Journal article
Multi-Locus Genome-Wide association studies for 14 Main agronomic traits in barley
Frontiers in Plant Science, Vol.9
2018
Abstract
The agronomic traits, including morphological and yield component traits, are important in barley breeding programs. In order to reveal the genetic foundation of agronomic traits of interest, in this study 122 doubled haploid lines from a cross between cultivars “Huaai 11” (six-rowed and dwarf) and “Huadamai 6” (two-rowed) were genotyped by 9680 SNPs and phenotyped 14 agronomic traits in 3 years, and the two datasets were used to conduct multi-locus genome-wide association studies. As a result, 913 quantitative trait nucleotides (QTNs) were identified by five multi-locus GWAS methods to be associated with the above 14 traits and their best linear unbiased predictions. Among these QTNs and their adjacent genes, 39 QTNs (or QTN clusters) were repeatedly detected in various environments and methods, and 10 candidate genes were identified from gene annotation. Nineteen QTNs and two genes (sdw1/denso and Vrs1) were previously reported, and eight candidate genes need to be further validated. The Vrs1 gene, controlling the number of rows in the spike, was found to be associated with spikelet number of main spike, spikelet number per plant, grain number per plant, grain number per spike, and 1,000 grain weight in multiple environments and by multi-locus GWAS methods. Therefore, the above results evidenced the feasibility and reliability of genome-wide association studies in doubled haploid population, and the QTNs and their candidate genes detected in this study are useful for marker-assisted selection breeding, gene cloning, and functional identification in barley.
Details
- Title
- Multi-Locus Genome-Wide association studies for 14 Main agronomic traits in barley
- Authors/Creators
- X. Hu (Author/Creator) - Huazhong Agricultural UniversityJ. Zuo (Author/Creator) - Huazhong Agricultural UniversityJ. Wang (Author/Creator) - Huazhong Agricultural UniversityL. Liu (Author/Creator) - Huazhong Agricultural UniversityG. Sun (Author/Creator) - Saint Mary's UniversityC. Li (Author/Creator) - Murdoch UniversityX. Ren (Author/Creator) - Huazhong Agricultural UniversityD. Sun (Author/Creator) - Huazhong Agricultural University
- Publication Details
- Frontiers in Plant Science, Vol.9
- Publisher
- Frontiers
- Identifiers
- 991005543190107891
- Copyright
- © 2018 Hu, Zuo, Wang, Liu, Sun, Li, Ren and Sun.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.4 Crop Science
- 3.4.96 QTL
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science