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Levels of free and conjugated IAA in S. punctata ecotypes 203 and 760
| Plant Materiala | Free IAA | IAA Conjugates |
|---|---|---|
| pmol mg−1 dry wt | ||
| 203 | 88 | 0.76 |
| 760 | 1,591 | 27 |
Plants were grown phototropically on Hutner’s medium. Mature, but non-senescent, cultures of UV-sensitive 203 and UV-tolerant 760 S. punctata were analyzed for IAA levels using GC-MS (Prinsen et al., 1995). The error on measurement is ≤10%.
