The effect of different vigour olive clones on growth, dry matter partitioning and gas exchange under water deficit

Vaio, Claudio Di; Marra, Francesco Paolo; Scaglione, Giampiero; Mantia, Michele La; Caruso, Tiziano

doi:10.1016/j.scienta.2011.11.001

Cited by 21 publications

(14 citation statements)

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“…Multiple studies have reported on the threshold for this relationship [23,26,43]. Generally, the best fit, in accordance to our study, is positive and exponential [44][45][46] but also linear [23] and logistic regressions were observed [26].…”

Section: Discussionsupporting

confidence: 91%

“…The irrigation was supplied from June, every 7-10 days. At the beginning of July, irrigation was stopped for a number of days until the midday Ψ SWP decreased below −2.5 MPa [7,26]. A re-watering period followed.…”

Section: Methodsmentioning

confidence: 99%

“…More severe water deficits (stage II and III) strongly and directly affect net photosynthesis [18,[25][26][27][28] and the tree's ability to recover from stress [29,30].…”

Section: Introductionmentioning

confidence: 99%

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Gas Exchanges and Stem Water Potential Define Stress Thresholds for Efficient Irrigation Management in Olive (Olea europea L.)

Marino

Caruso

Ferguson

et al. 2018

Water

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With climate change and decreased water supplies, interest in irrigation scheduling based on plant water status is increasing. Stem water potential (Ψ SWP) thresholds for irrigation scheduling in olive have been proposed, however, a physiologically-based evaluation of their reliability is needed. A large dataset collected at variable environmental conditions, growing systems, and genotypes was used to characterize the relation between Ψ SWP and gas exchanges for olive. Based on the effect of drought stress on the ecophysiological parameters monitored, we described three levels of stress: no stress (Ψ SWP above about −2 MPa), where the high variability of stomatal conductance (g s) suggests a tight stomatal control of water loss that limit Ψ SWP drop, irrigation volumes applied to overcome this threshold had no effect on assimilation but reduced intrinsic water use efficiency (iWUE); moderate-stress (Ψ SWP between about −2.0 and −3.5 MPa), where iWUE can be increased without damage to the photosynthetic apparatus of leaves; and high-stress (Ψ SWP below about −3.5 MPa), where g s dropped below 150 mmol m −2 s −1 and the intercellular CO 2 concentration increased proportionally, suggesting non-stomatal limitation to photosynthesis was operative. This study confirmed that olive Ψ SWP should be maintained between −2 and −3.5 MPa for optimal irrigation efficiency and to avoid harmful water stress levels.

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Section: Discussionsupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Gas Exchanges and Stem Water Potential Define Stress Thresholds for Efficient Irrigation Management in Olive (Olea europea L.)

Marino

Caruso

Ferguson

et al. 2018

Water

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“…Indeed, water stress has been shown to influence olive stem water potential (Di Vaio et al ., ), transpiration rate (Boughalleb & Hajlaoui, ) and stomatal conductance (Doupis et al ., ), as well as maximal photochemical efficiency of PSII (Petridis et al ., ) and density of foliar tissue (Guerfel et al ., ). Our results for ‘Konservalia’ cultivar are in agreement with the results obtained in previous experiments on the other reported olive cultivars.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of different mulch materials for reducing soil surface evaporation in semi‐arid region

