Table 3. The results (F-value) of two-way analysis of variance on the effects of vintage and cultivation on various polyphenols in grape berries.
| Numbers | Phenolic compounds | Vintage | Cultivation | Vintage*Cultivation |
|---|---|---|---|---|
| A1 | Gallic acid | 0.162 | 1.198 | 0.167 |
| A2 | Protocatechuic acid | 9.236** | 0.039 | 0.587 |
| A3 | p-Hydroxybenzoic acid | 52.021** | 0.101 | 0.234 |
| A4 | Chlorogenic acid | 1.368 | 0.623 | 1.215 |
| A5 | Caffeic aci | 2.758 | 0.410 | 1.038 |
| A6 | Syringic acid | 1.182 | 0.747 | 0.558 |
| A7 | p-Coumaric acid | 10.848** | 0.803 | 0.231 |
| A8 | Ferulic acid | 15.827** | 3.584 | 3.512 |
| A9 | Dihydroquercetin-3-O-glucoside | 3.151 | 7.746** | 4.215* |
| A10 | Myricetin-3-O-glucuronide | 9.991** | 0.888 | 9.267** |
| A11 | Myricetin-3-O-glucoside | 0.660 | 4.264* | 0.072 |
| A12 | Quercetin-3-O-galactoside | 3.912 | 3.918 | 3.301 |
| A13 | Quercetin-3-O-glucuronide | 0.004 | 6.327* | 2.158 |
| A14 | Quercetin-3-O-glucoside | 5.341* | 6.410* | 0.495 |
| A15 | Kaempferol-3-O-galactoside | 1.405 | 1.020 | 0.592 |
| A16 | Kaempferol-3-O-glucuronide | 8.766** | 3.546 | 0.127 |
| A17 | Kaempferol-3-O-glucoside | 1.110 | 1.308 | 0.718 |
| A18 | Isorhamnetin-3-O-glucoside | 8.524** | 1.425 | 5.578* |
| A19 | Quercetin | 31.407** | 0.305 | 0.222 |
| A20 | Catechin | 12.787** | 7.322** | 0.363 |
| A21 | Epicatechin | 23.376** | 2.718 | 0.505 |
| A22 | Epigallocatechin | 0.310 | 0.012 | 4.794* |
| A23 | Epicatechin-3-O-gallate | 42.508** | 0.897 | 0.552 |
** a significance level of p<0.01
* a significance level of p<0.05