Interactive effects of high temperature and water deficit on Malbec grapevines
Background and Aims: Studies of the interactive effects of drought and high temperature on the physiological responses of grapevines (Vitis spp.) are scarce. We tested whether well‐watered, potted vines were able to avoid heat waves through evaporative cooling in comparison to those suffering from w...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Wiley
2019
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| Acceso en línea: | https://onlinelibrary.wiley.com/doi/abs/10.1111/ajgw.12398 http://hdl.handle.net/20.500.12123/5794 https://doi.org/10.1111/ajgw.12398 |
| _version_ | 1855483688328888320 |
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| author | Galat Giorgi, Mirta Eugenia Sadras, Victor Oscar Keller, Markus Perez Peña, Jorge Esteban |
| author_browse | Galat Giorgi, Mirta Eugenia Keller, Markus Perez Peña, Jorge Esteban Sadras, Victor Oscar |
| author_facet | Galat Giorgi, Mirta Eugenia Sadras, Victor Oscar Keller, Markus Perez Peña, Jorge Esteban |
| author_sort | Galat Giorgi, Mirta Eugenia |
| collection | INTA Digital |
| description | Background and Aims: Studies of the interactive effects of drought and high temperature on the physiological responses of grapevines (Vitis spp.) are scarce. We tested whether well‐watered, potted vines were able to avoid heat waves through evaporative cooling in comparison to those suffering from water deficit.
Methods and Results: A greenhouse experiment was conducted with own‐rooted Malbec grapevines under two water regimes, well‐watered (100% of pot capacity) and water deficit (50% of pot capacity), and two air temperature regimes, high (45/22°C) and Control temperature (35/20°C). Short‐term stomatal and non‐stomatal regulation of photosynthesis was assessed by measuring leaf gas exchange, stomatal conductance (g s) and chlorophyll fluorescence. Whole‐plant transpiration and vegetative growth were also measured. In well‐watered vines, high air temperature increased g s and leaf transpiration (E leaf), which decreased leaf temperature and increased vegetative growth, whole‐vine transpiration and leaf net photosynthesis (P n). Water deficit strongly reduced growth, P n, g s and E leaf. For vines under high temperature, however, reduction in P n, g s and E leaf was smaller than for that under the Control temperature.
Conclusions: Evaporative cooling may help well‐watered grapevines withstand heat waves and avoid irreversible reduction in gas exchange and chlorophyll fluorescence. |
| format | Artículo |
| id | INTA5794 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA57942019-09-05T13:58:05Z Interactive effects of high temperature and water deficit on Malbec grapevines Galat Giorgi, Mirta Eugenia Sadras, Victor Oscar Keller, Markus Perez Peña, Jorge Esteban Vid Variedades Temperatura Cambio Climático Agua Grapevines Varieties Temperature Climate Change Water Malbec Background and Aims: Studies of the interactive effects of drought and high temperature on the physiological responses of grapevines (Vitis spp.) are scarce. We tested whether well‐watered, potted vines were able to avoid heat waves through evaporative cooling in comparison to those suffering from water deficit. Methods and Results: A greenhouse experiment was conducted with own‐rooted Malbec grapevines under two water regimes, well‐watered (100% of pot capacity) and water deficit (50% of pot capacity), and two air temperature regimes, high (45/22°C) and Control temperature (35/20°C). Short‐term stomatal and non‐stomatal regulation of photosynthesis was assessed by measuring leaf gas exchange, stomatal conductance (g s) and chlorophyll fluorescence. Whole‐plant transpiration and vegetative growth were also measured. In well‐watered vines, high air temperature increased g s and leaf transpiration (E leaf), which decreased leaf temperature and increased vegetative growth, whole‐vine transpiration and leaf net photosynthesis (P n). Water deficit strongly reduced growth, P n, g s and E leaf. For vines under high temperature, however, reduction in P n, g s and E leaf was smaller than for that under the Control temperature. Conclusions: Evaporative cooling may help well‐watered grapevines withstand heat waves and avoid irreversible reduction in gas exchange and chlorophyll fluorescence. EEA Mendoza Fil: Galat Giorgi, Mirta Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina Fil: Sadras, Victor Oscar. South Australian Research & Development Institute; Australia Fil: Keller, Markus. Washington State University. Department of Horticulture; Estados Unidos Fil: Perez Peña, Jorge Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina 2019-09-05T13:55:58Z 2019-09-05T13:55:58Z 2019-06-26 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://onlinelibrary.wiley.com/doi/abs/10.1111/ajgw.12398 http://hdl.handle.net/20.500.12123/5794 1322-7130 1755-0238 https://doi.org/10.1111/ajgw.12398 eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley Australian Journal of Grape and Wine Research 25 (3) : 345-356 (July 2019) |
| spellingShingle | Vid Variedades Temperatura Cambio Climático Agua Grapevines Varieties Temperature Climate Change Water Malbec Galat Giorgi, Mirta Eugenia Sadras, Victor Oscar Keller, Markus Perez Peña, Jorge Esteban Interactive effects of high temperature and water deficit on Malbec grapevines |
| title | Interactive effects of high temperature and water deficit on Malbec grapevines |
| title_full | Interactive effects of high temperature and water deficit on Malbec grapevines |
| title_fullStr | Interactive effects of high temperature and water deficit on Malbec grapevines |
| title_full_unstemmed | Interactive effects of high temperature and water deficit on Malbec grapevines |
| title_short | Interactive effects of high temperature and water deficit on Malbec grapevines |
| title_sort | interactive effects of high temperature and water deficit on malbec grapevines |
| topic | Vid Variedades Temperatura Cambio Climático Agua Grapevines Varieties Temperature Climate Change Water Malbec |
| url | https://onlinelibrary.wiley.com/doi/abs/10.1111/ajgw.12398 http://hdl.handle.net/20.500.12123/5794 https://doi.org/10.1111/ajgw.12398 |
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