polyploidy

1. Polyploidy is an important force of plant evolution.: 多倍化是促进植物进化的重要力量。

2. This research had important significance in studies on the formation of polyploidy fish and fish breeding.: 该研究在探讨多倍体鱼的发生及鱼类遗传育种方面具有重要意义。

3. In vertebrates, polyploidy tends to be lethal, but plants can do just fine with all this extra genetic material.: 脊椎动物中，多倍体往往是致死的，而多倍体植物却可以很好的存活。

4. The results indicate all the three loquat cultivars polyploid occurred genomic variation after polyploidy.: 表明三个枇杷品种的多倍体在多倍化后基因组均发生了变异。

5. Einkorn wheat is the donor species of polyploidy wheat. It is one of the important basic species of Triticum.: 一粒系小麦是多倍体小麦染色体组的供体物种之一，是小麦的重要基础物种。

6. Since the first tetraploid was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.: 从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。

7. Except a few species in which different polyploidy types were found, most species were very stable in chromosome number.: 除个别种内存在不同倍性的细胞型外，绝大多数种的染色体数目非常稳定。

8. Chromosome doubling for somatic cells and somatic hybridization via cell fusion are effective methods to create polyploidy.: 细胞融合和体细胞染色体加倍是获得杨树多倍体种质的有效途径之一。

9. Since the first tetraploid watermelon was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.: 从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。

10. The research on tissues culture lays the groundwork for further mutation and polyploidy breeding in Astragalus membranaceus(Fish. ) Bge. var. mongholicus(Bge. ) Hsiao.: 针对蒙古黄芪组织培养体系的研究，是诱变育种和多倍体蒙古黄芪育种的基础技术准备。

11. Polyploid formation has played a major role in the evolution of many plant and animal genomes, however, surprisingly little is known for us what happens to genomes in polyploidy.: 多倍体的形成在生物进化过程中占有重要的地位，但是我们对其多倍化后基因组究竟发生了哪些变化还知之甚少。

12. In this article, ways of polyploidy breeding, the identification of polyploidy, application of watermelon polyploidy, and the prospective of watermelon polyploid breeding are reviewed.: 文章概述了西瓜多倍体的产生途径、鉴定方法，西瓜多倍体育种的应用以及研究新动向。

13. Breeders have bred a great deal of new flower varieties by taking routine cross breeding, radiation breeding, tissue culture breeding, polyploidy breeding, and spaceflight breeding etc.: 人们通过常规杂交育种、辐射育种、组织培养育种、多倍体育种、航天育种等手段培育了大量的花卉新品种。

14. The results revealed the practicability of ion beam implantation technique in creating new polyploidy idioplasm, which could provide a new approach for searching the material with apomixis.: 本项研究在一定程度上证实了离子注入技术在创造多倍体水稻新种质申的实用性，这将为水稻无融合生殖种质材料的寻找提供一条新途径。

15. The polyploidy cell masses and the haploidy cells appeared in the tissue cultures will not result in the hereditary variability and the changes of the character in the original diploid species.: 组织培养中出现的多倍性细胞团和单倍性细胞，不会引起原二倍体物种的遗传性变异和性状变化。

16. The results suggested that obvious difference of chromosome number appeared among these Alnus species, even in the same species from different population, and spontaneous polyploidy might occur.: 本次研究结果表明桤木属物种间染色体数目有明显的差异，同一物种不同居群间也有差异存在，而且可能有自然加倍现象；

17. Feed crop breeding by polyploidy can enlarge the plant cellular size, so the plant has the thick and high stem, thick blade, and increases the content of protein, carbohydrate, vitamins and minerals.: 多倍体在饲料作物育种上可使植物细胞增大而导致植株茎粗、高大、叶片宽厚；并且使植株的蛋白、糖分和维生素及矿物质含量有较大的提高。

18. Feed crop breeding by polyploidy can enlarge the plant cellular size, so the plant has the thick and high stem, thick blade, and increases the content of protein, carbohydrate, vitamins and minerals.: 多倍体在饲料作物育种上可使植物细胞增大而导致植株茎粗、高大、叶片宽厚；并且使植株的蛋白、糖分和维生素及矿物质含量有较大的提高。

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