Table 1 Nuclear DNA content of Daucus taxa and outgroup species
Taxon | 2n a | Ploidy level | Nuclear DNA content | |||
|---|---|---|---|---|---|---|
N b | 2C value (pg, mean ± SE) | 2C value range (pg) | 1Cx (pg) | |||
Daucus I subclade | ||||||
 D. aureus | 22 | 2x | 21 | 1.020 ± 0.005 j | 0.981–1.059 | 0.510 |
 D. carota subsp. capillifolius | 18 | 2x | 20 | 1.058 ± 0.004 i | 1.028–1.089 | 0.529 |
 D. carota subsp. sativus (DH) | 18 | 2x | 8 | 0.999 ± 0.002 j | 0.994–1.011 | 0.500 |
 D. carota subsp. sativus (Dol) | 18 | 2x | 15 | 1.003 ± 0.004 j | 0.978–1.026 | 0.501 |
 D. muricatus | 22 | 2x | 14 | 2.126 ± 0.005 d | 2.103–2.162 | 1.063 |
 D. rouyi | 20 | 2x | 16 | 1.129 ± 0.007 h | 1.097–1.178 | 0.565 |
 D. sahariensis | 18 | 2x | 10 | 1.058 ± 0.009 i | 1.019–1.129 | 0.529 |
 D. syrticus | 18 | 2x | 4 | 1.038 ± 0.013 ij | 1.010–1.070 | 0.519 |
Daucus II subclade | ||||||
 D. conchitae | 22 | 2x | 14 | 2.078 ± 0.004 e | 2.037–2.095 | 1.039 |
 D. glochidiatus | 44 | 4x | 16 | 2.803 ± 0.011 b | 2.758–2.902 | 0.701 |
 D. guttatus | 20 | 2x | 14 | 2.365 ± 0.006 c | 2.323–2.410 | 1.183 |
 D. involucratus | 22 | 2x | 11 | 1.953 ± 0.004 f | 1.933–1.976 | 0.976 |
 D. littoralis | 20 | 2x | 19 | 3.228 ± 0.009 a | 3.150–3.318 | 1.614 |
 D. pusillus | 22 | 2x | 22 | 1.346 ± 0.003 g | 1.325–1.378 | 0.673 |
Outgroups | ||||||
 Caucalis platycarpos | 20 | 2x | 16 | 1.775 ± 0.003 d | 1.761–1.800 | 0.888 |
 Orlaya daucoides | 16 | 2x | 23 | 2.194 ± 0.004 c | 2.159–2.244 | 1.097 |
 O. daucorlaya | 14 | 2x | 12 | 2.625 ± 0.005 b | 2.589–2.655 | 1.313 |
 Torilis arvensis | 12 | 2x | 19 | 2.882 ± 0.006 a | 2.838–2.933 | 1.441 |