Table 1. Effect of phenyl substituents on apical hook development of Arabidopsis seedlings.
| |||
|---|---|---|---|
| Comp. No. | R | Curvature of the hook (Degree) | |
| 10 (μM) | 100 (μM) | ||
| C1 | 2-Fluoro | 42±2 | 72±10 |
| C2 | 3-Fluoro | 53±10 | 85±19 |
| C3 | 4-Fluoro | 46±9 | 95±21 |
| C4 | 2,4-Difluoro | 42±6 | 59±13 |
| C5 | 3,4-Difluoro | 39±14 | 123±21 |
| C6 | 2,4,5-Trifluoro | 60±21 | 84±16 |
| C7 | 3-Chloro-2-fluoro | 54±8 | 106±32 |
| C8 | 3-Chloro-4-fluoro | 58±7 | 223±35 |
| C9 | 4-Chloro-3-trifluoromethyl | 83±22 | 203±22 |
| C10 | 5-Chloro-2-methoxy | 68±10 | 142±36 |
| C11 | 4-Methyl | 75±8 | 115±26 |
| C12 | 4-Ethyl | 153±17 | 184±26 |
| C13 | 4-Propyl | 153±10 | 199±39 |
| C14 | 4-tert-Butyl | 70±8 | 220±16 |
| C15 | 4-Phenyl | 53±7 | 193±25 |
| C16 | 2,5-Dimethyl | 68±16 | 108±17 |
| C17 | 2,4,6-Trimethyl | 115±19 | 135±33 |
| C18 | 4-Methoxy | 72±7 | 120±28 |
| C19 | 4-Isopropoxy | 77±8 | 179±30 |
| C20 | 4-Trifluoromethyl | 74±21 | 195±52 |
| C21 | 2-Trifluoromethyl | 92±17 | 190±25 |
| C22 | 2,4,5-Trichloro | 95±14 | 223±20 |
| C23 | 4-Bromo-2,5-difluoro | 106±35 | 213±18 |
| C24 | 4-Phenylazo | 124±15 | 166±20 |
| EH-8 | 3,4-Dichloro | 185±14 | 275±32 |
| Ethephone | 128±10 | 209±16 | |
| Control | 38±9 | ||
Data are the means±S.E. obtained from 11 to 15 plants. All the experiments were done three times to establish the repeatability.