Developmental changes in tomato fruit composition in response to water deficit and salinity

Mitchell, J. P.; Shennan, Carol; Grattan, S. R.

doi:10.1111/j.1399-3054.1991.tb01299.x

Cited by 119 publications

(80 citation statements)

References 26 publications

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“…The major advantage of DI was an improvement in quality in terms of TSS, VC, and acidity [13] . Reduced irrigation treatments (RDI and PRD) resulted in generally improved fruit quality in relation to FI, as reported by Mitchell et al [54] . An ANOVA showed that there was a significant difference in TSS (p<0.05), VC (p<0.05), and TA (p<0.05) of tomato between different treatments in both years.…”

Section: Resultssupporting

confidence: 60%

“…The water stress applied to the crop led to an increase in dry matter and sugar concentrations of ripe fruit. These phenomena have been explained by the fact that water stress did not affect the quantity of dry matter accumulated by the fruit, although it greatly reduces its accumulation of water [54] . Ho et al [55] explained this phenomenon by an increase in the phloem sap concentration, as well as by a decrease in its flux, both resulting from a reduction in the water available in the plant.…”

Section: Resultsmentioning

confidence: 99%

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Assessing effects of deficit irrigation techniques on water productivity of tomato for subsurface drip irrigation system

Hashem¹,

El-Abedin²,

Al-Ghobari³

2018

International Journal of Agricultural and Biological Engineering

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Water resources are subjected to ever-increasing supply constraints due to extensive agricultural water demand for irrigated lands. Therefore, water-saving irrigation strategies need to be explored. The present study was conducted to explore the possibilities of using regulated deficit irrigation (RDI) and partial root zone drying irrigation (PRD) methods as water-saving irrigation techniques for subsurface irrigation. The objective of this study are to assess the effects of RDI and PRD irrigation on the water productivity of vegetable crops (tomato) under SSD systems in arid climatic conditions, and to compare the responses of tomato crops to PRD, RDI, and FI under an SSD system in terms of productivity, crop quality, and the amount of water saved. The field experiment was conducted during the fall 2014-2015 and 2015-2016 Citation: Hashem M S, El-Abedin T Z, Al-Ghobari H M. Assessing effects of deficit irrigation techniques on water productivity of tomato for subsurface drip irrigation system. Int J Agric & Biol Eng, 2018; 11(4): 156-167.

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 99%

Assessing effects of deficit irrigation techniques on water productivity of tomato for subsurface drip irrigation system

Hashem¹,

El-Abedin²,

Al-Ghobari³

2018

International Journal of Agricultural and Biological Engineering

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“…Finally, water availability is another crucial factor with a major influence on water and dry matter accumulation in the fruit. While water deficit (whether induced by drought or increased salinity) generally leads to higher dry matter contents, and sugar and acid concentrations (Mizrahi, 1982;Mitchell et al, 1991;Veit-Köhler et al, 1999;Plaut et al, 2004), this is mostly due to a decrease in water influx and thus fresh weight. This means a loss of revenue for the grower and is hence unwanted.…”

Section: Introductionmentioning

confidence: 99%

“…Water deficit due to drought or due to increased salinity (electric conductivity, EC) are known to impact the fruit water and carbon balance differently (Mitchell et al, 1991). However, these particular conditions have not often been studied simultaneously (Mitchell et al, 1991;Plaut et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Application of drought and salt stress can improve tomato fruit quality without jeopardising production

Wal¹,

Meulebroek²,

Steppe³

2017

Acta Hortic.

