Genome-Wide Association Study (GWAS) for heading date and crown rust resistance in perennial ryegrass.

This work aimed to identify Quantitative Trait Loci associated with heading date and crown rust in perennial ryegrass. Full details on the collection and analysis of phenotypic data can be found in https://doi.org/10.1038/s41598-017-03232-8 and https://doi.org/10.1186/s12863-018-0613-z , and associated raw genotyping-by-sequencing (GBS) data is available at the NCBI (BioProject accession PRJNA352789). When those initial studies were carried out a pseudochromosome scale assembly of perennial ryegrass was not yet available. In this work, the GBS data has been re-analysed using the pseudochromosome scale assembly as a reference, a new SNP database established, and used to carry out a GWAS.