Genomic DNA was extracted from the bulked young leaves of 24 plants of each genotype using the TIANGEN® plant genomic extraction kit (DP305-03) (Beijing, China). Accessions were genotyped using the Brassica 60K Illumina Infinium® SNP array (Edwards et al., 2013 (link)), according to the Infinium® HD Assay Ultra Protocol Guide. Using a local BLASTn search, the SNPs of the array were aligned to the B. napus reference genome assembly v4.1 (Chalhoub et al., 2014 (link)). Only the top BLAST hits against the reference genome were considered, allowing no less than 50 bp overlap, 90% sequence identity, and no gaps (Clarke et al., 2016 (link)).
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