| Ks | synonymous substitution |
| TPSs | terpene synthase genes |
| WGD | whole-genome duplication |
| Mya | millions of years ago |
| CNV | copy number variant |
| KEGG | Kyoto Encyclopedia of Genes and Genomes |
| SNPs | single nucleotide polymorphisms |
| InDels | insertions or deletions of DNA segments |
| SVs | structural variations |