多倍体的

The results indicated that allopolyploid species had changed greatly during evolutionary history compared with their ancestral diploid species.

实验结果说明了在基因组进化历史中，异源多倍体物种与二倍体祖先种相比发生了很大的变化。

In present review, focusing on the low-copy nuclear genes, we summarize the appli-cation of these genes in the phylogenetic reconstruction of allopolyploid plants and bring forward some critical issues in this field.

以低拷贝核基因为主线，概述了其在多倍体植物系统发生中的应用和相关注意事项，并对其在多倍体植物中的表达变化及其分子机制进行了探讨，系统地介绍了国际上相关领域的研究成果和最新动向。

Apomixis,wide compatibility,allopolyploidization were used to select allopolyploid rice and enlarge its range of inheritance and variation,and increase its output,quality and resistance to disease and pest by a big margin.

通过无融合生殖、广亲和、异源多倍体化的利用，选育异源多倍体水稻，增加它的遗传变异范围，大幅度提高水稻的产量、质量和抗性。3。

Of the genetic diversity between diploid and autopolyploid watermelon.

西瓜二倍体及同源多倍体遗传差异的AFLP分析。

Compared with the diploidy, the morphology and leaves stoma had changed, its leaves became thicker , more coarse , and leaves stoma became significantly bigger.

同时获得一定的变异材料，与正常二倍体相比，其叶片变粗，生长迟缓，气孔器变大，初步鉴定为多倍体。

With diploid, multiploid medicinal plant has the characteristics of giantism, which express in roots, stems, leaves, flowers and fruits

药用植物多倍体与二倍体相比具有根，茎，叶和花果的巨型性，抗逆性强，次生

Autopoly-ploids may arise from the fusion of diploid gametes that have resulted from the NONDISJUNCTION of chromosomes at meiosis.

同源多倍体通常可能来自在减数分裂过程中染色体不分离导致的二倍体融合。

Allopolyploidy A type of polyploidy involving the combination of chromosomes from two or more different species.

异源多倍体：两种或两个以上的不相同的物种杂交，杂种经染色体加倍形成的多倍体类型。

If such gametophytes produce fertile gametes, the resulting sporophyte is then tetraploid, and large polyploid series may subsequently be developed.

如果这种配子体能够产生可育的配子，那么形成的孢子体通常是四倍体，这样就可以得到大量的多倍体。

In this paper, the male reproductive system of this species was investigated by light microscopy, and electron microscopy, and the tetraploidy embyros of the prawn were induced by heat shock treatment.

本文应用组织学、电子显微镜、细胞遗传学及多倍体诱导技术对日本沼虾雄性生殖系统、染色体及核型、多倍体产生的条件等进行了比较深入的系统研究，对于解决人工授精难题和培育出品质优良的养殖品系具有重要意义。

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