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Wingen, L.U.

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Wingen
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L.U.
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Wingen, L.U.
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0000-0002-4682-4764

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2015 - 201922020 - 20242
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Now showing 1 - 4 of 4
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    The wheat powdery mildew resistance gene Pm4 also confers resistance to wheat blast
    (Nature Research, 2024) O’Hara, T.; Steed, A.; Goddard, R.; Gaurav, K.; Sanu Arora; Quiroz-Chávez, J.; Ramirez-Gonzalez, R.H.; Badgami, R.; Gilbert, D.; Sánchez-Martín, J.; Wingen, L.U.; Cong Feng; Mei Jiang; Shifeng Cheng; Dreisigacker, S.; Keller, B.; Wulff, B.B.H.; Uauy, C.; Nicholson, P.
    Publication
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    A roadmap for gene functional characterisation in crops with large genomes: lessons from polyploid wheat
    (eLife Sciences Publications, 2020) Adamski, N.M.; Borrill, P.; Brinton, J.; Harrington, S.A.; Marchal, C.; Bentley, A.R.; Bovill, W.D.; Cattivelli, L.; Cockram, J.; Contreras-Moreira, B.; Ford, B.; Ghosh, S.; Harwood, W.; Hassani-Pak, K.; Hayta, S.; Hickey, L.; Kanyuka, K.; King, J.; Maccaferri, M.; Naamati, G.; Pozniak, C.; Ramirez-Gonzalez, R.H.; Sansaloni, C.; Trevaskis, B.; Wingen, L.U.; Wulff, B.B.H.; Uauy, C.
    Publication
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    Using the UK reference population Avalon X Cadenza as a platform to compare breeding strategies in elite Western European bread wheat
    (Springer Verlag, 2015) Ma, J.; Wingen, L.U.; Orford, S.; Fenwick, P.; Wang, J.; Griffiths, S.
    Wheat breeders select for qualitative and quantitative traits, the latter often detected as quantitative trait loci (QTL). It is, however, a long procedure from QTL discovery to the successful introduction of favourable alleles into new elite varieties and finally into farmers’ crops. As a proof of principle for this process, QTL for grain yield (GY), yield components, plant height (PH), ear emergence (EM), solid stem (SS) and yellow rust resistance (Yr) were identified in segregating UK bread wheat reference population, Avalon 9 Cadenza. Among the 163 detected QTL were several not reported before: 17 for GY, the major GYQTL on 2D; a major SS QTL on 3B; and Yr6 on 7B. Common QTL were identified on ten chromosomes, most interestingly, grain number (GN) was found to be associated with Rht-D1b; and GY and GN with a potential new allele of Rht8. The interaction of other QTL with GY and yield components was discussed in the context of designing a UK breeding target genotype. Desirable characteristics would be: similar PH and EM to Avalon; Rht-D1b and Vrn-A1b alleles; high TGW and GN; long and wide grains; a large root system, resistance to diseases; and maximum GY. The potential of the identified QTL maximising transgressive segregation to produce a high-yielding and resilient genotype was demonstrated by simulation. Moreover, simulating breeding strategies with F2 enrichment revealed that the F2–DH procedure was superior to the RIL and the modified SSD procedure to achieve that genotype. The proposed strategies of parent selection and breeding methodology can be used as guidance for marker-assisted wheat breeding.
    Publication
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    Genetic dissection of grain size and grain number trade-offs in CIMMYT Wheat Germplasm
    (Public Library of Science, 2015) Griffiths, S.; Wingen, L.U.; Pietragalla, J.; García, G.; Hasan, A.K.; Miralles, D.; Calderini, D.; Jignaben Bipinchandra Ankleshwaria; Leverington Waite, M.; Simmonds, J.; Snape, J.; Reynolds, M.P.
    Grain weight (GW) and number per unit area of land (GN) are the primary components of grain yield in wheat. In segregating populations both yield components often show a negative correlation among themselves. Here we use a recombinant doubled haploid population of 105 individuals developed from the CIMMYT varieties Weebill and Bacanora to understand the relative contribution of these components to grain yield and their interaction with each other. Weebill was chosen for its high GW and Bacanora for high GN. The population was phenotyped in Mexico, Argentina, Chile and the UK. Two loci influencing grain yield were indicated on 1B and 7B after QTL analysis. Weebill contributed the increasing alleles. The 1B effect, which is probably caused by to the 1BL.1RS rye introgression in Bacanora, was a result of increased GN, whereas, the 7B QTL controls GW. We concluded that increased in GW from Weebill 7B allele is not accompanied by a significant reduction in grain number. The extent of the GW and GN trade-off is reduced. This makes this locus an attractive target for marker assisted selection to develop high yielding bold grain varieties like Weebill. AMMI analysis was used to show that the 7B Weebill allele appears to contribute to yield stability.
    Publication