Table 4.
Ka/Ks ratios and dates of duplication for duplicated HD2 genes in G. arboreum, G. hirsutum, and G. barbadense.
| Name of duplicated HD2 gene 1 | ID of duplicated HD2 gene 1 | ID of duplicated HD2 gene 2 | Name of duplicated HD2 gene 2 | Ka | Ks | Ka/Ks | Date (MYA); T = Ks/2λ |
Selective pressure | Duplicate type |
|---|---|---|---|---|---|---|---|---|---|
| GaHDT1.1 | Cotton_A_00517 | Cotton_A_00517 | GaHDT3.1 | 0.346280551 | 1.3663338 | 0.253437741 | 45.54445998 | Purifying selection | Segmental |
| GaHDT3.1 | Cotton_A_05503 | Cotton_A_05503 | GaHDT3.2 | 0.145578276 | 0.54183266 | 0.268677557 | 18.06108875 | Purifying selection | Segmental |
| GbHDT3A.1 | Gbar_D01G021820.1 | Gbar_D01G021820.1 | GbHDT3D.2 | 0.024334196 | 0.05283875 | 0.460536965 | 1.761291524 | Purifying selection | Segmental |
| GbHDT1A.2 | Gbar_D05G008680.1 | Gbar_D05G008680.1 | GbHDT1D.2 | 0.007225489 | 0.04341175 | 0.166440851 | 1.44705849 | Purifying selection | Segmental |
| GbHDT1A.1 | Gbar_D09G010030.1 | Gbar_D09G010030.1 | GbHDT1D.1 | 0.009010245 | 0.06298406 | 0.14305596 | 2.099468568 | Purifying selection | Segmental |
| GbHDT3A.2 | Gbar_D11G036570.1 | Gbar_D11G036570.1 | GbHDT3D.1 | 0.018447187 | 0.04825246 | 0.382305665 | 1.608415218 | Purifying selection | Segmental |
| GhHDT3A.1 | Ghir_D01G021720.1 | Ghir_D01G021720.1 | GhHDT3D.1 | 0.042065664 | 0.07531594 | 0.558522702 | 2.510531459 | Purifying selection | Segmental |
| GhHDT1A.1 | Ghir_D05G008730.1 | Ghir_D05G008730.1 | GhHDT1D.1 | 0.007526405 | 0.03963186 | 0.189907947 | 1.321062034 | Purifying selection | Segmental |
| GhHDT1A.2 | Ghir_D09G009840.1 | Ghir_D09G009840.1 | GhHDT1D.2 | 0.007681542 | 0.06383745 | 0.120329713 | 2.127914992 | Purifying selection | Segmental |
| GhHDT3A.2 | Ghir_D11G035640.1 | Ghir_D11G035640.1 | GhHDT3D.2 | 0.018451552 | 0.04269717 | 0.432149327 | 1.423238868 | Purifying selection | Segmental |