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Dissection of Wild Emmer Wheat QTLs (Quantitative Trait Loci) Conferring Drought Resistance
Project
Project code: 2813IL03, JKI-RS-08-3386
Contract period: 01.11.2014
- 31.03.2018
Budget: 112,897 Euro
Purpose of research: Applied research
Drought will gain evident importance as a yield limiting factor in wheat production worldwide. However, genetic variation for drought stress tolerance in adapted wheat genotypes is quite limited. Wild relatives, like emmer wheat (T. diccocoides), are a valuable resource for improving drought stress tolerance in T. durum and T. aestivum, therefore. QTL for drought stress tolerance have been identified already in T. diccocoides. The aim of this project is to saturate these with molecular markers and to transfer the shortest QTL carrying fragments into adapted wheat genotypes to improve drought stress tolerance.
F4 progenies that were prcviously sown in December 2016, were grown under water-limited and well-watered conditions for phenotyping in 2017. The QTLs on chromosome 2BS and 7AS were both narrowed down to a genetic intervals of 3-4 cM correspondning to 13.6 Mio and 1.1 Mio basepairs. They harbor about 156 and 43 genes, respectively. Segmental RILs showing recombination events within these regions are currently subjected to genotyping by sequencing (GBS) to identify additional recombination events to further narrow down the QTL-fragments. Both QTL-regions are introgressed into German wheat elite culitvars in parallel.
Section overview
Subjects
- Plant Breeding
Framework programme
Funding programme
Excutive institution
Institute of Resistance Research and Stress Tolerance (JKI-RS)