority do from early parthenogenesis.

这些胚胎多数可能是经过受精发育而来的，极少数可能来自早期的单性生殖。

Instead parthenogenesis takes place: the egg is spontaneously activated and proceeds to normal embryonic development.

孤雌生殖，即卵自发地被激活并进入正常的胚胎发育过程中。

Potato haploid induction has significant meaning in potato breeding, It includes parthenogenesis and anther culture methods.

马铃薯单倍体诱导在马铃薯育种实践中具有重要意义，它包括孤雌生殖和花药培养等方法。

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。