Effect of Soil Water Deficit on Vitamin C, Sugar, Organic Acid, Amino Acid and Carotene Contents of Large-fruited Tomatoes.

Zushi, Kazufumi; Matsuzoe, Naotaka

doi:10.2503/jjshs.67.927

Cited by 64 publications

(39 citation statements)

References 4 publications

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“…Our results are consistent with previous reports that ascorbic acid, which is synthesized from a sugar, increases along with fruit sugar (Sato et al, 2006;Zushi and Matsuzoe, 1998). Our results are also consistent with previous reports that titratable acid in tomato fruit subjected to salt treatment is higher than in controls (Sato et al, 2006;Saito et al, 2009).…”

Section: +supporting

confidence: 83%

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Johkan

Nagatsuka

Yoshitomi

et al. 2014

J. Japan. Soc. Hort. Sci.

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To produce tomato fruits with 6% average Brix without decreasing yield, we investigated the effect of moderate salinity stress on Brix and yield in a single-truss, high-density tomato production system. Because tomato fruit development can be predicted from cumulative temperature, we also assessed cumulative temperature after anthesis as a potential indicator for determining the starting points of salinity stress treatments. When transverse diameters of the first fruit reached 4 cm (i.e., early increase treatment) or the first fruits were at the mature green stage (i.e., late increase treatment), nutrient solution electrical conductivity was slowly increased until the breaker stage from 1.8 dS·m -1 to 6.0 dS·m -1. Plants subjected to the late increase treatment produced tomato fruits with Brix values of 6% without reductions in marketable yield. We also increased nutrient solution electrical conductivity based on cumulative temperature after anthesis and found that early-treated plants produced tomatoes with higher Brix levels and yields than late-treated plants. In summary, moderate salinity stress to avoid excessive stress on plants increased sugar concentrations without decreasing fruit yield and resulted in tomato fruits with average Brix of about 6% when nutrient solution electrical conductivity was increased at a rate of 0.1 dS·m. Because seasonal differences in cumulative temperature influence the appropriate timing of salinity stress applications, further study is needed to optimize year-round growth under moderate salinity stress in single truss, high-density tomato production systems.

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Section: +supporting

confidence: 83%

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Johkan

Nagatsuka

Yoshitomi

et al. 2014

J. Japan. Soc. Hort. Sci.

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“…We hypothesise that this is areaction to the initial stress to the reed due to extreme flooding during summer 1999. Similar results from other plant species support this concIusion of a stress-induced increase in the amino acid content (Sircelij et al , 1999;Zushi and Matsuzoe, 1998). Furthermore, in recent investigation it was shown that reed plants grown in flooded parts of a fen area revealed a significantly higher total amino acid content together with a lower total content of carbohydrates than those in unflooded areas (Koppitz, 2004).…”

Section: Discussionsupporting

confidence: 72%

Amino acids as indicators of physiological stress in common reed Phragmites australis affected by an extreme flood

et al. 2004

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The effects of extreme flooding at Lake Constance on the content and composition of amino acids in Phragmites australis were studied at nine reed stands with different degrees of damage. Following the flood damage. we discovered a complex die-back syndrome which is characterised by a decrease in total culm density from 32 to 4 culms m-2 , an increase in percentage of secondary shoots by 70% and decline in mean culm biomass by 27 g dry wt. Furthermore, areduction of total carbohydrates by 60%, starch by 56--70% and soluble sugars by 49-59% in the vertical and horizontal storage rhizomes was found, together with changes in the composition of amino acids in the basal culm internodes. Within primary shoots from extremely damaged reed stands we found a significant increase in the total content of amino acids (150 versus 40 \-Lmol amino acid g-I dry wt. in undamaged stands). Asparagine (Asn) contributed one ofthe largest fractions to total amino acids, on average about 25% in undamaged reed stands. In contrast, the main amino acid of primary shoots from extremely damaged reeds was not Asn 05%) but -y-aminobutyric acid (Gaba). (ts share was 36% in primary shoots and 48% in insect-infested primary shoots, respectively. This is the highest Gaba content reported in P. australis. The significant increase in the share of -y-aminobutyric acid in shoots from extremely damaged reed stands was accompanied by an increase in alanine. These

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“…On the other hand, the physiological state of tomato fruit at harvest and electrical conductivity (EC) of the growing medium have more significant effects on tomato quality (Thybo et al 2005). Salt enrichment in nutrient solution is known to increase TSS and ascorbic acid content (Petersen et al 1998, Zushi & Matsuzoe 1998, De Pascale et al 2001, Fanasca et al 2007). Generally, all the three growing media used in the experiment -coconut fiber, wood fiber and rockwool, proved their suitability in tomato soil-less cultivation, in respect to their influence on the fruit quality traits.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Growing Medium and Harvest Time on the Biological Value of Cherry Fruit and Standard Tomato Cultivars

Kowalczyk

Gajc-Wolska

Marcinkowska

2011

Journal of Fruit and Ornamental Plant Research

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The Influence of Growing Medium and Harvest Time on the Biological Value of Cherry Fruit and Standard Tomato Cultivars The objective of this study was to examine some quality traits of tomato fruits, concerning chemical composition, in relation to the type of growing medium and harvest time. Cherry (‘Dasher’ and ‘Organza’) and standard (‘Admiro’ and ‘DRW 7594’) tomato cultivars were grown in a greenhouse with controlled climate and drip fertilizing system, in three different growing media. Environment friendly media - coconut fiber and wood fiber were compared to rockwool, commonly used as a standard horticultural medium. The type of tomato cultivar as well as harvest time significantly influenced fruit quality. The highest fruit quality was obtained from red cherry ‘Dasher’ F1 cultivar in the July harvest. The content of macronutrients in tomato fruit were significantly depend on growing media. The higher content of phosphorus was obtained in tomato fruits from plants cultivated on coconut fiber and nitrates from rockwool. The content of sugars, TSS and ascorbic acid in tomato fruit mostly depended on the growing medium. The most total sugars had fruits when plant cultivated on coconut fiber. Coconut fiber, wood fiber and rockwool can be used as the alternative media for different soilless growing systems, without a significant change of the taste quality of tomatoes.

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Effect of Soil Water Deficit on Vitamin C, Sugar, Organic Acid, Amino Acid and Carotene Contents of Large-fruited Tomatoes.

Cited by 64 publications

References 4 publications

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Effect of Moderate Salinity Stress on the Sugar Concentration and Fruit Yield in Single-truss, High-density Tomato Production System

Amino acids as indicators of physiological stress in common reed Phragmites australis affected by an extreme flood

The Influence of Growing Medium and Harvest Time on the Biological Value of Cherry Fruit and Standard Tomato Cultivars

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