Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load
Background and aims: Regulated deficit irrigation and crop load adjustment are viticultural practices used to improve grape and wine composition. Our objective was to evaluate the combined effect of irrigation and crop load levels on leaf photosynthesis, accumulation of non-structural carbohydrates...
| Autores principales: | , , , |
|---|---|
| Formato: | info:eu-repo/semantics/article |
| Lenguaje: | Inglés |
| Publicado: |
2017
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1398 http://onlinelibrary.wiley.com/doi/10.1111/ajgw.12180/abstract |
| _version_ | 1855034797017006080 |
|---|---|
| author | Dayer, Silvina Prieto, Jorge Alejandro Galat Giorgi, Mirta Eugenia Perez Peña, Jorge Esteban |
| author_browse | Dayer, Silvina Galat Giorgi, Mirta Eugenia Perez Peña, Jorge Esteban Prieto, Jorge Alejandro |
| author_facet | Dayer, Silvina Prieto, Jorge Alejandro Galat Giorgi, Mirta Eugenia Perez Peña, Jorge Esteban |
| author_sort | Dayer, Silvina |
| collection | INTA Digital |
| description | Background and aims: Regulated deficit irrigation and crop load adjustment are viticultural practices used to improve grape and wine composition. Our objective was to evaluate the combined effect of irrigation and crop load levels on leaf photosynthesis, accumulation of non-structural carbohydrates and leaf carbon utilisation during the season. Methods and Results: The trial started in 2006 in a Vitis vinifera L. Malbec vineyard in Mendoza. Two irrigation levels (100% and 25% of reference evapotranspiration) and two crop loads (20 and 10 bunches per vine, set at veraison) were studied. During the 2009/10 season, diurnal dynamics of leaf water potential, photosynthesis and carbohydrate concentration were determined at anthesis, veraison and harvest. Deficit irrigation reduced leaf starch concentration at veraison and increased soluble sugars. High-crop load reduced leaf starch concentration at veraison. Starch turnover was correlated with photosynthesis during the previous day. Conclusions: Deficit irrigation had a greater effect on carbon allocation between soluble sugars and starch than on total carbohydrate production. Effects of deficit irrigation and crop load operated independently. Significance of the Study: This experiment improved our knowledge of carbon assimilation and allocation during the season, which may assist the development of management practices to stabilise yield and fruit composition. |
| format | info:eu-repo/semantics/article |
| id | INTA1398 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA13982018-06-21T15:32:58Z Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load Dayer, Silvina Prieto, Jorge Alejandro Galat Giorgi, Mirta Eugenia Perez Peña, Jorge Esteban Vid Almidón Carbohidratos Riego Grapevines Starch Carbohydrates Irrigation Malbec Déficit de Riego Background and aims: Regulated deficit irrigation and crop load adjustment are viticultural practices used to improve grape and wine composition. Our objective was to evaluate the combined effect of irrigation and crop load levels on leaf photosynthesis, accumulation of non-structural carbohydrates and leaf carbon utilisation during the season. Methods and Results: The trial started in 2006 in a Vitis vinifera L. Malbec vineyard in Mendoza. Two irrigation levels (100% and 25% of reference evapotranspiration) and two crop loads (20 and 10 bunches per vine, set at veraison) were studied. During the 2009/10 season, diurnal dynamics of leaf water potential, photosynthesis and carbohydrate concentration were determined at anthesis, veraison and harvest. Deficit irrigation reduced leaf starch concentration at veraison and increased soluble sugars. High-crop load reduced leaf starch concentration at veraison. Starch turnover was correlated with photosynthesis during the previous day. Conclusions: Deficit irrigation had a greater effect on carbon allocation between soluble sugars and starch than on total carbohydrate production. Effects of deficit irrigation and crop load operated independently. Significance of the Study: This experiment improved our knowledge of carbon assimilation and allocation during the season, which may assist the development of management practices to stabilise yield and fruit composition. EEA Mendoza Fil: Dayer, Silvina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Prieto, Jorge Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Galat Giorgi, Mirta Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Perez Peña, Jorge Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina 2017-10-04T12:35:19Z 2017-10-04T12:35:19Z 2016 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/1398 http://onlinelibrary.wiley.com/doi/10.1111/ajgw.12180/abstract 1322-7130 (Print) 1755-0238 (Online) DOI: 10.1111/ajgw.12180 eng info:eu-repo/semantics/restrictedAccess application/pdf Australian journal of grape and wine research 22 (1) : 115–123. (February 2016) |
| spellingShingle | Vid Almidón Carbohidratos Riego Grapevines Starch Carbohydrates Irrigation Malbec Déficit de Riego Dayer, Silvina Prieto, Jorge Alejandro Galat Giorgi, Mirta Eugenia Perez Peña, Jorge Esteban Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title | Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title_full | Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title_fullStr | Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title_full_unstemmed | Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title_short | Leaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load |
| title_sort | leaf carbohydrate metabolism in malbec grapevines combined effects of regulated deficit irrigation and crop load |
| topic | Vid Almidón Carbohidratos Riego Grapevines Starch Carbohydrates Irrigation Malbec Déficit de Riego |
| url | http://hdl.handle.net/20.500.12123/1398 http://onlinelibrary.wiley.com/doi/10.1111/ajgw.12180/abstract |
| work_keys_str_mv | AT dayersilvina leafcarbohydratemetabolisminmalbecgrapevinescombinedeffectsofregulateddeficitirrigationandcropload AT prietojorgealejandro leafcarbohydratemetabolisminmalbecgrapevinescombinedeffectsofregulateddeficitirrigationandcropload AT galatgiorgimirtaeugenia leafcarbohydratemetabolisminmalbecgrapevinescombinedeffectsofregulateddeficitirrigationandcropload AT perezpenajorgeesteban leafcarbohydratemetabolisminmalbecgrapevinescombinedeffectsofregulateddeficitirrigationandcropload |