Chromosome changes after polyploidization in Triticeae

文献类型: 外文期刊

第一作者: Wang, Qiu-Xia

作者: Wang, Qiu-Xia;Gao, Ai-Nong;Yang, Xin-Ming;Li, Li-Hui;Wang, Qiu-Xia

作者机构:

关键词: chromosome changes;environmental factors;nucleocytoplasmic interaction (NCI);polyploidization;Triticeae;wheat breeding

期刊名称:JOURNAL OF SYSTEMATICS AND EVOLUTION ( 影响因子:4.098; 五年影响因子:4.735 )

ISSN: 1674-4918

年卷期: 2014 年 52 卷 6 期

页码:

收录情况: SCI

摘要: Chromosome changes are common in Triticeae, and they occur widely in natural and resynthesized polyploidy. Two important factors, nucleocytoplasmic interaction (internal) and the environment (external), can significantly influence chromosome changes after polyploidization. And chromosomal DNA changes play key roles during the initial formation, gradual stabilization, and establishment of polyploids. Hybrid breeding between common wheat and related wild species of Triticeae is an example of polyploidization, and many of the chromosome changes occurring after hybridization could be useful for improving wheat varieties. The famous chromosomal translocation 1BL/1RS that occurred after ancestral hybridization between wheat and rye is distributed widely among modern wheat varieties and makes a big contribution to wheat breeding; xiaoyan 6 is a similarly distant hybridization between wheat and Agropyron elongatum (Host) P. Beauv. in China. This chromosome translocation line was cultivated as the main variety in Shaanxi Province for 16 years and has also been used as a core parent for wheat breeding in China during the past 20 years because of its outstanding merits.

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