Table 3.
Proportions of variance attributed to variety (V), environment (E) and V × E interaction for 2 tartary buckwheat varieties grown in 3 locations a.
| Antioxidant property | Variance component | ||
|---|---|---|---|
| V | E | V × E | |
| DPPH● scavenging activity (μmol Trolox eq./100 g DW) | 33.25 ** | 40.23 ** | 20.37 ** |
| ABTS●+ scavenging activity (μmol Trolox eq./100 g DW) | 31.47 * | 7.42 | n |
| AAC (free phenolics) | 2.45 | 77.36 ** | 6.33 * |
| AAC (bound phenolics) | 0.41 | 16.23 ** | 77.11 ** |
| Total Phenolic Content (μmol of gallic acid eq./100 g DW) | 3.48 * | 18.89 ** | 71.12 ** |
| Total Flavonoid Content (μmol of rutin eq./100 g DW) | 3.40 | 52.01 ** | 27.14 ** |
| Total phenolic acid (mg/100g DW) | 18.86 ** | 66.45 ** | 14.68 ** |
| Rutin (mg/100 g DW) | 6.96 ** | 46.86 ** | 46.13 ** |
| Quercetin (mg/100 g DW) | 19.40 ** | 72.87 ** | 7.69 ** |
| Catechin (mg/100 g DW) | 29.47 ** | 50.79 ** | 19.72 ** |
| p-Hydroxybenzoic acid (mg/100 g DW) | 5.24 ** | 79.19 ** | 5.75 * |
| Ferulic acid (mg/100 g DW) | 4.08 ** | 55.83 ** | 40.08 ** |
| Protocatechuic acid (mg/100 g DW) | 75.67 ** | 5.97 ** | 18.28 ** |
a Results expressed as percent of total variation (mean squares) from factorial design ANOVA using variety and environment as fixed effects. Results with asterisks were significant at P < 0.05; *, significant (P < 0.05); **, highly significant (P < 0.01). AAC, antioxidant activity coefficient. n, no contribution