Effect of different viticultural techniques on the qualitative and quantitative characters of cv. Xinomavro under vineyard conditions in Naoussa

In order to counteract the various effects of climate change on physiology grapevine and quality grapes leading wine produced, many different approaches have been proposed. The aim this study was assess effect cultivation techniques quantitative qualitative characters cv Xinomavro, during season 2019-2020. experimental vineyard is located in Giannakochori, Naoussa (Greece), where vines are trained bilaterally cordon-trained (bilateral Royat) plant density 4000 vines/ha. following viticultural were evaluated two sub-plots vineyard: (i) training systems (Lyre-shaped system – bilateral southern side rows (vineyard orientation W-E), (ii) planting densities (4000 10000 vines/ha). all samples, sugar content must calculated using a refractometer, active acidity (pH) pH meter total sodium hydroxide solution (NaOH). Mechanical analysis samples under performed. weight thirty (30) berries, grape length width berries each sample measured. use spectrophotometer quantified grape's skin anthocyanins, phenolics, condensed tannins, ortho-diphenols, flavonoids, flavanols, flavonols flavones their antioxidant capacity with FRAP DPPH methods. high-performance liquid chromatography (HPLC) identified most important anthocyanins acids found grapes. measurements seeds made same compounds as skins, except for individual anthocyanins. Differences sugars well phenolic observed treatments. also exhibited differences: originating from Lyre-shaped showed higher concentration soluble solids while those Royat recorded pH. right vines, which more exposed temperatures (due wind), concentrations compounds. Planting differences almost especially Moreover, results increased solids, pH, phenolics thus making coming these ideal maturing ageing.