The Effect of Elicitors and Canopy Management in the Chemical Composition of Vitis vinifera Red Varieties in Warm and Hot Areas in Spain
| Autor: | José Antonio Suárez-Lepe, Juan Manuel Del Fresno, Carlos Escott, Antonio Morata, Leyre López-de-Silanes, Iris Loira, Natalia Gutiérrez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Canopy sprawling system shoot trimming pigments Microclimate Climate change 01 natural sciences Vineyard 03 medical and health sciences Pigment accumulation Sugar polyphenols 030304 developmental biology inactivated yeast 0303 health sciences Vitis vinifera Global warming Agriculture Horticulture climate change Shoot Environmental science Agronomy and Crop Science microclimate 010606 plant biology & botany |
| Zdroj: | Agronomy, Vol 11, Iss 1192, p 1192 (2021) Agronomy Volume 11 Issue 6 |
| ISSN: | 2073-4395 |
| Popis: | Canopy management practices in vineyards, such as sprawling systems and shoot trimming, can change the accumulation of metabolites in grapes. The use of elicitors of biological origin on grapevines of Vitis vinifera red grape varieties may also modulate the chemical composition of the berries. These modifications are often observed in the accumulation of phenolic compounds, including pigments. Both technical approaches are alternatives involved in minimizing the effects of global climate change in warm areas. The increase of temperature related to climate change accelerates the accumulation of sugars, but produces unbalanced grapes. This work establishes the use of button sensors to monitor the climate changes occurring at grape cluster level. Together with climate monitoring, conventional instrumental analytical techniques are used to follow up the chemical composition and the phenolic fraction of grapes in four different production areas in Spain. The effect of either treatment seems variable and to be affected by external factors besides the treatment itself and the climate conditions. While there is a fine effect that correlates with the use of elicitors in varieties like Merlot and Tempranillo, there is minimal improvement observed in Tintilla de Rota. The total phenolic index increases were between 2.3% and 11.8% in the first two parcels. The same happened with the vineyard’s canopy management systems, with increased pigment accumulation and the total phenolic index rising (37.7% to 68.7%) after applying intense shoot trimming, or a variation in sugar concentrations when using sprawl conduction. This study aims to provide viticulturists and oenologists in particular, and farmers in general, with data on the field regarding the use of alternative sustainable practices in the cultivation of grapes. The techniques used involved 100% natural products without adjuvants. The benefits obtained from applying some of these practices would be to produce technically mature grapes despite climate changes, and the elaboration of more balanced wines. |
| Databáze: | OpenAIRE |
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