Multi-environment QTL analysis using an updated genetic map of a widely distributed Seri × Babax spring wheat population
Ver/Abrir
Autor/a
Liu, Caiyun
Khodaee, Mehdi
Lopes, Marta S.
Sansaloni, Carolina
Dreisigacker, Susanne
Sukumaran, Sivakumar
Reynolds, Matthew
Fecha de publicación
2019-08-30ISSN
1380-3743
Resumen
Seri/Babax spring wheat RIL population was developed to minimize the confounding effect of phenology in the genetic dissection of abiotic stress traits. An existing linkage map (< 500 markers) was updated with 6470 polymorphic Illumina iSelect 90K array and DArTseq SNPs to a genetic map of 5576.5 cM with 1748 non-redundant markers (1165 90K SNPs, 207 DArTseq SNPs, 183 AFLP, 111 DArT array, and 82 SSR) assigned to 31 linkage groups. We conducted QTL mapping for yield and related traits phenotyped in several major wheat growing areas in Egypt, Sudan, Iran, India, and Mexico (nine environments: heat, drought, heat plus drought, and yield potential). QTL analysis identified 39 (LOD 2.5–23.6; PVE 4.8–21.3%), 36 (LOD 2.5–15.4; PVE 2.9–21.4%), 30 (LOD 2.5–13.1; PVE 3.6–26.8%), 39 (LOD 2.7–14.4; PVE 2.6–15.9%), and 22 (LOD 2.8–4.8; PVE 6.8–12.9%) QTLs for grain yield, thousand-grain weight, grain number, days to heading, and plant height, respectively. The present study confirmed QTLs from previous studies and identified novel QTLs. QTL analysis based on high-yielding and low-yielding environmental clusters identified 11 QTLs (LOD 2.6–14.9; PVE 2.7–19.7%). The updated map thereby provides a better genome coverage (3.5-fold) especially on the D genome (4-fold), higher density (1.1-fold), and a good collinearity with the IWGSC RefSeq v1.0 genome, and increased the number of detected QTLs (5-fold) compared with the earlier map. This map serves as a useful genomic resource for genetic analyses of important traits on this wheat population that was widely distributed around the world.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
English
Materias (CDU)
633 - Cultivos y producciones
Páginas
26
Publicado por
Springer
Publicado en
Molecular Breeding
Citación
Liu, Caiyun, Mehdi Khodaee, Marta S. Lopes, Carolina Sansaloni, Susanne Dreisigacker, Sivakumar Sukumaran, and Matthew Reynolds. 2019. "Multi-Environment QTL Analysis Using An Updated Genetic Map Of A Widely Distributed Seri × Babax Spring Wheat Population". Molecular Breeding 39 (9). doi:10.1007/s11032-019-1040-1.
Program
Cultius Extensius Sostenibles
Este ítem aparece en la(s) siguiente(s) colección(ones)
- ARTICLES CIENTÍFICS [2829]
Excepto si se señala otra cosa, la licencia del ítem se describe como http://creativecommons.org/licenses/by-nc-nd/4.0/