Table II.
Effect of channel blockers on release of potassium from P. vulgaris seed coat halves
| Treatment | K+ Efflux % of Control |
|---|---|
| TEACl (10 mm) | 107 ± 5 |
| CsCl (10 mm) | 148 ± 8 |
| BaCl2 (10 mm) | 132 ± 9 |
| CaCl2 (10 mm) | 102 ± 4 |
| GdCl3 (5 mm) | 76 ± 3 |
| LaCl3 (10 mm) | 74 ± 3 |
Data was expressed as percentage of K+ released compared with control. Four seed coat halves per replicate; corresponding halves between control and treatment washed in 5-mL volumes of bath solution (see Walker et al., 1995); washout solution 300 mOsmol, pH 6 with 5 mm MES; initial 0- to 10-min washout 3 × 3 min, thereafter changed at 10-min intervals.