Table 3.
Influence of the cultivar, fertilization type, and irrigation regime on the lycopene, polyphenols, and antioxidant activity.
| Treatment | Lycopene (mg·100 g−1 f.w.) | Polyphenols (mg·100 g−1 f.w.) | Antioxidant Activity (mmol Trol·100 g−1 f.w.) | |
|---|---|---|---|---|
| 472 nm | 502 nm | |||
| Cultivar | ||||
| Siriana F1 (S) | 8.91 ± 0.55 | 8.58 ± 0.14 | 1584.95 ± 70.11 b | 78.09 ± 3.91 a |
| HTP F1 (H) | 10.01 ± 0.15 | 9.70 ± 0.64 | 1706.53 ± 1.52 ab | 57.97 ± 0.31 b |
| Inima de Bou (IB) | 10.27 ± 0.70 | 9.85 ± 0.14 | 1801.71 ± 34.83 a | 78.80 ± 0.99 a |
| ns | ns | |||
| Fertilization | ||||
| Chemical (Ch) | 8.84 ± 0.61 b | 8.66 ± 0.24 b | 1702.24 ± 61.83 | 68.38 ± 1.80 b |
| Organic (Og) | 10.62 ± 0.21 a | 10.10 ± 0.21 a | 1693.22 ± 20.27 | 74.87 ± 1.36 a |
| ns | ||||
| Irrigation regime | ||||
| 200 m3·ha−1 | 9.09 ± 0.20 | 8.83 ± 0.12 b | 1736.72 ± 44.28 | 70.98 ± 1.76 |
| 300 m3·ha−1 | 10.38 ± 0.74 | 9.93 ± 0.22 a | 1658.74 ± 62.28 | 72.26 ± 2.80 |
| ns | ns | ns | ||
S—Siriana F1; H—HTP F1; IB—Inima de Bou; Ch—chemical; Og—organic; 200—200 m3·ha−1 (67% ET replenishment); 300—300 m3·ha−1 (100% ET replenishment); ns: not statistically significant. Within each column and within each experimental factor, different letters mean treatments differ significantly according to Tukey’s test at p ≤ 0.05