Clone-environment interaction: stability of clonal aptitudes of 'Barbera' selections in two different growing areas
| Autor: | Mollo A., Santini D., Marchese E., Tragni R., Mannini F. |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | X° International Terroir Congress 2014, pp. 330–335, Tokay-Eger (Hungary), 7-10/07 info:cnr-pdr/source/autori:Mollo A., Santini D., Marchese E., Tragni R., Mannini F./congresso_nome:X° International Terroir Congress 2014/congresso_luogo:Tokay-Eger (Hungary)/congresso_data:7-10%2F07/anno:2014/pagina_da:330/pagina_a:335/intervallo_pagine:330–335 |
| Popis: | Two key factors are important for the agronomic and enological expression of a grapevine selected clone: its genetic aptitudes and the environmental conditions of cultivation. Each clone, in fact, shows a different stability of its characteristics depending on growing factors and this may have relevant economic impact when planting a new vineyard. In order to investigate the attitudinal response of several selections of Barbera, the red grape cultivar most grown in Piedmont (north-west Italy), a study was carried out in two different areas of the Region.The performances of 6 registered clones of Barbera (MI B 34, BA 17, AT 84, AL BA 128, CVT OB 66 and CVT GJ1), selected in different Italian vine growing areas, were compared in two vineyards: the sites, both hilly, differ for climatic conditions and soil structure. Agronomic controls, harvest and small-scale winemaking, wine chemical composition and sensory evaluations were performed for each clone and site during two years (2011 and 2013). The results showed: 1) clones with stable agronomic and enological expressions, such as MI B 34, BA 17, which in both sites resulted high yielding with good grape sugar accumulation and producing wines of high quality or AL BA 128 and AT 84 which, despite the different environment, constantly gave a moderate yield with an ordinary grape sugar content and wines less appreciated by sensorial panel; 2) clones with low stability, such as CVT OB 66, which gave different agronomic and enological results depending to the site of cultivation; 3) clones with an intermediate behaviour, such as CVT GJ1; this clone performed different agronomic characteristics in the two vineyards, but it expressed wine of high quality in both sites. The results indicate how the right choice among clones is an essential tool to improve wine quality as well as the knowledge of environmental stability of clonal characters in order to get the propagation material that better fits the conditions of a new planting. |
| Databáze: | OpenAIRE |
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