Table 5.
Color index, firmness, total soluble solids, total polyphenols and total anthocyanins (mean ± SE) of the nectarines harvested in 2017 (N = netted plots, C = un-netted control plots, I = un-netted plots treated with insecticides). In each column for each cultivar, means followed by different letters are significantly different (Amiga* total solid soluble and Fire Top® color index: Tukey’s test, p < 0.05; Fire Top® total solid soluble: Mann–Whitney U test, p < 0.05).
| Cultivar | Treatment | Color Index | Firmness (g cm−2) | Total Soluble Solids (°Brix) | Total Polyphenols (mgGAE 100 g−1) | Total Anthocyanins (mgC3G 100 g−1) |
|---|---|---|---|---|---|---|
| Amiga* | N | 30.8 ± 1.0 | 4.9 ± 0.1 | 8.2 ± 0.1 b | 33.8 ± 2.4 | 7.4 ± 2.0 |
| C | 30.8 ± 1.2 | 4.9 ± 0.1 | 8.6 ± 0.1 a | 31.1 ± 1.9 | 12.3 ± 1.8 | |
| I | 27.8 ± 1.1 | 5.2 ± 0.1 | 8.4 ± 0.1 ab | 29.0 ± 2.3 | 9.5 ± 2.2 | |
| Fire Top® | N | 36.7 ± 1.9 b | 4.2 ± 0.1 | 8.3 ± 0.1 c | 65.4 ± 6.9 | 9.7 ± 2.0 |
| C | 44.9 ± 1.6 a | 4.2 ± 0.1 | 8.7 ± 0.1 b | 51.5 ± 3.7 | 11.0 ± 2.3 | |
| I | 38.0 ± 1.6 b | 4.1 ± 0.1 | 8.9 ± 0.1 a | 47.9 ± 2.0 | 13.3 ± 2.6 |