Journal of genetics | |
Comparative mapping of quantitative trait loci for tassel-related traits of maize in F2:3 and RIL populations | |
QIANG YI^11  XIANGGE ZHANG^12  YINGHONG LIU^23  | |
[1] Agronomy College, Sichuan Agricultural University, Chengdu 611130, Sichuan, People’s Republic of China^1;Life Science College, Sichuan Agricultural University, Yaan 625014, Sichuan, People’s Republic of China^3;Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, People’s Republic of China^2 | |
关键词: maize; tassel; comparative quantitative trait loci mapping; generation; | |
DOI : | |
学科分类:生物科学(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Tassel architecture is an important trait in maize breeding and hybrid seed production. In this study, we investigated total tassel length (TTL) and tassel branch number (TBN) in 266 F2:3 families across six environments and in 301 recombinant inbred lines (RILs) across three environments, where all the plants were derived from a cross between 08-641 and Ye478. We compared thegenetic architecture of the two traits across two generations through combined analysis. In total, 27 quantitative trait loci (QTLs) (15 in F2:3; 16 in RIL), two QTL Ã environment interactions (both in F2:3), 11 pairs of epistatic interactions (seven in F2:3; four in RIL) and four stable QTLs in both the F2:3 and RILs were detected. The RIL population had higher detection power than the F2:3 population. Nevertheless, QTL Ã environment interactions and epistatic interactions could be more easily detected in the F2:3 population than in the RILs. Overall, the QTL mapping results in the F2:3 and RILs were greatly influenced by genetic generations and environments. Finally, fine mapping for a novel and major QTL, qTTL-2-3 (bin 2.07), which accounted for over 8.49% of the phenotypic variation across different environments and generations, could be useful in marker-assisted breeding.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201910251428648ZK.pdf | 1842KB | download |