Water relations between leaf water potential, photosynthesis and agronomic vine response as a tool for establishing thresholds in irrigation scheduling

Baeza, Pilar; Sánchez-de-Miguel, P.; Centeno, Ana; Junquera, Pedro; Linares, Rubén; Lissarrague, J.R.

doi:10.1016/j.scienta.2007.06.012

Cited by 56 publications

(38 citation statements)

References 24 publications

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“…González-Altozano and Castel (1999) related the time integral of stem water potential with yield and fruit quality parameters in citrus. Baeza et al (2007) attempted the same approach on vineyards, finding a correlation between a water stress-integral and final berry size, although not with sugar composition. Although the relationships between water stress and fruit quality has been widely studied, the conclusion is that there is a lack of reliable indicators that predict with precision final fruit quality, and therefore there is a need for further research concerning potential fruit quality indicators.…”

Section: Introductionmentioning

confidence: 99%

Detecting water stress effects on fruit quality in orchards with time-series PRI airborne imagery

Suárez

Zarco‐Tejada

González-Dugo

et al. 2010

Remote Sensing of Environment

118

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A methodology for the assessment of fruit quality in crops subjected to different irrigation regimes is presented. High spatial resolution multispectral and thermal airborne imagery were used to monitor crown temperature and the Photochemical Reflectance Index (PRI) over three commercial orchards comprising peach, nectarine and orange fruit trees during 2008. Irrigation regimes included sustained and regulated deficit irrigation strategies, leading to high variability of fruit quality at harvest. Stem water potential was used to monitor individual tree water status on each study site. Leaf samples were collected for destructive sampling of xanthophyll pigments to assess the relationship between the xanthophyll epoxidation state (EPS) and PRI at leaf and airborne-canopy level. At harvest, fruit size, Total Soluble Solids (TSS) and Tritatable Acidity (TA) were measured to characterize fruit quality. A statistically significant relationship between EPS and PRI was found at the leaf (r 2 = 0.81) and canopy level (r 2 = 0.41). Airborne-derived crown PRI calculated from the imagery acquired during the fruit growth was related to the ratio of the total soluble solids normalized by the tritatable acidity (TSS/TA), an indicator of fruit quality measured on the same trees, yielding a coefficient of determination of r 2 = 0.50. The relationship between the integral of PRI time-series and TSS/TA yielded a coefficient of determination of r 2 =0.72(peach) and r 2 = 0.61 (nectarines). On the contrary, the relation between TSS/TA and the time-series of crown thermal imagery was very weak (r 2 = 0.21 and 0.25 respectively). These results suggest that a physiological remote sensing indicator related to photosynthesis, such as PRI, is more appropriate for fruit quality assessment than crown temperature, the established method of water stress detection, which is more related to crown transpiration. A radiative transfer modelling study was conducted to assess the potential validity of this methodology for fruit quality assessment when using medium spatial resolution imagery. The analysis shows important effects of soil and shadows on the PRI vs EPS relationship used for fruit quality assessment if non-pure crown reflectance was extracted from the imagery.

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Section: Introductionmentioning

confidence: 99%

Detecting water stress effects on fruit quality in orchards with time-series PRI airborne imagery

Suárez

Zarco‐Tejada

González-Dugo

et al. 2010

Remote Sensing of Environment

118

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“…Similar values, below -2 MPa in summertime (Kitsaki and Drossopoulos, 2005), have been reported for olive trees grown under rainfed conditions in the Mediterranean area. Considering the conclusions of other research projects carried out with vines where the shoot growth was equal to 0 for leaf water potentials at midmorning of less than -1.18 MPa (Baeza et al, 2007), the rainfed elms under study here were able to grow with major water stress, and leaf water potential demonstrated that Ulmus pumila was highly resistant to drought. A direct relationship between growth and midmorning leaf water potential was obtained in the previously mentioned study about vines (R 2 = 59%).…”

Section: Discussionmentioning

confidence: 50%

Siberian elm responses to different culture conditions under short rotation forestry in Mediterranean areas

