Water relation response to soil chilling of six olive (Olea europaea L.) cultivars with different frost resistance

Pérez-López, D.; Gijón, M.C.; Mariño, Jorge Gago; Moriana, A.

doi:10.5424/sjar/2010083-1279

Cited by 8 publications

(12 citation statements)

References 33 publications

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“…However, they did not observe the phenomenon under low night (2.5 ± 0.4 and 5.2 ± 0.4 ºC) but ambient day (16.2 ± 3.2 ºC) soil temperatures. On the other hand, the study of Pérez-López et al (2010) reported differences in sensitivity to soil chilling between six cultivars. This work describes the effects of low temperatures in two consecutive winters on a mature hedgerow olive orchard in Southern Spain.…”

Section: Introductionmentioning

confidence: 97%

“…The only studies characterizing the effects of chilling on water relations of olive trees are those conducted with one-year-old potted trees by Pavel and Fereres (1998) and Pérez-López et al (2010). The former found reductions in both stomatal conductance and stem and leaf water potentials whereas they encountered increases in R root when trees were steadily exposed to soil temperatures below 6.4 ± 0.5 ºC.…”

Section: Introductionmentioning

confidence: 99%

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Low winter temperatures induce a disturbance of water relations in field olive trees

López-Bernal

García-Tejera

Testi

et al. 2015

Trees

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Author contribution statement AL, OG, LT, FO and FJV designed the experiments. AL and OG carried out the fieldwork. AL, OG, LT, FO and FJV analyzed the data and prepared the manuscript. Conflict of interestNone. Key MessageLow winter temperatures induce an increase in the soil-to-trunk hydraulic resistance of field-grown olive trees resulting in a significant disturbance of their water relations. AbstractA disturbance of water relations in response to chilling have long been observed in potted plants growing under controlled conditions, but information is lacking for field plants. The aim of this study was to assess the effects of winter low temperatures on the water relations of mature olive trees. To this end, water potential, sap flux density, soil temperature and meteorological data were monitored in a hedgerow olive orchard near Córdoba, southern Spain, throughout two consecutive winters. Water stress symptoms were found in terms of midday Ψ despite adequate water supply and low evaporative demand. These effects were associated with changes in the soil-to-trunk hydraulic resistance (R root ), which increased by December-January to much higher values than those previously reported in the literature, particularly in the year of higher fruit load. The contribution of viscosity (η) to the observed R root dynamics was almost negligible as deduced from measurements of soil temperature, so the high winter values of R root were likely to have originated from other causes such as reductions in membrane permeability and root growth.The findings of this work raise new major issues that deserve further research such as the impact of the winter water stress on stomatal conductance and photosynthesis rates in mature olive trees.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Low winter temperatures induce a disturbance of water relations in field olive trees

López-Bernal

García-Tejera

Testi

et al. 2015

Trees

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“…This evergreen species is one of the most important crops in the Mediterranean basin, where they cover around 10.5 Mha (FAOSTAT 2017). Earlier studies on olive trees demonstrated that low temperatures produce a disturbance of water relations, often evidenced by low water potentials occurring even under low evaporative demand and adequate soil water content (Pavel and Fereres 1998, Pérez-López et al 2010, López-Bernal et al 2015. This chilling-induced dehydration has been reportedly linked to increases in Rp in olive and other sensitive species (Aroca et al 2012, Centeno et al 2018.…”

Section: So Far Not Much Attention Has Been Given To the Characterization Of Intra-specific Variability Inmentioning

confidence: 99%

“…A high Rp could imply an impaired water uptake and slow plant growth, but it may still be a desirable trait in dry environments if the so-reduced water uptake results in higher soil water availability during critical periods at the end of the crop cycle. On the other hand, genotypic differences in Rp have been associated with differences in chilling sensitivity (Aroca et al 2001) and frost resistance (Pérez-López et al 2010).…”

