Tomato Quality: Potential for Developing Cultivars With Improved Flavor

Stevens, M. Allen

doi:10.17660/actahortic.1979.93.30

Cited by 23 publications

(18 citation statements)

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“…Concentrations of dry matter, soluble solids, fructose, glucose, titratable acids, volatile compounds, minerals, carotene and vitamin C in fresh fruit increase with increasing salinity [5,51,52,71,94,96,134,154,165,168,169,173]. Gough and Hobson [73] found that for cluster tomato grown in NFT at EC's of 3.0, 5.0 and 8.0 mS⋅cm -1 , the most flavourful fruit was produced under an EC of 5 mS⋅cm -1 .…”

Section: Organoleptic and Nutraceutic Propertiesmentioning

confidence: 99%

Influence of electric conductivity management on greenhouse tomato yield and fruit quality

2001

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-The osmotic and ionic effects of the electrical conductivity (EC) of the nutrient solution and its interactions with climatic factors and cultural practices on tomato yield and fruit quality are reviewed. Adjusting the salinity of the nutrient solution allows growers to modify water availability to the crop and hence improve fruit quality. At some point, however, increases in salinity limit marketable yield. Under high ECs, fruit size is inversely related to EC while the dry matter content of the fruit is linearly increased by the EC. The exact rate of yield decline varies with interactions between cultivars, environmental factors, composition of the nutrient solution, and crop management. According to different studies and growth conditions, salinities higher than 2.3-5.1 mS⋅cm -1 result in an undesirable yield reduction, while ECs of 3.5-9.0 mS⋅cm -1 improve tomato fruit quality. Manipulating the indoor climate such as humidity, temperature and ambient CO 2 level may offset the negative effect of high salinity on yield and fruit quality such as blossom-end rot. The light intensity received by the plant directly affects the quantity of photoassimilates available to the fruit, it also increases their sugar: acid ratio, and influences the transpiration rate and the water uptake by the plant, which in turn, affect the EC around the root. Increasing the EC with NaCl reduces titratable acids, potassium and nitrogen in the fruit but also increases their sodium content. NaCl enhances the sweetness of tomato fruit and improves the overall flavour intensity. Depending upon the composition of the saline solution, ion toxicities or nutritional deficiencies may arise because of a predominance of specific ion or competition effects among cations and anions. Keeping the proper nutrient levels and ratios between all the nutrients in the root environment for each growth stage of a crop should be targeted in order to achieve high yields and high quality products throughout the cropping season. Several EC and fertigation management regimes could improve fruit quality and are presented in this review.Lycopersicon esculentum / tomato / electrical conductivity / salinity / fruit quality / greenhouse Résumé -Influence de la régie de la conductivité électrique de la solution nutritive sur le rendement et la qualité de la tomate de serre. Cette revue de littérature porte sur les effets osmotiques et ioniques de la conductivité électrique (CE) de la solution nutritive et de ses liens avec les facteurs climatiques et culturaux sur le rendement et la qualité de la tomate de serre. L'ajustement de la salinité de la solution nutritive permet aux producteurs de modifier la disponibilité en eau pour la plante de façon à contrôler la qualité des fruits. Cependant, des salinités élevées affectent le rendement vendable. Sous une haute CE, le calibre des fruits est inversement relié à la CE alors que le contenu en matière sèche des fruits augmente linéairement avec la CE. Le taux de réduction du rendement varie selon les interactions e...

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Section: Organoleptic and Nutraceutic Propertiesmentioning

confidence: 99%

Influence of electric conductivity management on greenhouse tomato yield and fruit quality

2001

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“…fruit quality, there is a strong focus on the capacity of fruit cells to accumulate and store carbohydrate (Stevens et al 1977;Stevens 1979;Hewitt & Stevens 1981;Jones & Scott 1983;Hewitt & Garvey 1987). In normal ripe tomato fruit, glucose and fructose are the major soluble sugars and the major contributors to soluble solids (Davies & Hobson 1981).…”

Section: Introductionmentioning

confidence: 99%

Protoplast hexose carrier activity is a determinate of genotypic difference in hexose storage in tomato fruit

Ruan

Patrick

Brady

1997

Plant Cell & Environment

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Post-phloem sugar transport in developing tomato (Lycopersicon esculentum Mill. cv. Flora-Dade) fruit follows an apoplastic route during the rapid phase of sugar accumulation. The pathway is characterized by sugar retrieval by the storage parenchyma cells from the fruit apoplast. Two tomato genotypes differing in fruit hexose content were compared in terms of the transport and transfer processes controlling fruit sugar levels. The genotypic difference in fruit sugar content was independent of photoassimilate export from source leaves. Discs of pericarp tissue were cultured in a medium based on analyses of the fruit apoplastic sap. The cultured discs maintained a composition, a relative growth rate and a respiration rate similar to those of the pericarp tissue of intact fruit. Estimates of hexose fluxes into metabolic and storage pools suggested that membrane transport regulated the genotypic difference in hexose accumulation. Short-term ['"^Clhexose uptake experiments demonstrated a genotypic difference in V^^^ for glucose, fructose and 3-O-methylglucose, and this difference was abolished in the presence of the inhibitor /7-chloromercuribenzenesulphonic acid (PCMBS). The results support the hypothesis that the activity of energized hexose carriers on the plasma membranes of storage parenchyma cells is a signiflcant determinate of the genotypic difference in hexose accumulation.

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“…Concentrations of dry matter, soluble solids, titratable acidity, volatile compounds, minerals, carotene and vitamin C in fresh fruit increase with increasing salinity (Tuzel et al, 2001;Dorais et al, 2000;Sonneveld and Welles, 1988;Stevens, 1979).…”

Section: Discussionmentioning

confidence: 99%

Variety Trial on Tomato Hybrids in Greenhouse Conditions of the Prearal Area of Kazakhstan

Dyamurshayeva

Kudiyarov

Бобренко

et al. 2017

OnLine Journal of Biological Sciences

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One of the most important factors in the intensification of greenhouse tomato production is the introduction of new high-yielding hybrids which are adapted to new technologies and unfavorable climatic conditions. The present investigation was carried out in the Korkyt Аta Kyzylorda State University greenhouse between 2010 and 2015, to study the performance of different tomato hybrids in terms of growth, yield and quality inside the greenhouse in the PreAral area conditions in Kazakhstan. Seventeen tomato hybrids selected from the Netherlands, Israel and Russia were grown on a substrate of sawdust in the conditions of the extended culture. Based on the results obtained, the most productive hybrids and those best adapted to the climatic conditions of the area are identified and the fruits' quality assessment and cost-effectiveness analysis are given. The best yield and fruit quality results were obtained from hybrids from the Dutch selection. The best variety for all indicators -productivity, yield of standard products, fruit taste and largest profit -was the Panekra hybrid. Lilos F1, Maxitos F1, Gravitet F1, Klepton F1, Esmira F1 and Clarabella F1 hybrids also had high productivity, good fruit quality and relatively high profit. These hybrids are recommended for greenhouse soilless culture in PreAral area conditions.

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Tomato Quality: Potential for Developing Cultivars With Improved Flavor

Cited by 23 publications

References 0 publications

Influence of electric conductivity management on greenhouse tomato yield and fruit quality

Influence of electric conductivity management on greenhouse tomato yield and fruit quality

Protoplast hexose carrier activity is a determinate of genotypic difference in hexose storage in tomato fruit

Variety Trial on Tomato Hybrids in Greenhouse Conditions of the Prearal Area of Kazakhstan

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