Table III.
Effects of localized NPA application on [3H]IAA movement
| Treatment | [3H]IAA Transported | |
|---|---|---|
| cpm | fmol | |
| Control agar | 1501 ± 175 | 61.4 ± 7.1 |
| NPA agar | 1124 ± 52 | 46.0 ± 2.1 |
Agar blocks containing [3H]IAA were applied to 4-d-old seedlings with and without NPA-containing blocks, and radioactivity in the roots was determined after 24 h. The reported values are averages ± se of four replicates, each containing five plants.
a
Using a Mann-Whitney U test, the differences in IAA are statistically significant (P ≤ 0.04).