Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions
(1) Background: Table grapes are often subjected to thermal stress during the growing season, affecting their production. Shading nets utilization has been proposed as an alternative to face this problem, but there is little available information about their effectiveness in hyperarid conditions. IN...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/10/2/176 |
| _version_ | 1797298068012400640 |
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| author | Gastón Gutiérrez-Gamboa Emilio Villalobos-Soublett Marco Garrido-Salinas Nicolás Verdugo-Vásquez |
| author_facet | Gastón Gutiérrez-Gamboa Emilio Villalobos-Soublett Marco Garrido-Salinas Nicolás Verdugo-Vásquez |
| author_sort | Gastón Gutiérrez-Gamboa |
| collection | DOAJ |
| description | (1) Background: Table grapes are often subjected to thermal stress during the growing season, affecting their production. Shading nets utilization has been proposed as an alternative to face this problem, but there is little available information about their effectiveness in hyperarid conditions. INIA-G2 vines were covered with kristall-colored mesh of 8% shade, and their ecophysiological responses were compared to uncovered vines during the daily cycle of two days with contrasting thermic conditions. (2) Methods: Net assimilation rate (A<sub>N</sub>), stomatal conductance (g<sub>s</sub>), transpiration (E), instantaneous water use efficiency (WUE: A<sub>N</sub> E<sup>−1</sup>), stem water potential (Ψ<sub>s</sub>), air temperature (Ta) and vapor-pressure deficit (DPV) were determined in daily cycles (from 06:00 to 20:00 hrs) on two thermally contrasting days (330 DOY at 29.4 °C and 345 DOY at 22.6 °C) on grapevines without water restriction. (3) Results: The Ψ<sub>s</sub> was not affected by treatment and day of measurement; nevertheless, A<sub>N</sub> and g<sub>s</sub> were statistically lower during 330 than 345 DOY (31% and 44% decrease, respectively). The covered vines presented less restrictive climatic conditions in terms of DPV in both DOY, reaching higher WUE values at 10, 12 and 14 h, which was associated with a decrease in E. (4) Conclusions: These results suggest that the use of shading nets can be an interesting alternative to cope with high temperatures in viticulture, improving the water use efficiency of vines. These are the first published results about the viticultural performance of the INIA-G2 variety. |
| first_indexed | 2024-03-07T22:30:26Z |
| format | Article |
| id | doaj.art-3d5ba583b8dc4906acd942969882619d |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-07T22:30:26Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-3d5ba583b8dc4906acd942969882619d2024-02-23T15:18:49ZengMDPI AGHorticulturae2311-75242024-02-0110217610.3390/horticulturae10020176Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid ConditionsGastón Gutiérrez-Gamboa0Emilio Villalobos-Soublett1Marco Garrido-Salinas2Nicolás Verdugo-Vásquez3Instituto de Investigaciones Agropecuarias, INIA Carillanca, Temuco 4780000, ChileInstituto de Investigaciones Agropecuarias, INIA Intihuasi, La Serena 1722093, ChileCentro de Estudios en Zonas Áridas (CEZA), Universidad de Chile, Coquimbo 1780000, ChileInstituto de Investigaciones Agropecuarias, INIA Intihuasi, La Serena 1722093, Chile(1) Background: Table grapes are often subjected to thermal stress during the growing season, affecting their production. Shading nets utilization has been proposed as an alternative to face this problem, but there is little available information about their effectiveness in hyperarid conditions. INIA-G2 vines were covered with kristall-colored mesh of 8% shade, and their ecophysiological responses were compared to uncovered vines during the daily cycle of two days with contrasting thermic conditions. (2) Methods: Net assimilation rate (A<sub>N</sub>), stomatal conductance (g<sub>s</sub>), transpiration (E), instantaneous water use efficiency (WUE: A<sub>N</sub> E<sup>−1</sup>), stem water potential (Ψ<sub>s</sub>), air temperature (Ta) and vapor-pressure deficit (DPV) were determined in daily cycles (from 06:00 to 20:00 hrs) on two thermally contrasting days (330 DOY at 29.4 °C and 345 DOY at 22.6 °C) on grapevines without water restriction. (3) Results: The Ψ<sub>s</sub> was not affected by treatment and day of measurement; nevertheless, A<sub>N</sub> and g<sub>s</sub> were statistically lower during 330 than 345 DOY (31% and 44% decrease, respectively). The covered vines presented less restrictive climatic conditions in terms of DPV in both DOY, reaching higher WUE values at 10, 12 and 14 h, which was associated with a decrease in E. (4) Conclusions: These results suggest that the use of shading nets can be an interesting alternative to cope with high temperatures in viticulture, improving the water use efficiency of vines. These are the first published results about the viticultural performance of the INIA-G2 variety.https://www.mdpi.com/2311-7524/10/2/176gas exchangegrapesINIA-G2protected viticultureshading nets<i>Vitis vinifera</i> |
| spellingShingle | Gastón Gutiérrez-Gamboa Emilio Villalobos-Soublett Marco Garrido-Salinas Nicolás Verdugo-Vásquez Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions Horticulturae gas exchange grapes INIA-G2 protected viticulture shading nets <i>Vitis vinifera</i> |
| title | Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions |
| title_full | Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions |
| title_fullStr | Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions |
| title_full_unstemmed | Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions |
| title_short | Monofilament Shading Nets Improved Water Use Efficiency on High-Temperature Days in Grapevines Subjected to Hyperarid Conditions |
| title_sort | monofilament shading nets improved water use efficiency on high temperature days in grapevines subjected to hyperarid conditions |
| topic | gas exchange grapes INIA-G2 protected viticulture shading nets <i>Vitis vinifera</i> |
| url | https://www.mdpi.com/2311-7524/10/2/176 |
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