文献类型： 外文期刊
作者： Liu, Miao 2 ; Zhao, Qiang 4 ; Qi, Feng 4 ; Stiller, Jiri 1 ; Tang, Shican 4 ; Miao, Jiashun 4 ; Vrana, Jan 5 ; Holusova, 1 ;
作者机构： 1.CSIRO Agr & Food, 306 Carmody Rd, St Lucia, Qld 4067, Australia
2.Sichuan Acad Agr Sci, Crop Res Inst, 4 Shizishan Rd, Chengdu 610066, Sichuan, Peoples R China
3.Sichuan Agr Univ, Triticeae Res Inst, Chengdu 611130, Sichuan, Peoples R China
4.Chinese Acad Sci, Natl Ctr Gene Res, 500 Caobao Rd, Shanghai 200233, Peoples R China
5.Ctr Reg Han Biotechnol & Agr Res, Inst Expt Bot, Slechtitelu 31, Olomouc 78371,
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
ISSN： 0040-5752
年卷期： 2018 年 131 卷 5 期
页码：
收录情况： SCI
摘要： Sequence comparison between spelt and common wheat reveals that the former has huge potential in enriching the genetic variation of the latter. Genetic variation is the foundation of crop improvement. By comparing genome sequences of a Triticum spelta accession and one of its derived hexaploid lines with the sequences of the international reference genotype Chinese Spring, we detected variants more than tenfold higher than those present among common wheat (T. aestivum L) genotypes. Furthermore, different from the typical 'V-shaped' pattern of variant distribution often observed along wheat chromosomes, the sequence variation detected in this study was more evenly distributed along the 3B chromosome. This was also the case between T. spelta and the wild emmer genome. Genetic analysis showed that T. spelta and common wheat formed discrete groups. These results showed that, although it is believed that the spelt and common wheat are evolutionarily closely related and belong to the same species, a significant sequence divergence exists between them. Thus, the values of T. spelta in enriching the genetic variation of common wheat can be huge.
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