四倍的

The research results showed that there were no big difference in time of beginning fertilization between autotetraploid and diploid rice.

研究结果表明，同源四倍体水稻和二倍体水稻在发生受精作用的时间上没有存在着很大的差异。

The research results showed that there were no big difference in the time of beginning fertilization between autotetraploid and diploid rice.

研究结果表明，同源四倍体水稻和二倍体水稻在发生受精作用的时间上不存在很大的差异。

Their morphological and cytological characteristics were observed and identified, comparing with original autotetraploid watermelon.

2001年和2002年在四倍体西瓜品种790010、日み66、91E7和770007中各发现1份类似二倍体西瓜的种子，对这4份突变体进行了形态学和细胞学的观察和鉴定。

The changes of endogenous hormones in adventitious root formation in softwood cuttings of autotetraploid grape Muscat Hamburg were studied.

以葡萄同源四倍体玫瑰香和其二倍体玫瑰香母株的嫩枝插条为试材，研究了扦插生根过程中(0～18d)生根部位皮层的内源激素含量变化。

The formation and development of embryo sac in the diploid and its autotetraploid of rice cultivar IR36 was examined using Laser Scanning Confocal Microscopy.

利用激光扫描共聚焦显微镜术对水稻品种IR36二倍体及其同源四倍体的胚囊形成和发育过程进行了系统的研究。

Five concentrations of colchicines were used to treat aerial bulbil in garlic inflorescence for polyploid induction in vitro.

用5种不同浓度的秋水仙素处理大蒜花苞气生鳞茎进行多倍体诱导，发现在固体培养基上接种处理时毒害作用较小，四倍体的诱导率最高能达到66。

It is found that the hazard of colchicines to aerial bulbil is much less in solid media than in liquid media,and the highest induction rate of tetraploid garlic is 66.7% in solid medium.

用5种不同浓度的秋水仙素处理大蒜花苞气生鳞茎进行多倍体诱导，发现在固体培养基上接种处理时毒害作用较小，四倍体的诱导率最高能达到66.7%。

This paper also discusses the mechanism of occurrence of these aberrant embryos and discusses their relationship to diploid–tetraploid mosaicism.

文章也讨论了这种异常胚胎的发生机制，以及它与二倍体－四倍体嵌合体的关系。

ABSTRACT Objective: To determine polysaccharide contents in different intervarietal of diploidy and tetraploidy Banlangen, and to provide scientific evidences for developing and utilizing resources of Banlangen.

第二军医大学学报991015 摘要目的：测定二倍体的不同品系与四倍体板蓝根中多糖的含量，为综合利用板蓝根资源提供科学依据。

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。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。