The effect of EDU treatment on net photosynthesis of 2-yr-old containerized seedlings of yellow-poplar for a period of 7 days following treatment.
| Time | Photosynthesisz (mgCO2m−2s−1) | ||
|---|---|---|---|
| EDU Injectiony | EDU Drenchx | No EDU | |
| 0 | 0.313ab | 0.345ab | 0.314ab |
| 2 | 0.374ab | 0.287b | 0.374ab |
| 4 | 0.363ab | 0.333ab | 0.407a |
| 7 | 0.294b | 0.320ab | 0.217c |
↵zPhotosynthesis measured on a single leaf from each seedling (plastochron index=5). Each value represents the mean of 5 consecutive measurements on each of 12 seedlings. Mean separation among all treatment-time combinations by Duncan’s new multiple range test, 5% level.
↵y5 ml EDU (500 ppm) per seedling.
↵x250 ml EDU (500 ppm) per container.