Table 4.
δ13C value of S. ferganica and other plant species.
| Plant species | Growth condition | Measurement date | Developmental stage | δ13C (‰) |
|---|---|---|---|---|
| S. aralocaspica | Greenhouse | Dec, 2015 | Early seedling (1 W) | −14.87 ± 0.366 |
| S. ferganica | Greenhouse | Dec, 2015 | Early seedling (1 W) | −20.41 ± 0.3129 |
| S. ferganica | Greenhouse | May, 2016 | Early adult plant (2 M) | −21.73 ± 0.2012 |
| S. ferganica | Outdoor | May, 2016 | Early adult plant (2 M) | −16.15 ± 0.3463 |
| C. album | Greenhouse | May, 2016 | Early adult plant (2 M) | −34.15 ± 0.6043 |
| N. tabacum | Greenhouse | May, 2016 | Early adult plant (2 M) | −33.10 ± 0.3284 |
W, week; M, month. δ13C, carbon isotope value. δ13C value of C4 species is −10‰–−15‰; C3 species is −21‰–−30‰ (Sage et al., 1999). Values are means ± SE of three replicates.