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High-tech tomato greenhouse systems, which are the standard in Northern Europe (especially in Belgium and the Netherlands), mainly aim for high yields, up to 60 kg m -2 . However, quality should be considered equally important, as consumers are willing to pay higher prices per kg for a high quality product. Influencing the plant water status is acknowledged to strongly influence fruit quality, as water deficit or increased salinity may result in higher dry matter content, a main determinant of tomato quality. Unfortunately, this increase in quality is often associated with a decrease in fresh yield, making a thorough insight on the controlling factors of both aspects critical if one aspires to optimise the final product value. The objective of the current research was therefore to combine plant water status monitoring with the assessment of an array of fruit quality parameters and yield, for both drought and salinity treatments in order to further clarify this interrelationship. To this end, we set up an experiment in a controlled greenhouse environment, where tomato plants (Solanum lycopersicum 'Dirk') were exposed to four different treatments: control, drought stress, and two levels of salt stress (EC levels of 4 and 6 dS cm -1 ). Plant water status was monitored by measuring stem water potential. Furthermore, fruit yield, as well as a set of fruit quality parameters (hexose sugars content, organic acids content, and firmness) was evaluated. Results showed that fruit quality does benefit from both drought and increased salinity, and that the highest salinity level scored the best on all measured quality aspects. Moreover, we observed that even small water deficits, induced either by mild drought or salt stress, improved fruit quality, without jeopardising yield. The acquired insights, combined with mechanistic modelling, may ultimately lead to a more efficient greenhouse management with higher quality tomatoes.

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“…The importance of plant water status to guarantee a good production and quality of greenhouse tomato (Solanum lycopersicum L.) has been emphasized by many authors (Mitchell et al, 1991;Johnson et al, 1992;Cuartero and Fernandez-Munoz, 1999;De Swaef et al, 2012). Tomato fruit growth results from the influx of water, carbon and minerals through the xylem and the phloem, which is driven by a gradient in hydrostatic and osmotic potential between the stem and the fruit.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Sap Flow Dynamics Through the Tomato Peduncle Using a Non-Invasive Sensor Based on the Heat Field Deformation Method

Hanssens¹,

Swaef²,

Nadezhdina³

et al. 2013

Acta Hortic.

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Recent contradicting evidence on the contributions of xylem and phloem to tomato fruit growth highlights the need for a more thorough insight into the dynamics of sap flow through the tomato peduncle. In fact, knowledge on sap flow dynamics through small plant parts remains scarce, due to a lack of direct measurements. Most currently available sap flow sensors use needles, making them inappropriate for the direct measurement of sap flow through small plant parts such as a tomato peduncle. Therefore, a non-invasive sap flow sensor based on the heat field deformation (HFD) principle was tested on the peduncle of a tomato truss. This mini HFD sensor, consisting of a heater element and three thermocouples stitched on insulation tape, was wrapped around the peduncle and allowed continuous monitoring of changes in the heat field around the heater caused by sap flow. Actual influx into the tomato truss was calculated based on fruit growth data and estimates of fruit transpiration and was compared with the dynamics measured with the mini HFD sensor. Additionally, heat girdling of the peduncle was performed to block phloem influx to study the dynamics of xylem and phloem influx using the mini HFD sensor. First results of the mini HFD sensor were promising and the measured sap flow dynamics through the tomato peduncle agreed well with the calculated sap influx. Results of the girdling experiment suggested opposite patterns of xylem and phloem influx, with a decreased xylem influx during the daytime. Furthermore, the pattern of xylem influx revealed a close relation with the total water potential in the stem. As such, the mini HFD sensor provided direct measurements of sap flow dynamics through a tomato peduncle and, hence, has a large potential to finally resolve the controversy on water influx into developing fruits.

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Developmental changes in tomato fruit composition in response to water deficit and salinity

Cited by 119 publications

References 26 publications

Assessing effects of deficit irrigation techniques on water productivity of tomato for subsurface drip irrigation system

Assessing effects of deficit irrigation techniques on water productivity of tomato for subsurface drip irrigation system

Application of drought and salt stress can improve tomato fruit quality without jeopardising production

Measurement of Sap Flow Dynamics Through the Tomato Peduncle Using a Non-Invasive Sensor Based on the Heat Field Deformation Method

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