Table 2. The Ka/Ks ratios and date of duplication for duplicate HVA22 genes in three wild tomatos.
| Species | Duplicated gene pairs | Ka | Ks | Ka/Ks | Selective pressure | Type |
|---|---|---|---|---|---|---|
| S.lycopersicoides | SlydHVA2b/SlydHVA22k | 0.80688 | 1.83965 | 0.43861 | Purify selection | Segmental |
| SlydHVA2c/SlydHVA22i | 0.43342 | 1.57164 | 0.27577 | Purify selection | Segmental | |
| SlydHVA22e/SlydHVA22h | 0.22811 | 3.48793 | 0.0654 | Purify selection | Segmental | |
| SlydHVA22g/SlydHVA22p | 0.18797 | 0.6627 | 0.28364 | Purify selection | Segmental | |
| S.pimpinellifolium | SpiHVA22a/SpiHVA22n | 0.34191 | 2.79239 | 0.12244 | Purify selection | Segmental |
| SpiHVA22b/SpiHVA22 f | 1.13033 | 3.13699 | 0.36032 | Purify selection | Segmental | |
| SpiHVA22d/SpiHVA22h | 0.24031 | 3.49311 | 0.0688 | Purify selection | Segmental | |
| SpiHVA22e/SpiHVA22o | 0.20661 | 0.78885 | 0.26192 | Purify selection | Segmental | |
| SpiHVA22i/SpiHVA22j | 0.17878 | 0.9293 | 0.19239 | Purify selection | Segmental | |
| S.pennellii | SpHVA22a/SpHVA22l | 0.46107 | 3.2625 | 0.14132 | Purify selection | Segmental |
| SpHVA22b/SpHVA22h | 0.18824 | 1.15914 | 0.16239 | Purify selection | Segmental | |
| SpHVA22d/SpHVA22g | 0.22977 | 3.50697 | 0.06552 | Purify selection | Segmental | |
| SpHVA22e/SpHVA22m | 0.18263 | 0.65296 | 0.27969 | Purify selection | Segmental |