Comparación de la cámara de presión tipo Scholander modelo Pump-up respecto a la cámara de presión tradicional en vides de mesa

Pavez, Rodrigo Gálvez; Rodríguez, Rodrigo Callejas; Reginato, G.

doi:10.4067/s0718-34292011000200023

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Several techniques are available to assess the water status of plants via physiological indicators [17,18]. Leaf water potential is recognized as one of the most important indexes to evaluate the water status of plants, providing high theoretical value and important information for multiple applications to quantify critical physiological processes, including drought responses [19][20][21]. Predawn leaf water potential (PLWP) and stem water potential (SWP) were found to be simple and precise indicators for assessing the grapevine water status [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

European Grapevine Cultivars and Rootstocks Show Differential Resistance to Xylella fastidiosa Subsp. fastidiosa

Martínez,

Lacuesta,

Relloso

et al. 2023

Horticulturae

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Several Xylella fastidiosa subsp. fastidiosa (ST1) strains that cause Pierce’s disease were isolated from grapevine in Spain. In this study, we applied an approach to assess PD susceptibility among 24 different well-known Vitis vinifera subsp. vinifera cultivars and five rootstocks belonging to different species of the genus Vitis. Both were commonly commercialized, representing about 75% of the cultivated area in Spain. This method incorporated disease severity, disease progression, and water potential from the stem xylem. The trials were carried out under field and greenhouse conditions. The virulence of the Xff strain XYL 2055/17 was significantly higher than that of strain XYL 2177/18. However, while this difference in strain virulence did not seem to modify the susceptibility profiles of the cultivars, disease severity could be climate dependent. This work established two significantly different groups of European cultivars of grapevine characterized by high and low susceptibility to Xff ST1: cultivars with high susceptibility, including reference cultivars such as Tempranillo and Tempranillo Blanco, and cultivars with high resistance, such as Hondarrabi Zuri and Cabernet Sauvignon. Cultivar susceptibility was independent of the rootstock on which they were grafted. No conclusive data were found regarding the potential of water loss as an early detection test prior to symptom onset. This study provides a framework with which to advance cultivar susceptibility studies under different environmental conditions.

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Section: Introductionmentioning

confidence: 99%

European Grapevine Cultivars and Rootstocks Show Differential Resistance to Xylella fastidiosa Subsp. fastidiosa

Martínez,

Lacuesta,

Relloso

et al. 2023

Horticulturae

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Irrigation schedule on table grapes by stem water potential and vapor pressure deficit allows to optimize Water Use

Gálvez

Callejas

Reginato

et al. 2014

Ciência Téc. Vitiv.

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SUMMARYThis study tested the relationship between stem water potential (ψ stem ) and vapor pressure deficit (VPD) in order to evaluate its use as reference for irrigation control of table grape (Vitis vinifera) cvs. Thompson Seedless and Redglobe. Two trials were carried out on consecutive seasons. In the first season the treatments consisted of four different irrigation regimes: T1, plants irrigated at 100% of ETc; T2, irrigated until fruit set the same as T1 but after fruit set every other time T1; T3, plants with no irrigation from fruit set to harvest; and T4, plants irrigated at 50% of ETc throughout the growing season. Vines from T1 always showed a higher ψ stem for a wide VPD range, therefore the ψ stem and VPD relationship was established using T1 vines, obtaining a logarithmic function with a high determination coefficient (R 2 =0.85). The following season this relationship was used to control irrigation frequency on two table grape cvs. Irrigation started when vines had 20 cm shoots and then the irrigation amount was set to replenish 10% of soil available water. Trial 1 was conducted on cv. Thompson Seedless and consisted of two treatments: T1 plants irrigated to satisfy 100% ETc and T2 plants irrigated according to the previously obtained ψ stem -VPD reference line. Trial 2 was established with Redglobe cv. plants using three treatments: T1 plants irrigated to satisfy 100% Etc; T2, plants irrigated the same as T1 but after fruit set every other time T1; and T3, plants irrigated according to the ψ stem -VPD reference line previously obtained. Irrigation frequency determined using the ψ stem -VPD relationship reduced total water volume compared to T1 on both trials, with no effects on yield or quality, showing the feasibility of using this relationship to control irrigation frequency. RESUMOEste trabalho incidiu na análise da relação entre o potencial hídrico xilemático (ψ stem ) e o déficit de pressão de vapor (VPD), para utilizá-la como referência na programação de irrigação em uva de mesa (Vitis vinifera) das variedades Thompson Seedless e Redglobe. Foram realizados dois ensaios em temporadas consecutivas. Na primeira temporada os tratamentos consistiram em quatro regimes de irrigação: T1, plantas irrigadas com 100% de ETc; T2, plantas irrigadas igual ao T1 até a frutificação e depois uma vez a cada duas irrigações deT1: T3, plantas sem irrigação entre a frutificação e a colheita; e T4, plantas irrigadas com 50% de ETc durante toda a temporada. As plantas de T1 apresentaram sempre valores mais altos de ψ stem para uma ampla gama de VPD, portanto, a relação ψ stem -VPD foi estabelecida utilizando plantas de T1, obtendo uma função logarítmica com um alto coeficiente de determinação ((R 2 =0.85). Na subsequente temporada esta relação foi utilizada para controlar a frequência de irrigação em duas variedades de uva de mesa. A quantidade de irrigação foi estabelecida para repor 10% de humidade aproveitável. O ensaio 1 foi realizado na variedade Thompson Seedless e baseou-se em dois tratamentos: T1, plantas...

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Remote sensing tools for monitoring water requirements and water stress in vineyards and fruit trees

Ortega-Farías

Fuentes-Peñailillo

Gutter

et al. 2022

2022 IEEE International Conference on Automation/XXV Congress of the Chilean Association of Automatic Control (ICA-ACCA)

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Comparación de la cámara de presión tipo Scholander modelo Pump-up respecto a la cámara de presión tradicional en vides de mesa

Cited by 4 publications

References 7 publications

European Grapevine Cultivars and Rootstocks Show Differential Resistance to Xylella fastidiosa Subsp. fastidiosa

European Grapevine Cultivars and Rootstocks Show Differential Resistance to Xylella fastidiosa Subsp. fastidiosa

Irrigation schedule on table grapes by stem water potential and vapor pressure deficit allows to optimize Water Use

Remote sensing tools for monitoring water requirements and water stress in vineyards and fruit trees

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