New argentine seedless varieties INTA

Abstract

The Table Grapes Breeding Program of the National Institute of Agricultural Technology (INTA), Argentina, has developed eight seedless cultivars: Delicia INTA, Fernandina INTA, Serena INTA, Sorpresa INTA, Revelación INTA, Esperanza INTA, Resistencia INTA and Grandeza INTA. Between 2016 and 2018 these cultivars were registered in the National Cultivar Registry of the Argentina National Seed Institute. In subsequent production cycles, before registration, organoleptic and agronomic characters and various management practices effects were assessed. Likewise, postharvest performance was analyzed to determine export potential. The cultivars produce berries of 18 to 22 mm diameter. Forty-five days after cold storage, they still show acceptable values of shattering, firmness, and stem browning. Delicia INTA is a late-harvest variety, with pink berries and an intense muscatel flavor. Fernadina INTA, Sorpresa INTA, and Revelación INTA open the possibility of exporting black grapes. Sorpresa INTA stands out for the large size and unique flavor of its berries, while Fernandina INTA and Revelación INTA, late harvest varieties, do so due to their capacity to support a high crop load without losing quality. Serena INTA produces firm red grapes as Crimson Seedless variety, but the harvest is before, which allows for the expansion of the seasonal availability of this type of grapes. Esperanza INTA, Grandeza INTA (early harvest), and Resistencia INTA (late harvest) are White varieties. Esperanza INTA and Grandeza INTA are characterized by obtaining large berries. At the same time, Resistencia INTA stands out for its high resistance to pathogen attack in seasons prone to developing diseases such as.