文献类型： 外文期刊
作者： Wan, Hongshen 1 ; Yang, Fan 2 ; Li, Jun 1 ; Wang, Qin 1 ; Liu, Zehou 1 ; Tang, Yonglu 1 ; Yang, Wuyun 1 ;
作者机构： 1.Crop Res Inst, Sichuan Acad Agr Sci, Chengdu 610066, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Wheat Biol & Genet Improvement Southwester, Chengdu 610066, Peoples R China
3.Environm Friendly Crop Germplasm Innovat & Genet I, Chengdu 610066, Peoples R China
4.Sichuan Acad Agr Sci, Biotechnol & Nucl Technol Res Inst, Chengdu 610066, Peoples R China
关键词： synthetic hexaploid wheat; genetic improvement; application practices
期刊名称：GENES （ 影响因子：3.5； 五年影响因子：3.9 ）
ISSN：
年卷期： 2023 年 14 卷 2 期
页码：
收录情况： SCI
摘要： Synthetic hexaploid wheat (SHW) is a useful genetic resource that can be used to improve the performance of common wheat by transferring favorable genes from a wide range of tetraploid or diploid donors. From the perspectives of physiology, cultivation, and molecular genetics, the use of SHW has the potential to increase wheat yield. Moreover, genomic variation and recombination were enhanced in newly formed SHW, which could generate more genovariation or new gene combinations compared to ancestral genomes. Accordingly, we presented a breeding strategy for the application of SHW-the 'large population with limited backcrossing method'-and we pyramided stripe rust resistance and big-spike-related QTLs/genes from SHW into new high-yield cultivars, which represents an important genetic basis of big-spike wheat in southwestern China. For further breeding applications of SHW-derived cultivars, we used the 'recombinant inbred line-based breeding method' that combines both phenotypic and genotypic evaluations to pyramid multi-spike and pre-harvest sprouting resistance QTLs/genes from other germplasms to SHW-derived cultivars; consequently, we created record-breaking high-yield wheat in southwestern China. To meet upcoming environmental challenges and continuous global demand for wheat production, SHW with broad genetic resources from wild donor species will play a major role in wheat breeding.
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