Table 5.
The molar ratios of His:Cu, His:Fe, His:Zn and His:Mn in cucumber leaves. Plants were harvested after 5 days of treatment with excess Cu (Cu), excess Cu and Si supply (Cu + Si), excess Cu and additional Fe supply (Cu + Fe) or combined excess Cu and additional Fe and Si supply (Cu + Fe + Si); control plants (C) remained untreated.
| Treatment | His:Cu | His:Fe | His:Zn | NA:Mn |
|---|---|---|---|---|
| C | 1.3:1 | 0.1:1 | 0.2:1 | 0.3:1 |
| Cu | 1.1:1 | 0.5:1 | 0.7:1 | 1.2:1 |
| Cu + Si | 2.2:1 | 0.7:1 | 1.1:1 | 1.9:1 |
| Cu + Fe | 4.6:1 | 0.7:1 | 1.2:1 | 1.8:1 |
| Cu + Fe + Si | 4.9:1 | 0.6:1 | 1.2:1 | 1.7:1 1 |
1 The values are means of four replicates.