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Journal article
Genome-wide association mapping for seedling and adult resistance to powdery mildew in barley
Theoretical and applied genetics, Vol.137(3), 50
2024
PMID: 38363421
Abstract
Powdery mildew (PM), caused by Blumeria hordei, can occur at all post emergent stages of barley and constantly threatens crop production. To identify more genes for effective resistance to powdery mildew for use in breeding programs, 696 barley accessions collected from different regions of the world were evaluated for PM resistance at seedling and adult growth stages in three different states of Australia. These barley accessions were genotyped using DArTSeq with over 18,000 markers for a genome-wide association study (GWAS). Using the FarmCPU model, 54 markers showed significant associations with PM resistance scored at the seedling and adult-plant stages in different states of Australia. Another 40 markers showed tentative associations (LOD > 4.0) with resistance. These markers are distributed across all seven barley chromosomes. Most of them were grouped into eleven QTL regions, coinciding with the locations of most of the reported resistance genes. Two major MTAs were identified on chromosome arms 3HS and 5HL, with one on 3HS contributing to adult plant resistance and the one on 5HL to both seedling and adult plant resistance. An MTA on 7HS contributed mainly to the adult-plant resistance, while another one on chromosome arm 1HS made a significant contribution to the seedling resistance.
Details
- Title
- Genome-wide association mapping for seedling and adult resistance to powdery mildew in barley
- Authors/Creators
- Jie Guo - Shanxi Agricultural UniversityChenchen Zhao - University of TasmaniaSanjiv Gupta - Murdoch, 6150 Australia South Perth, WA AustraliaGreg Platz - Warwick, QLD 4370 AustraliaLisle Snyman - Warwick, QLD 4370 AustraliaMeixue Zhou - University of Tasmania
- Publication Details
- Theoretical and applied genetics, Vol.137(3), 50
- Publisher
- Springer Berlin Heidelberg
- Identifiers
- 991005638868907891
- Copyright
- © The Author(s) 2024
- Murdoch Affiliation
- Western Crop Genetics Alliance
- 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
- Agronomy
- Genetics & Heredity
- Horticulture
- Plant Sciences
- ESI research areas
- Agricultural Sciences