Table 4.
Importance of evaluated factors on phenolics content of grapevine vegetative parts according to the sensitivity analysis on the developed neural network models.
| Element | VSRa | |||||
|---|---|---|---|---|---|---|
| Organ | Month | Cultivar | TRC | TFC | TAA | |
| Gallic acid | 57.00 | 22.95 | 21.54 | 15.55 | 13.04 | 2.37 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| Catechin | 77.62 | 23.30 | 19.84 | 5.68 | 1.88 | 1.69 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| p-coumaric acid | 23.34 | 17.98 | 12.94 | 2.19 | 2.17 | 2.02 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| Rutin | 88.00 | 36.63 | 35.95 | 9.36 | 5.67 | 1.88 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| Isoquercitrin | 34.04 | 17.36 | 14.92 | 2.31 | 1.10 | 1.33 |
| Rank | 1 | 2 | 3 | 4 | 6 | 5 |
| m-coumaric acid | 15.62 | 9.83 | 7.71 | 1.42 | 1.32 | 1.28 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| o-coumaric acid | 27.64 | 14.70 | 10.99 | 1.73 | 1.45 | 3.35 |
| Rank | 1 | 2 | 3 | 5 | 6 | 4 |
| Coumarin | 19.77 | 11.66 | 7.46 | 1.60 | 1.37 | 1.26 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| Resveratrol | 41.27 | 15.17 | 10.65 | 3.27 | 1.28 | 1.21 |
| Rank | 1 | 2 | 3 | 4 | 5 | 6 |
| Quercetin | 39.54 | 16.33 | 11.76 | 1.08 | 4.70 | 1.16 |
| Rank | 1 | 2 | 3 | 6 | 4 | 5 |
| Naringenin | 21.37 | 8.46 | 6.91 | 1.20 | 2.33 | 1.03 |
| Rank | 1 | 2 | 3 | 5 | 4 | 6 |
| Kaempferol | 68.86 | 10.78 | 7.03 | 1.43 | 3.48 | 1.20 |
| Rank | 1 | 2 | 3 | 5 | 4 | 6 |
aRelative indication of the ratio between the variable sensitivity error and the error of the model when all variables are available.