Table 1.
Micro- and macro-nutrients in ‘Pineapple’ sweet orange phloem sap measured using ICP (n = 5).
| Element (isotope monitored) | Centrifuge-exudate(mM) | EDTA-enhancedexudatem mol/kg fwt |
|---|---|---|
| B | 0.05 ± 0.03 | ND |
| Na | 2.20 ± 0.34 | ND |
| Mg | 15.07 ± 2.29 | 8.52 ± 4.30 |
| K | 38.83 ± 5.31 | 29.27 ± 6.7 |
| Ca | 89.84 ± 12.88 | 64.99 ± 26.05 |
| Mn | 0.11 ± 0.02 | 0.18 ± 0.09 |
| Fe | 0.04 ± 0.01 | 0.04 ± 0.05 |
| Ni | 0.01 ± 0.00 | Trace |
| Cu | 0.06 ± 0.01 | 0.02 ± 0.02 |
| Zn | 0.10 ± 0.02 | 0.06 ± 0.04 |
| Mo | Trace | ND |
| Ba | Trace | ND |
| Pa | 23.50 ± 4.90 | 13.71 ± 2.95 |
| Sa | 8.50 ± 3.95 | 2.30 ± 1.06 |
a
P and S were analyzed by ICP-OES, while the rest of the elements were analyzed by ICP-MS.