Construction of maize-teosinte introgression line population and identification of major quantitative trait loci
文献类型： 外文期刊
作者： Wang, Xin 1 ; Liao, Changjian 2 ; Wang, Xiaojun 3 ; Yang, Ruichun 1 ; Zhai, Lihong 3 ; Huang, Jun 1 ;
作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Plant Mol Breeding, Guangzhou 510642, Peoples R China
2.Fujian Acad Agr Sci, Crop Res Inst, Fujian Engn Res Ctr Characterist Dry Crop Varieti, Fuzhou 350013, Peoples R China
3.Hubei Univ Arts & Sci, Sch Basic Med, Xiangyang 441053, Peoples R China
关键词： Maize (Zea mays L; ); Teosinte (Zea mays ssp; Parviglumis); Agronomic traits; SNP marker; QTL; Linkage mapping
期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）
ISSN： 0014-2336
年卷期： 2021 年 217 卷 9 期
页码：
收录情况： SCI
摘要： Maize (Zea mays L.) is a staple food and energy crop worldwide. As the closest related wild progenitor of maize, teosinte (Z. mays ssp. Parviglumis) can, therefore, be a rich resource for useful variants lost during domestication. Here, we used the maize inbred line, B73, as the recurrent parent and a teosinte subspecies, K67-11, as the donor, and constructed a introgression line (IL) population. In brief, 10 K single nucleotide polymorphism (SNP) chips were used to genotype 135 maize-teosinte ILs from the BC2F4 population. Then, quantitative trait locus (QTL) mapping was performed for five plant-type and five ear traits across two different environments. In total, 94 putative QTLs were detected in a single environment analysis, whereas 14 QTLs were detected in two environments. In the whole genome, four regions controlling multiple traits were detected by comparing QTL distribution. Thus, these segments were possibly related to the functional regions controlling the aforementioned traits of maize. These results may not only be helpful for fine-mapping of major QTLs related to important agronomic traits in maize but also provide a valuable reference for molecular marker-assisted breeding and related basic research in maize.
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