Table 2.
Effect of safeners on wheat shoot elongation and dry weight assimilation. Wheat seeds were imbibed for in 0.1% (v/v) acetone (control), or 10 mg L−1 solution of the safeners cloquintocet mexyl, fenchlorazole ethyl, and mefenpyr diethyl, followed by daily spraying with the same treatments after planting. Wheat shoots (50 per sample) were then measured for length and % dry weight determined at 7, 10, 12 and 14 days after sowing. Values shown are means ± standard deviations marked with * results being significantly different from the respective controls at a 95% confidence interval.
| A | Days after sowing |
|||
|---|---|---|---|---|
| 7 |
10 |
12 |
14 |
|
| Mean height of shoots (mm) | ||||
| Control | 96 (±23) | 156 (±13) | 195 (±10) | 235 (±6) |
| Cloquintocet mexyl | 97 (±14) | 159 (±15) | 195 (±8) | 264 (±9)* |
| Fenchlorazole ethyl | 106 (±10)* | 181 (±15)* | 230 (±11)* | 264 (±15)* |
| Mefenpyr diethyl | 101 (±10) | 173 (±14)* | 197 (±9) | 245 (±10)* |
| B | Days after sowing |
|||
|---|---|---|---|---|
| 7 |
10 |
12 |
14 |
|
| Mean dry weight (mg) per 1 g fresh weight | ||||
| Control | 90 (±5) | 100 (±2) | 100 (±2) | 110 (±2) |
| Cloquintocet mexyl | 90 (±4) | 100 (±5) | 110 (±3) | 110 (±4) |
| Fenchlorazole ethyl | 90 (±3) | 110 (±3) | 120 (±3)* | 130 (±3)* |
| Mefenpyr diethyl | 90 (±6) | 110 (±2) | 110 (±3) | 120 (±3)* |