Open Access
Table 1
Statistics of the correlations of tartaric acid content at harvest with the thermal indices of May (C=Chardonnay, PG=Pinot Gris, M=Merlot, G=Glera)
| Thermal index | Linear regression |
|---|---|
| TN (mean of daily minimum temperatures) | y = 0.107x + 5.6 R2 = 0.794; PG |
| y = 0.152x + 5.4 R2 = 0.752; M | |
| TG (mean of daily mean temperatures) | y = 0.072x + 5.4 R2 = 0.738; C |
| y = 0.103x + 5.0 R2 = 0.907; PG | |
| y = 0.149x + 4.6 R2 = 0.876; M | |
| y = 0.123x + 3.5 R2 = 0.811; G | |
| TX (mean of daily maximum temperatures) | y = 0.065x + 5.1 R2 = 0.746; C |
| y = 0.094x + 4.7 R2 = 0.903, PG | |
| y = 0.137x + 4.0 R2 = 0.904, M | |
| y = 0.115x + 3.0 R2 = 0.813, G | |
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