文献类型： 外文期刊
作者： Luo, Jiangtao 1 ; Zhao, Laibin 3 ; Zheng, Jianmin 1 ; Li, Yazhou 3 ; Zhang, Lianquan 3 ; Liu, Dengcai 3 ; Pu, Zongjun; 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Crop Res Inst, Chengdu 610066, Sichuan, Peoples R China
2.Minist Agr, Key Lab Biol & Genet Breeding Wheat Southwest, Chengdu 610066, Sichuan, Peoples R China
3.Sichuan Agr Univ, Triticeae Res Inst, Wenjiang 611130, Sichuan, Peoples R China
4.Sichuan Agr Univ Chengdu, State Key Lab Crop Gene Explorat & Utilizat South, Wenjiang 611130, Sichuan, Peoples R China
关键词： chromosomal variation; genome instability; somatic cell; synthetic wheat
期刊名称：GENOME （ 影响因子：2.166； 五年影响因子：2.474 ）
ISSN： 0831-2796
年卷期： 2020 年 63 卷 7 期
页码：
收录情况： SCI
摘要： It is known that both the number and the structure of somatic chromosomes can vary in early generation hexaploid wheats. The phenomenon is generally assumed to arise as a result of the meiotic instability characteristic of freshly created allopolyploids. Here, an analysis of the somatic karyotype of a set of 33 early generation synthetic hexaploid wheats has revealed that variation, taking the form of sub-chromosomal fragments and inter-chromosomal translocations, can also arise in somatic tissue. A possible explanation for the observations was that karyotypic instability in early generation hexaploid wheat probably occurs not just during sporogenesis, but also in somatic tissue. However, other factors such as the use of nitrous oxide during the experiments could also cause the chromosome variations, and additional experimentation would be required to determine the most likely.
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