Farzi

Gholami

Baninasab

et al. 2017

Soil Use and Management

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In recent years, the use of new mulches for soil water conservation in arid regions has been introduced as an alternative to conventional (plastic) mulches. However, systematic studies concerning the effects of different organic [pistachio shell mulch (PSM), wheat straw mulch, de-oiled olive pomace mulch (DOM) or wood chips mulch], chemical [superabsorbent polymer (HM) or organicbased emulsion polymer (PEM)] and mineral [gravel mulch (GM)] covers on soil and water conservation are scarce. Therefore, two experiments were carried out. Experiment 1 was aimed at evaluating the effects of mulches of different composition on soil surface evaporation, whereas in experiment 2 we investigated the effects of this decrease in soil evaporation due to different mulch materials on some olive tree physiological responses to soil drying. We analysed stem water potential, transpiration rate, stomatal conductance, leaf density and maximum efficiency of photosystem II photochemistry (Fv/Fm) of 2-yr-old plants of 'Konservalia' olive, grown in pots in open field. The results showed that different mulch materials had different efficiency on soil water conservation and DOM and pistachio shell mulch PSM -as new mulch materials -seems more favourable for conserving soil water. Water stress caused reductions in all parameters measured and increment in leaf density compared with unstressed treatment. Olive plants grown using different soil mulch presented higher values of stem water potential, transpiration rate, stomatal conductance and Fv/Fm ratio compared to control plants. Although all the mulch treatments improved the water content of soil, DOM and PSM were found to be superior in maintaining optimum soil water content for olive use.

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“…Nevertheless, water stress is not the only parameter that affects dry matter distribution in the plant; in particular, many agronomic and genetic factors, such as rootstock, cultivar, training system, pruning and planting density have been shown to influence growth and to modify the distribution of biomass between roots and canopy (canopy/roots ratio) and between the different plant organs (Caruso et al, 1997(Caruso et al, , 2001(Caruso et al, , 2008Zucconi, 1992;Xiloyannis et al, 2007;Di Vaio et al, 2012;Weibel and Reighard, 2012;Yano et al, 2002).…”

Section: T100% T50%mentioning

confidence: 99%

Ecophysiological Responses of Two Olive Tree Cultivars (Olea europaea L. CV Koroneiki and Chemlali) Under Three Water Treatments

Hassine

Boussadia

Bchir

et al. 2017

ESJ

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In this paper, our objective is to assess and compare the effects of three levels of irrigation application on the ecophysiological behavior and plant dry matter accumulation of two young olive tree cultivars Koroneiki, a promising greek cultivar, and Chemlali, the best local cultivar. According to this assessment, we can determine the most efficient water treatment that could be suitable for Mediterranean environments subjected to water shortage conditions. Measurements were made in the green house of the Tunisian Olive tree Institute under normal day-light conditions from March, 16th to April, 21st 2015. Three water treatments were applied which are T100% (control treatment: Daily irrigation at 100% of Available Water Content (AWC)), T50% (Daily irrigation at 50% of AWC) and T0% (Without watering). The results showed that the two olive tree cultivars possess important mechanisms to overtake limited water resources. However, some striking variations existed between the two cultivars studied. Indeed, as water stress increased (T0%), Chemlali maintained longer a high midday leaf water potential compared (- 4.54 MPa) to Koroneiki (- 5.8 MPa). T50% treatment seems to be sufficient for both cultivars. Measurements of total Osmotic Adjustment (OA) showed that olive trees use this mechanism to create very negative leaf water potentials in order to be able to extract water from a dry root environment. The root/shoot ratio of Chemlali plants at T50% treatment was the highest (1.08) comparatively with the other two treatments (0.70 and 0.79 for T100% and T0% AWC water treatments, respectively). This result shows that Chemlali plants valorize low quantities of water (T50%) rather than high quantities (T100%) and Koroneiki plants behave better when it is irrigated at 100% AWC. To conclude, Chemlali plants irrigated at 50% AWC, compared to Koroneiki plants, are the most suitable to tolerate water restriction conditions.

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The effect of different vigour olive clones on growth, dry matter partitioning and gas exchange under water deficit

Cited by 21 publications

References 50 publications

Gas Exchanges and Stem Water Potential Define Stress Thresholds for Efficient Irrigation Management in Olive (Olea europea L.)

Gas Exchanges and Stem Water Potential Define Stress Thresholds for Efficient Irrigation Management in Olive (Olea europea L.)

Evaluation of different mulch materials for reducing soil surface evaporation in semi‐arid region

Ecophysiological Responses of Two Olive Tree Cultivars (Olea europaea L. CV Koroneiki and Chemlali) Under Three Water Treatments

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