Table 3.
Composition of final treatment solutions with the estimated electrical conductivity (EC, Tanji, 2002) used in an experiment on the salt tolerance mechanism of the hybrid species Helianthus paradoxus and its progenitors Helianthus annuus and Helianthus petiolaris
| Composition (mEq l−1) | Nonsaline | Field-like | K addition | Ca & Mg reduction |
|---|---|---|---|---|
| Na+ | 0.5 | 90 | 90 | 90 |
| K+ | 1 | 1 | 4 | 1 |
| Ca2+ | 3.5 | 16 | 16 | 3.5 |
| Mg2+ | 1 | 11 | 11 | 1 |
| NH4+ | 0.5 | 0.5 | 0.5 | 0.5 |
| Cl− | 2.5 | 97 | 100 | 78.5 |
| SO42− | 1 | 16 | 16 | 12 |
| HCO3− | 0.5 | 3 | 3 | 3 |
| NO3− | 2 | 2 | 2 | 2 |
| PO43− | 0.5 | 0.5 | 0.5 | 0.5 |
| EC (dS m−1) | 0.65 | 11.85 | 12.15 | 9.60 |