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Combination of Septoria, Fusarium, and DTR resistances in elite wheat by genomic selection (MultiResistGS)
Project
Project code: JKI-RS-08-3432
Contract period: 01.10.2020
- 30.09.2025
Purpose of research: Applied research
Resistances against Septoria tritici, Fusarium ssp, and Pyrenophora tritici repentis were developed and characterized in several research projects. However, due to their insufficient agronomic performance, the resistance donors can not be used as crossing partners to generate lines that have the potential to be released as varieties.
Lines generated by marker-assisted backcrossing can reach the performance level of their elite parent. However due to the long duration of the procedure, they can not reach the performance level of the best lines that are available at the end of the backcrossing program. Moreover, application is limited to one single donor parent. In our project we will develop new breeding strategies that will overcome these shortcomings of marker-assisted backcrossing.
We plan to develop F1-DH lines from a factorial cross of elite lines and resistance donors. The DH lines will be genotyped and phenotypically evaluated for resistances, agronomic traits, yield, and quality. From these data we will estimate genome-wide effects. In three subsequent intermating generations we will use the genome-wide effects to combine genome regions with favorable effects for resistance and performance traits. At the end of the project we will develop DH lines. The combination of performance genes from different elite lines allows the development of new lines, which are superior to the parental elite lines. Employing different resistance donors allows the combination of resistances from more than one source lines. The goals of our proposal are (1) the development of breeding strategies to combine resistance and performance traits from multiple parents with genomic selection in wheat and (2) making available resistances in elite breeding material.
Section overview
Subjects
- Plant Breeding
- Crop Protection
Framework programme
Funding programme
Excutive institution
Institute of Resistance Research and Stress Tolerance (JKI-RS)
