Table 1.
Sampling time | 2010–2011 vintagea | 2015–2016 vintageb | ||||||
---|---|---|---|---|---|---|---|---|
Ctrl | TD-vc | Ctrl | TD-v | TB-v | TD-m | TB-m | ||
GRAPE PARAMETERS | ||||||||
Berry weight (100 berries) | Veraison | 161.6 | 148.0 | 81.0 ± 4.9 | 79.1 ± 8.0 | 86.0 ± 24.3 | n/ad | n/a |
2 weeks Post Veraison | 185.0 | 190.2 | 121.4 ± 13.4 | 129.28 ± 10.0 | 131.3 ± 12.7 | 126.6 ± 11.1 | 132.9 ± 6.7 | |
4 weeks Post Veraison | 171.2 | 173.8 | 126.1 ± 9.5 | 128.8 ± 17.3 | 134.4 ± 16.1 | 123.8 ± 12.7 | 116.5 ± 20.5 | |
Harvest | 159.8 | 164.4 | 107.4 ± 3.4 | 110.1 ± 9.2 | 119.5 ± 9.3 | 110.4 ± 8.2 | 113.8 ± 7.9 | |
°Brix | Veraison | 14.2 | 13.9 | 11.0 ± 0.3 | 11.4 ± 0.4 | 11.5 ± 0.5 | n/a | n/a |
2 weeks Post Veraison | 18.3 | 17.3 | 16.4 ± 1.4 | 15.7 ± 0.7 | 15.7 ± 0.5 | 15.5 ± 0.4 | 15.3 ± 0.3 | |
4 weeks Post Veraison | 20.8 | 20.2 | 20.7 ± 0.5 | 20.7 ± 0.4 | 20.4 ± 1.0 | 20.6 ± 0.6 | 20.6 ± 0.8 | |
Harvest | 22.0 | 21.2 | 23.2 ± 0.5 | 22.9 ± 0.7 | 23.2 ± 1.0 | 22.5 ± 0.5 | 22.6 ± 0.5 | |
pH | Veraison | 2.84 | 2.81 | 2.71 ± 0.04 | 2.71 ± 0.01 | 2.71 ± 0.06 | n/a | n/a |
2 weeks Post Veraison | 3.06 | 3.02 | 3.19 ± 0.08 | 3.17 ± 0.05 | 3.11 ± 0.09 | 3.12 ± 0.05 | 3.11 ± 0.03 | |
4 weeks Post Veraison | 3.20 | 3.16 | 3.49 ± 0.02 | 3.5 ± 0.09 | 3.48 ± 0.1 | 3.51 ± 0.14 | 3.42 ± 0.04 | |
Harvest | 3.36 | 3.39 | 3.79 ± 0.06b | 3.94 ± 0.23ab | 4.14 ± 0.22a | 4.06 ± 0.1ab | 4.01 ± 0.07ab | |
TA | Veraison | 14.21 | 14.33 | 6.16 ± 0.35 | 6.38 ± 0.35 | 6.84 ± 0.35 | n/a | n/a |
2 weeks Post Veraison | 9.30 | 9.50 | 6.55 ± 0.85 | 6.42 ± 0.63 | 6.78 ± 0.56 | 7 ± 0.59 | 7.05 ± 0.08 | |
4 weeks Post Veraison | 7.70 | 7.75 | 4.49 ± 0.08 | 4.48 ± 0.26 | 4.48 ± 0.29 | 4.43 ± 0.37 | 4.84 ± 0.37 | |
Harvest | 7.25 | 6.60 | 3.84 ± 0.17a | 3.06 ± 0.6b | 2.6 ± 0.22b | 2.59 ± 0.31b | 2.85 ± 0.25b | |
Total anthocyanins (mg/g) | Harvest | 1.68 | 1.28 | 0.7 ± 0.11 | 0.67 ± 0.06 | 0.62 ± 0.06 | 0.67 ± 0.08 | 0.64 ± 0.08 |
Total phenolics (a.u./g) | Harvest | n/a | n/a | 0.35 ± 0.04 | 0.32 ± 0.02 | 0.32 ± 0.03 | 0.34 ± 0.02 | 0.31 ± 0.04 |
WINE PARAMETERS | ||||||||
Total phenolics (a.u.) | Finished Wine | n/a | n/a | 34.78 ± 5.91 | 35.27 ± 5.51 | 37.42 ± 5.49 | 34.78 ± 3.03 | 36.61 ± 3.63 |
Wine color density | Finished Wine | 11.04 | 9.01 | 5.56 ± 0.8 | 5.61 ± 0.57 | 5.5 ± 0.22 | 5.47 ± 0.5 | 5.88 ± 0.6 |
Total red pigments (a.u.) | Finished Wine | 16.78 | 13.06 | 11.24 ± 3.15 | 11.22 ± 2.26 | 12.33 ± 1.9 | 11.77 ± 1.36 | 12.31 ± 2.06 |
Wine color hue | Finished Wine | 0.75 | 0.73 | 0.61 ± 0.04 | 0.62 ± 0.04 | 0.6 ± 0.04 | 0.58 ± 0.03 | 0.6 ± 0.03 |
Degree of red pigment coloration (%) | Finished Wine | 37.67 | 40.00 | 31.86 ± 6.11 | 31.44 ± 3.51 | 28.21 ± 3.29 | 29.5 ± 2.56 | 30.11 ± 2.16 |
Alcohol (% v/v) | Finished Wine | 12.40 | 11.72 | 13.27 ± 0.69 | 12.94 ± 0.43 | 13.28 ± 0.54 | 13.06 ± 0.17 | 13.28 ± 0.24 |
Replicates if Grape samples in each group in the 2010–2011 vintage were mixed in to one sample and analyzed for the biochemical composition.
One-way ANOVA conduced for the samples in the 2015–2016 vintage at p < 0.05, a, b were used to indicate statistically significant differences.
Control group (Ctrl), basal leaves removal at veraison (TB-v) at mid ripeness (TB-m), apical leaves removal at veraison (TD-v) at mid ripeness (TD-m).
n/a, not available.