| Variants | Content, ηmol/g fw | |
| MT | L-Trp | |
| Freshly excised leaves | 0 | <10 |
| Floating on mannitol solution 0.5 M 3 days | 683 | 319 |
| Floating on PEG1500 solution 15% 3 days | 604 | 414 |
| Floating on 1% NaCl solution 3 days | 0 | 1319 |
| Wilted leaves after 2 days at: |
|
|
| 4˚C | 0 | 165 |
| 20˚C | 857 | 361 |
| 41˚C | 109 | 286 |