Table 7.
Proportions of mean grape skin terminal subunits in 2010/2011 and 2011/2012 seasons. Means in columns followed by a different letter are significantly different within one season.
| 2010/2011 | 2011/2012 | ||||||
|---|---|---|---|---|---|---|---|
| Treatment | C | EC | ECG | Treatment | C | EC | ECG |
| Standard (control) | 79.2 ± 17.7 b | 9.9 ± 9.3 b | 10.4 ± 11.7 a | Standard (control) | 83.9 ± 11.7 a | 15.5 ± 12.7 | 3.1 ± 3.1 b |
| Leaf removal west | 79.6 ± 18.3 b | 14.6 ± 13.1 a | 5.8 ± 6.9 b | Leaf removal west | 81.7 ± 12.7 ab | 15.3 ± 10.9 | 3.1 ± 3.9 b |
| STD-UV-B | 84.8 ± 13.6 a | 8.8 ± 10.0 b | 6.4 ± 6.9 b | LR (-UV-B, -PAR) | 61.2 ± 1 2.2 c | 15.6 ± 13.7 | 21.6 ± 13.2 a |
| LRW-UV-B | 86.4 ± 12.8 a | 3.9 ± 7.6 c | 8.7 ± 9.5 a | LR (-UV-B, 2xUHI) | 79.8 ± 15.2 b | 17.0 ± 14.1 | 3.2 ± 2.3 b |
| Significance | *** | *** | *** | Significance | *** | ns | *** |
Percent composition of proanthocyanidin terminal skin subunits C, (+)-catechin; EC, (−)-epicatechin; ECG, (−)-epicatechin-3-O-gallate. STD (shaded/control); LRW (leaf removal west); STD with decreased UV-B radiation (STD-UV-B); LRW with decreased UV-B radiation (LRW-UV-B); LR (-UV-B, -PAR) (leaf removal with decreased UV-B radiation and 2xOp50 UV sheets added on both sides of the bunch zone); LR-UV-B, 2xUHI (leaf removal with decreased UV-B radiation and 2xUHI UV sheets added on both sides of the bunch zone). Different letters indicate significant differences at p ≤ 0.05, 0.01, and 0.001, respectively; ns, not significant.