Table 2.
Carbon isotope discrimination (δ13C) and CO2 compensation point (Г) for a subset of Salsoleae s.s. Values with different letters are significantly different according to one-way ANOVA with a post hoc Tukey HSD.
| Species | Carbon isotope discrimination δ13C, o/oo | CO2 compensation point, Г, µmol mol–1 |
|---|---|---|
| S. abrotanoides, C3 | -31.2 ± 0.6 (n = 4) a | 61.2 ± 0.7 (n = 2) a |
| R. regelii, C3–C4 | -31.5 ± 0.3 (n = 8) a | 36.1 ± 2.2 (n = 4) b |
| S. deschaseauxiana, C3–C4 | -29.9 ± 0.3 (n = 6) ab | 31.9 ± 1.8 (n = 4) b |
| S. gymnomaschala, C3–C4 | -28.8 ± 0.3 (n = 12) b | 31.2 ± 1.0 (n = 3) b |
| S. divaricata, C3–C4 | -29.9 ± 0.3 (n = 16) ab | 33.3 ± 2.5 (n = 3) b |
| S. verticillata, C3–C4 | -29.1 ± 0.4 (n = 14) b | 32.2 ± 2.0 (n = 6) b |
| S. oppositifolia, C4 | -13.0 ± 0.3 (n = 6) c | 3.7 ± 0.9 (n = 4) c |