6533b7d9fe1ef96bd126c2e6
RESEARCH PRODUCT
Defoliation of two-wire vertical trellis: effect on grape quality
Maria Gabriella BarbagalloMarica MazzaP. ScafidiAntonino PisciottaMark O. Downeysubject
0106 biological sciencesCanopyTitratable acidcordon positionHorticultureRipeness01 natural sciencesanthocyanin040501 horticultureVeraisonchemistry.chemical_compoundanthocyanins; Cabernet Sauvignon; canopy management; condensed tannins; cordon position; leaf removal;Soluble solidsBotanycondensed tanninMathematicsleaf removalCabernet Sauvignon04 agricultural and veterinary sciencesTrellis (architecture)Settore AGR/15 - Scienze E Tecnologie AlimentariSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeHorticulturechemistryAnthocyaninComposition (visual arts)0405 other agricultural sciencescanopy managementAgronomy and Crop Science010606 plant biology & botanydescription
ABSTRACTBasal leaves were removed from Cabernet Sauvignon vines trained to a two-wire vertical trellis at fruit set and at veraison. Leaf removal did not modify total soluble solids and titratable acidity at harvest. Defoliation at fruit set of lower cordon recovered the grape anthocyanin composition gap between upper and lower cordons and that produced a positive effect on anthocyanin synthesis. Hence, control of the upper cordon and defoliation of fruit set of the lower cordon treatments showed comparable values of anthocyanins. Defoliation at veraison did not produce any appreciable effect. This study shows that skin anthocyanin composition in a two-wire vertical trellis can be modified by leaf removal in the fruit zone of the lower cordon, reducing variability in the ripeness between the two cordons.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-18 |