Table 3.
Proportions (in %) of Na+ and Cl− excreted at the leaf surface (‘Out’) or remaining inside the lamina (‘In’) in the leaves of Atriplex halimus issued from a coastal site (Monastir) or an inland area (Sbikha) and exposed for 10 d to control nutrient solution or to a nutrient solution containing 40 or 160 mm NaCl or 15 % PEG
| Na+ (distribution in %) |
Cl− (distribution in %) |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 ABA |
+ ABA |
+ FLU |
0 ABA |
+ ABA |
+ FLU |
||||||||
| In | Out | In | Out | In | Out | In | Out | In | Out | In | Out | ||
| Control | Monastir | 68·8 | 31·2 | 67·0 | 33·0 | 82·2 | 17·8 | 71·5 | 28·5 | 64·1 | 35·9 | 77·1 | 22·9 |
| Sbikha | 74·7 | 25·3 | 66·2 | 33·8 | 78·7 | 21·3 | 70·6 | 29·4 | 70·8 | 29·2 | 84·4 | 15·6 | |
| 40 mm NaCl | Monastir | 58·6 | 41·4 | 55·8 | 44·2 | 79·8 | 20·2 | 62·8 | 37·2 | 59·7 | 40·3 | 72·7 | 27·3 |
| Sbikha | 70·2 | 29·8 | 59·6 | 40·4 | 84·5 | 15·5 | 79·7 | 20·3 | 61·6 | 38·4 | 82·5 | 17·5 | |
| 160 mm NaCl | Monastir | 49·7 | 50·3 | 48·5 | 51·5 | 71·7 | 28·3 | 54·2 | 45·8 | 50·8 | 49·2 | 73·9 | 26·1 |
| Sbikha | 69·1 | 30·9 | 51·7 | 48·3 | 76·1 | 23·9 | 77·5 | 22·5 | 58·7 | 41·3 | 79·7 | 20·3 | |
Plants were maintained in the absence (0 ABA) or in the presence (+ ABA) of 50 µm ABA or 50 µm fluridone (+ FLU) in the nutrient solution. Measurements were performed on fully expanded leaves. Each value is the mean of six replicates.