Section: So Far Not Much Attention Has Been Given To the Characterization Of Intra-specific Variability Inmentioning

confidence: 99%

Genotypic variability in radial resistance to water flow in olive roots and its response to temperature variations

et al. 2020

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As radial root resistance (Rp) represents one of the key components of the soil–plant–atmosphere continuum resistance catena modulating water transport, understanding its control is essential for physiologists, modelers and breeders. Reports of Rp, however, are still scarce and scattered in the scientific literature. In this study, we assessed genetic variability in Rp and its dependence on temperature in five widely used olive cultivars. In a first experiment, cultivar differences in Rp at 25 °C were evaluated from flow–pressure measurements in excised roots and subsequent analysis of root traits. In a second experiment, similar determinations were performed continually over a 5-h period in which temperature was gradually increased from 12 to 32 °C, enabling the assessment of Rp response to changing temperature. Despite some variability, our results did not show statistical differences in Rp among cultivars in the first experiment. In the second, cultivar differences in Rp were not significant at 12 °C, but they became so as temperature increased. Furthermore, the changes in Rp between 12 and 32 °C were higher than those expected by the temperature-driven decrease in water viscosity, with the degree of that change differing among cultivars. Also, Rp at 25 °C reached momentarily in the second experiment was consistently higher than in the first at that same, but fixed, temperature. Overall, our results suggest that there is limited variability in Rp among the studied cultivars when plants have been exposed to a given temperature for sufficient time. Temperature-induced variation in Rp might thus be partly explained by changes in membrane permeability that occur slowly, which explains why our values at 25 °C differed between experiments. The observed cultivar differences in Rp with warming also indicate faster acclimation of Rp to temperature changes in some cultivars than others.

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“…To evaluate the irrigation management, the midday stem water potential (Ψ md ) was measured using a pressure chamber (PMS Instruments Co., Model 1000, Corvallis, OR, USA). A chosen shoot (two per tree, one tree per replicate) containing five to six pairs of leaves was encased in a plastic bag and then wrapped in aluminum foil for (at least) 2 h before being cut [33,34]. In addition, a LI-COR gas analyzer (Li-6400, LI-COR Inc., Lincoln, NE, USA) was used to measure stomatal resistance (r st ) on two leaves that were directly exposed to the sun and were located on the mid-section of the tree [35].…”

Section: Study Site Descriptionmentioning

confidence: 99%

Implementation of a Two-Source Model for Estimating the Spatial Variability of Olive Evapotranspiration Using Satellite Images and Ground-Based Climate Data

Fuentes-Peñailillo

Ortega-Farías

Acevedo-Opazo

et al. 2018

Water

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A study was carried out to evaluate the potential use of the two-source Shuttleworth and Wallace (SW) model to compute the intra-orchard spatial variability of actual evapotranspiration (ET) of olive trees using satellite images and ground-based climate data. The study was conducted in a drip-irrigated olive orchard using satellite images (Landsat 7 ETM+), which were acquired on clear sky days during the main phenological stages (2009/10 growing season). The performance of the SW model was evaluated using instantaneous latent heat flux (LE) measurements that were obtained from an eddy correlation system. At the time of satellite overpass, the estimated values of net radiation (Rn i) and soil heat flux (G i) were compared with ground measurements from a four-way net radiometer and soil heat flux plates, respectively. The results indicated that the SW model subestimated instantaneous LE (W m −2) and daily ET (mm d −1), with errors of 12% and 10% of observed values, respectively. The root mean square error (RMSE) and mean absolute error (MAE) values for instantaneous LE were 26 and 20 W m −2 , while those for daily values of ET were 0.31 and 0.28 mm d −1 , respectively. Finally, the submodels computed Rn i and G i with errors of between 4.0% and 8.0% of measured values and with RMSE and MAE between 25 and 39 W m −2 .

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Water relation response to soil chilling of six olive (Olea europaea L.) cultivars with different frost resistance

Cited by 8 publications

References 33 publications

Low winter temperatures induce a disturbance of water relations in field olive trees

Low winter temperatures induce a disturbance of water relations in field olive trees

Genotypic variability in radial resistance to water flow in olive roots and its response to temperature variations

Implementation of a Two-Source Model for Estimating the Spatial Variability of Olive Evapotranspiration Using Satellite Images and Ground-Based Climate Data

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