Table 5. Treatment design points and fresh weight growth data of a 2-component quadratic mixture design.
The proportions of K+ and Na+ were varied while the total amount was kept constant at 23.2 mM, the level in MS medium. For example, treatment point #1 would include 17.4 mM Na+ and 5.8 mM K+.
| Treatment Design Points | Na+ | K+ | Fresh weight growth |
|---|---|---|---|
| proportions | % | ||
| 1 | 0.75 | 0.25 | 1038 |
| 2 | 0.5 | 0.5 | 1082 |
| 3 | 1 | 0 | 217 |
| 4 | 1 | 0 | 196 |
| 5 | 0.5 | 0.5 | 1317 |
| 6 | 0.25 | 0.75 | 1031 |
| 7 | 0.75 | 0.25 | 906 |
| 8 | 0 | 1 | 867 |
| 9 | 1 | 0 | 215 |
| 10 | 0 | 1 | 1125 |
| 11 | 0.5 | 0.5 | 1021 |
| 12 | 0 | 1 | 1146 |
| 13 | 0.25 | 0.75 | 1209 |