Table III.
Effects of auxin (NAA) and auxin transport inhibitor (NPA) on root growth in rice plants
Rice seedlings were grown hydroponically, NAA or NPA was mixed in nutrient solution and applied to 3-d-old seedlings, and observations were taken 3 d later. The data are means ± sd (n = 8–10 plants). Asterisks indicate values of wild-type plants that are significantly different from values of OX lines within that treatment (P < 0.05, Fisher's protected lsd test).
| Treatment and Plant | Primary Root Length | Lateral Roots per Plant Primary Root |
|---|---|---|
| cm | ||
| Control | ||
| Wild type | 15.6* ± 1.2 | 102* ± 12 |
| OX1 | 12.9 ± 1.0 | 78 ± 8 |
| OX2 | 13.1 ± 1.0 | 80 ± 9 |
| 0.2 μm NAA | ||
| Wild type | 12.0 ± 1.0 | 98 ± 10 |
| OX1 | 11.1 ± 1.0 | 94 ± 9 |
| OX2 | 11.5 ± 1.1 | 96 ± 11 |
| 5 μm NPA | ||
| Wild type | 14.8* ± 1.1 | 78* ± 8 |
| OX1 | 12.1 ± 0.9 | 60 ± 7 |
| OX2 | 11.7 ± 1.0 | 58 ± 6 |