Publicação
Evaluation of the enological potential of three resistant varieties in the region of Veneto
| Resumo: | In Italy now the plantation of 36 resistant varieties of vine is authorized, among them 24 are allowed in Veneto region. Resistant varieties come from the crossing between Vitis vinifera and other species of Vitis with a different origin, in which the repetitive cross with Vitis vinifera allow to contain in their genome about 95% of vinifera genetic material. After each cross, the selection of individuals is made following the resistance to different pathogens, mainly oidium and mildew, even though some selection was obtained with partial resistance to Botrytis, to acetic rot and to some climatical conditions. In this work we followed the microvinification of 3 resistant varieties in collaboration with Veneto Agricoltura agency, analyzing different parameters. All the work was done just for research, because Veneto Agricoltura is a regional research agency and doesn’t produce wines with the purpose of commercialization. As a matter of fact, even though the resistant varieties are allowed for wine production, their introduction is very recent and much research are still to be performed. The three varieties studied are: Cabernet Cortis, Prior and Johanniter, being the first two red, and the other white. With Cabernet Cortis the harvest was made in three different periods and with Prior in two different moments, to evaluate the total and diglucoside anthocyanins accumulation during ripening; with Johanniter a base wine for sparkling wine production was prepared and used for a second fermentation in autoclave (Martinotti method) in blend at 5%, 10% and 15% with Glera (Prosecco grape variety) base wine. These experimental vinifications were compared with a Prosecco prepared with 100% Glera 100%, in order to evaluate in which way Johanniter can alter the profile of this iconic wine. |
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| Autores principais: | Nunes, Daniel Rodrigues |
| Assunto: | Sustentabilidade Variedades resistentes |
| Ano: | 2023 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Trás-os-Montes e Alto Douro |
| Idioma: | inglês |
| Origem: | Repositório da UTAD |
| Resumo: | In Italy now the plantation of 36 resistant varieties of vine is authorized, among them 24 are allowed in Veneto region. Resistant varieties come from the crossing between Vitis vinifera and other species of Vitis with a different origin, in which the repetitive cross with Vitis vinifera allow to contain in their genome about 95% of vinifera genetic material. After each cross, the selection of individuals is made following the resistance to different pathogens, mainly oidium and mildew, even though some selection was obtained with partial resistance to Botrytis, to acetic rot and to some climatical conditions. In this work we followed the microvinification of 3 resistant varieties in collaboration with Veneto Agricoltura agency, analyzing different parameters. All the work was done just for research, because Veneto Agricoltura is a regional research agency and doesn’t produce wines with the purpose of commercialization. As a matter of fact, even though the resistant varieties are allowed for wine production, their introduction is very recent and much research are still to be performed. The three varieties studied are: Cabernet Cortis, Prior and Johanniter, being the first two red, and the other white. With Cabernet Cortis the harvest was made in three different periods and with Prior in two different moments, to evaluate the total and diglucoside anthocyanins accumulation during ripening; with Johanniter a base wine for sparkling wine production was prepared and used for a second fermentation in autoclave (Martinotti method) in blend at 5%, 10% and 15% with Glera (Prosecco grape variety) base wine. These experimental vinifications were compared with a Prosecco prepared with 100% Glera 100%, in order to evaluate in which way Johanniter can alter the profile of this iconic wine. |
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