Researchers at INRAE (IGEPP, France) are conducting a controlled environment study to assess pea resistance to Aphanomyces euteiches, a pathogen causing devastating root rot in legume crops.
The team is evaluating a MAGIC (Multiparent Advanced Generation Intercross) population comprising 1,800 pea lines. Initial screening of 300 lines has been completed using a rapid disease assay that measures root symptoms in 14-day-old plants, seven days post-inoculation. The results reveal promising variability in intrinsic resistance, with some lines showing high levels of disease resistance.
This population will be genotyped using the multi-species array developed in BELIS WP4. The genetic data will enable genomic prediction and genome-wide association studies (GWAS) to identify resistance genes and accelerate breeding efforts. This approach will support the development of pea varieties combining improved resistance to Aphanomyces root rot with enhanced agronomic performance and technological traits.
Contact: Clément Lavaud, Research Scientist, INRAE
