查询词典 polyploidy

Together with other lines of evidence, we propose that polyploidization is still an ongoing process in grasses of polyploidy origins.

参照其它类群演化式样，提出多倍化仍然在禾草的多倍化起源方面起作用。

And in this study, the methods to induce polyploidy Photinia by adding colchicines solution of different concentration combined different treatment period to the tip of the seedlings was systematically studied.

石楠多倍体诱导研究以播种的石楠幼苗为材料，采用滴液的方法用秋水仙素水溶液处理石楠幼苗的生长点，对不同的处理方式、处理浓度和处理时间的多倍体诱导效果进行了较为系统的研究。

Chromosome number also gives an indication of polyploidy, where numbers vary by exact multiples between related species.

当多倍性现象发生时，物种的染色体数目是原来的整数倍。

This is a sound principle, though there may be rare exceptions: polyploidy in plants is common, and the symbiosis of micro-organisms that formed the eukaryota is a more exotic example.

这是一个合理的原则，但也可能有些罕见的例外：植物出现多倍体很常见，但微生物共生形成真核生物是一个比较奇特的例子。

For the first time in the world, and they could be precious materials used in further polyploidy breeding to develop new variety with high yield and high medicinal ingredient content.

本研究不仅创新了甘草属种质资源类型，并为开展多倍体育种、选育出产量高且药用成分含量高的优良品种奠定了物质和技术基础。

Recent years have witnessed efforts and progress in exploring the possible mechanisms by which these seemingly intangible hurdles of polyploidy may be ameliorated or eventually overcome.

近些年来开展的大量研究，对多倍体应对上述挑战的机制进行了探索。

We found that EBNA2 can compromise mitotic spindle checkpoint and cause polyploidy in HEp-2, U2-OS and BJAB cells.

我们也发现EBNA2可以在HEp-2、U2-OS、BJAB等细胞中干扰有丝分裂纺锤丝检查点，并且造成多套体。

The phenomenon of polyploidy and aneuploidy exists in the Genus, in which there are polyploid complex.

对19个分类群作了核型观察，其中16个分类群作了组型分析，结果表明各分类群间核型差异显著，该属普遍存在着多倍性和非整倍性现象，并有多倍体复合体类群存在。

Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.

多倍性常被当作引起在同一地区并存的物种发生物种形成事件的一种机制。

To establish the efficient in vitro regeneration system and polyploidy induction system, the effects of hormones in media on shoot regeneration from leaves of plants and the suitable methods of tetraploid induction were studied.

为建立寒富苹果高效的离体再生体系和多倍体诱导体系，以试管苗叶片为外植体，研究了培养基中激素对寒富叶片再生芽的影响及适宜的四倍体诱导方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