Table 2.
Effects of irrigation on the concentration of triterpenoids in fruits, leaves, stems and roots of cv. Picual olive trees.
| Compound | Fruit | Leaf | Stem | Root | ||||
|---|---|---|---|---|---|---|---|---|
| Irrigation (IR) | Water-Stressed (WS) | Irrigation (IR) | Water-Stressed (WS) | Irrigation (IR) | Water-Stressed (WS) | Irrigation (IR) | Water-Stressed (WS) | |
| Maslinic acid mg/g dry weight | 6.00 ± 0.30 | 8.39 ± 3.53 * | 3.28 ± 0.53 | 2.98 ± 0.22 | 2.10 ± 0.13 | 1.82 ± 0.28 | 0.015 ± 0.004 | 0.016 ± 0.008 |
| mg/g fresh weight | 2.91 ± 0.20 | 3.53 ± 0.33 * | 1.81 ± 0.44 | 1.36 ± 0.16 | 1.02 ± 0.08 | 1.00 ± 0.27 | 0.008 ± 0.003 | 0.010 ± 0.006 |
| Oleanolic acid mg/g dry weight | 3.13 ± 0.16 | 4.20 ± 0.30 * | 18.92 ± 2.61 | 21.83 ± 2.31 | 7.17 ± 0.58 | 6.30 ± 0.78 | 0.060 ± 0.021 | 0.051 ± 0.022 |
| mg/g fresh weight | 1.71 ± 0.08 | 1.98 ± 0.26 | 10.00 ± 1.36 | 10.50 ± 2.44 | 3.38 ± 0.37 | 2.99 ± 0.93 | 0.032 ± 0.013 | 0.031 ± 0.015 |
| Betulinic acid g/g dry weight | nd | nd | nd | nd | nd | nd | 1.133 ± 0.382 | 1.013 ± 0.370 |
| mg/g fresh weight | nd | nd | nd | nd | nd | nd | 0.627 ± 0.013 | 0.604 ± 0.271 |
| Erythrodiol mg/g dry weight | nd | nd | 0.92 ± 0.30 | 1.29 ± 0.21 | 1.00 ± 0.05 | 0.47 ± 0.14 * | nd | nd |
| mg/g fresh weight | nd | nd | 0.48 ± 0.14 | 0.58 ± 0.10 | 0.47 ± 0.04 | 0.24 ± 0.12 * | nd | nd |
| Uvaol mg/g dry weight | nd | nd | 2.05 ± 0.48 | 2.88 ± 0.44 | 0.31 ± 0.06 | 0.29 ± 0.07 | nd | nd |
| mg/g fresh weight | nd | nd | 0.48 ± 0.11 | 1.34 ± 0.12 * | 0.15 ± 0.03 | 0.16 ± 0.06 | nd | nd |
Values are means ± standard error of the mean. In each row and/or each organ, for comparisons between the irrigation and water stress conditions, values followed by * are significantly different (p < 0.05).