Pérez¹,

Pérez²,

Carrasco³

et al. 2014

Turk J Agric For

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This work explores the possibilities of biomass production, for energy purposes, of Siberian elm in Mediterranean areas, including marginal lands with poor soil and low water availability. To achieve this, the influence of soil type, planting density, and water availability on biomass production were analyzed after the first 3 years of the growing cycle in 2 different locations. Moreover, a method to estimate biomass production as a function of some morphological parameters of the trees, as well as the use of leaf water potential as a good indicator of trees' water status, are discussed. The analysis of parameters having an influence on elm growth showed that soil type is the most important factor to obtain a good yield. In soils with enough nutrients and higher water-holding capacity, biomass productions in the range 13-14 Mg DM ha -1 were achieved even under rainfed conditions. In irrigated plots, Siberian elm production was more than double the production of biomass under rainfed conditions; however, significant differences were not found between the 2 different irrigation doses under study. Biomass yield was greater for the highest planting density (6666 plants ha -1 ). Leaf water potential has been shown to be a useful tool for finding out plant water status. Tree growth showed a direct relationship to midmorning leaf water potential, and it was equal to 0 for leaf water potentials lower than -1.83 MPa; this value indicates a great resistance to drought by the species.

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“…El trabajo de Sellés et al (2002) muestra que ejemplares bien regados de ciruelos, almendros o vides presentaban un Ψ xm de entre -0,6 y -1 MPa, sin embargo el Nogal retenía con menor fuerza el agua que circulaba por sus vasos ya que como máximo se alcanzaron potenciales de -0,8 MPa, mientras que el olivo registró, incluso en parcelas bien regadas, unos valores mucho más negativos, alcanzando Ψ xm de entre -1,1 y -1,6 MPa. El crecimiento de las plantas está estrechamente relacionado con los potenciales hídricos, presentando cada especie valores a partir de los cuales su crecimiento se detiene, por ejemplo en el caso de los cerezos Shackel et al (1997) fijaron este punto en un Ψ xm entre -1,5 y -1,7 MPa, mientras que en el caso de las vides Baeza et al (2007) informan de que no hubo crecimiento con Ψ f a media mañana y a mediodía menores de -1,12 y -1,18 MPa respectivamente. Son numerosos los trabajos que se han realizado sobre el estrés hídrico en vides, según Girona et al (2006) las vides estarían bien regadas si presentan Ψ f a mediodía por encima de los -0,8 MPa, entre este valor y -1,2 MPa presentarían un déficit hídrico moderado y por debajo de -1,5 MPa el déficit sería severo.…”

Section: Otros Estudios Sobre El Estrés Hídricounclassified

“…La obtención de valores tan negativos es habitual en especies cultivadas en climas mediterráneos (Kitsaki y Drossopoulos, 2005), presentando cada especie un potencial a partir del cual el crecimiento se detiene. Shackel et al (1997) indicaron que a partir de un Ψ xm de entre -1,5 y -1,7 MPa no existía crecimiento en los cerezos, mientras que en el caso de las vides, Baeza et al (2007) informaron de que con Ψ f a media mañana o a mediodía por debajo de unos -1,2 MPa había también crecimiento cero. Para estimar a partir de que potenciales el crecimiento en el olmo de Siberia se detendría, se realizó una regresión entre los Ψ f a media mañana obtenidos durante los años 2012 y 2013 y los crecimientos mensuales que se producían en AB.…”

Section: Estrés Hídricounclassified

“…), con potenciales por debajo de -2 MPa el crecimiento sería prácticamente nulo en esta especie; si bien hay que tener en cuenta que el modelo que mejor se ajustó (regresión exponencial), presentó solamente un coeficiente R 2 del 47%. Con vides, las relaciones entre producción y crecimiento encontradas por Baeza et al (2007) fueron mejores que las mostradas en el presente trabajo, logrando una variabilidad explicada del 59% en el caso del Ψ f al amanecer y un valor de R 2 del 68% si la relación se realizaba entre el crecimiento de los brotes y el Ψ f a media mañana o a mediodía.…”

Section: Estrés Hídricounclassified

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Evaluación de Ulmus pumila L. y Populus spp. como cultivos energéticos en corta rotación

García¹

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Water relations between leaf water potential, photosynthesis and agronomic vine response as a tool for establishing thresholds in irrigation scheduling

Cited by 56 publications

References 24 publications

Detecting water stress effects on fruit quality in orchards with time-series PRI airborne imagery

Detecting water stress effects on fruit quality in orchards with time-series PRI airborne imagery

Siberian elm responses to different culture conditions under short rotation forestry in Mediterranean areas

Evaluación de Ulmus pumila L. y Populus spp. como cultivos energéticos en corta rotación

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