Optimization of the ripening time of new varieties descendants of Monastrell
Given the impact of climate change on viticulture in the Region of Murcia, this paper attempts to expose the possibility of using genetic improvement as a dilemma that allows access to new descendant varieties of the autochthonous variety Monastrell crossed with varieties such as Syrah and Cabernet. Sauvignon, thus obtaining hybrids (Gebas and Myrtia). In it, the chromatic parameters and the phenolic profile of the new varieties will be compared with those obtained by the Monastrell variety at two moments during maturation (12 and 14 º Baumé), to check if the results would allow earlier harvests in these new varieties thus avoiding the decoupling between phenolic and technological maturity, while improving the quality of grapes and wines.
The results showed how the new varieties Gebas (a cross between Monastrell and Cabernet Sauvignon) and Myrtia (a cross between Monastrell and Syrah) always presented concentrations of phenolic compounds, as well as values of their chromatic parameters, higher than those of the Monastrell variety at any given time of maturation. Furthermore, when comparing the two new varieties with each other, Myrtia was characterized by its high concentration of anthocyanins, while Gebas was characterized by its tannins, although both showed very high values for both parameters.
Therefore, we could have new varieties to offer to the wine sector, in warm areas like ours, adapted to the new climatic scenario and that improve the quality of the autochthonous varieties.
This study was supported by the European Regional Development Fund (“A way to make Europe”) through FEDER 14-20-04 and FEDER 14-20-29 research projects.
Issue: ICGWS 2023
1 Instituto Murciano de Investigación y Desarrollo Agrario y Medioambiental
2 Instituto de Ciencias de la Vid y del Vino
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breeding program, grape, wine, quality, ripening, phenolic composition