Identification of New QTL Contributing to Barley Yellow Dwarf Virus-PAV (BYDV-PAV) Resistance in Wheat
| Autor: | Yun Fan, Craig Birchall, J Zhu, Shormin Choudhury, Matthew J. Hayden, Meixue Zhou, Hongliang Hu, Phil Larkin, Holger Meinke, Rugen Xu, Kerrie L. Forrest |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine China Quantitative Trait Loci Population Single-nucleotide polymorphism Plant Science Quantitative trait locus Plant disease resistance 01 natural sciences 03 medical and health sciences Luteovirus education Gene Triticum Disease Resistance Plant Diseases Genetics education.field_of_study biology food and beverages biology.organism_classification 030104 developmental biology Barley yellow dwarf Thinopyrum intermedium Doubled haploidy Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Plant Disease. 103:2798-2803 |
| ISSN: | 1943-7692 0191-2917 |
| Popis: | Barley yellow dwarf (BYD) is a major virus disease which dramatically reduces wheat yield. Introducing BYD resistance genes into commercial varieties has been proven to be effective in reducing damage caused by barley yellow dwarf virus (BYDV). However, only one major resistance gene is readily deployable for breeding; Bdv2 derived from Thinopyrum intermedium is deployed as a chromosomal translocation. In this study, a double haploid (DH) population was developed from a cross between XuBYDV (introduced from China showing very good resistance to BYD) and H-120 (a BYD-sensitive Chinese accession), and was used to identify QTL for BYD resistance. The population was genotyped using an Infinium iSelect bead chip array targeting 90K gene-based SNPs. The disease resistance of DH lines inoculated with BYDV was assessed at the heading stage. The infections were assessed by tissue blot immunoassay (TBIA). Three new QTL were identified on chromosomes 5A, 6A, and 7A for both symptom and TBIA, with all three resistance alleles being inherited from XuBYDV. Some DH lines with the resistance alleles from all three QTL showed high level resistance to BYD. These new QTL will be useful in breeding programs for pyramiding BYD resistance genes. |
| Databáze: | OpenAIRE |
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