subproject F: "Analysis of innovations in disease resistance and quality"
efficient and cost effective way of plant protection. Therefore, the subproject aims to (i) get a detailed overview on the breeding progress for resistance against stripe rust, leaf rust, powdery mildew and fusarium head blight (P. striiformis, P. triticina, Blumeria graminis, Fusarium culmorum) during 50 years of wheat breeding in Germany, (ii) get information of the impact of the production system on the resistance against these pathogens, (iii) identify QTL and genes involved in these resistance by genome wide association studies (GWAS), (iv) use these results to develop strategies to enable directed breeding for resistance in the future.
The following hypotheses will be tested:
1. Resistance to fungal diseases has changed (improved) over time.
2. The importance of resistances varies between different production systems.
3. In the course of breeding different genes and QTL have been incorporated in new cultivars.
4. Marker based combination of these genes and QTL may facilitate efficient breeding in the future.
At the Julius Kuehn-Institute at Quedlinburg the 220 winter wheat varieties of the BRIWECS set of genotypes including some checks (susceptible/resistant) will be grown in three years in 4.5m2 plots in two replications each and four variants, i.e. low-input, low-input with plant protection, semi-intensive and intensive. Artificial inoculation will be used in variants without plant protection (low input, semi-intensive).
project leader: Prof. Dr. Frank Ordon
project assistance: Dr. Holger Zetzsche