Quality check and trimming
The quality of Illumina short reads was examined using FastQC (http://www.bioinformatics.babraham.ac.uk/projects/fastqc/). Based on the quality check results, trimming of reads were conducted using Trimmomatic v0.36 (Bolger, Lohse, & Usadel, 2014).
Heterozygosity assessment
Using Jellyfish (Marçais, & Kingsford, 2011) and GenomeScope (Vurture et al., 2017), heterozygosity in the one of the sequenced individuals was estimated. For comparison, heterozygosity of A. yamamai (Kim et al., 2018) was also estimated. Short read data used for Jellyfish were available under accession numbers DRR213145 (S. ricini ) and SRR5641445 (A. yamamai ).