Hackenberg, Dieter 
ORCID: 0000-0003-4850-2221, Asare-Bediako, Elvis, Baker, Adam, Walley, Peter, Jenner, Carol, Greer, Shannon, Bramham, Lawrence, Batley, Jacqueline, Edwards, David, Delourme, Regine et al (show 3 more authors)
(2020)
Identification and QTL mapping of resistance to Turnip yellows virus (TuYV) in oilseed rape, Brassica napus.
Theoretical and Applied Genetics, 133 (2).
pp. 383-393.
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Abstract
<jats:title>Abstract</jats:title><jats:sec><jats:title>Key message</jats:title><jats:p>Partially dominant resistance to Turnip yellows virus associated with one major QTL was identified in the natural allotetraploid oilseed rape cultivar Yudal.</jats:p></jats:sec><jats:sec><jats:title>Abstract</jats:title><jats:p>Turnip yellows virus (TuYV) is transmitted by the peach-potato aphid (<jats:italic>Myzus persicae</jats:italic>) and causes severe yield losses in commercial oilseed rape crops (<jats:italic>Brassica napus</jats:italic>). There is currently only one genetic resource for resistance to TuYV available in brassica, which was identified in the re-synthesised<jats:italic>B. napus</jats:italic>line ‘R54’. In our study, 27 mostly homozygous<jats:italic>B. napus</jats:italic>accessions, either doubled-haploid (DH) or inbred lines, representing a diverse subset of the<jats:italic>B. napus</jats:italic>genepool, were screened for TuYV resistance/susceptibility. Partial resistance to TuYV was identified in the Korean spring oilseed rape,<jats:italic>B. napus</jats:italic>variety Yudal, whilst the dwarf French winter oilseed rape line Darmor-<jats:italic>bzh</jats:italic>was susceptible. QTL mapping using the established Darmor-<jats:italic>bzh</jats:italic>× Yudal DH mapping population (DYDH) revealed one major QTL explaining 36% and 18% of the phenotypic variation in two independent experiments. A DYDH line was crossed to Yudal, and reciprocal backcross (BC<jats:sub>1</jats:sub>) populations from the F<jats:sub>1</jats:sub>with either the susceptible or resistant parent revealed the dominant inheritance of the TuYV resistance. The QTL on ChrA04 was verified in the segregating BC<jats:sub>1</jats:sub>population. A second minor QTL on ChrC05 was identified in one of the two DYDH experiments, and it was not observed in the BC<jats:sub>1</jats:sub>population. The TuYV resistance QTL in ‘R54’ is within the QTL interval on Chr A04 of Yudal; however, the markers co-segregating with the ‘R54’ resistance are not conserved in Yudal, suggesting an independent origin of the TuYV resistances. This is the first report of the QTL mapping of TuYV resistance in natural<jats:italic>B. napus</jats:italic>.</jats:p></jats:sec>
| Item Type: | Article |
|---|---|
| Depositing User: | Symplectic Admin |
| Date Deposited: | 07 Nov 2019 09:52 |
| Last Modified: | 19 Jan 2023 00:20 |
| DOI: | 10.1007/s00122-019-03469-z |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3060853 |
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