scholarly journals Impact of Selenium and Copper Nanoparticles on Yield, Antioxidant System, and Fruit Quality of Tomato Plants

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 355 ◽  
Author(s):  
Hernández-Hernández ◽  
Quiterio-Gutiérrez ◽  
Cadenas-Pliego ◽  
Ortega-Ortiz ◽  
Hernández-Fuentes ◽  
...  
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Titratable Acidity ◽  
Good Alternative ◽  
Soluble Solids ◽  
Antioxidant Compounds ◽  
Tomato Yield ◽  
The Impact

The effects of nanoparticles (NPs) on plants are contrasting; these depend on the model plant, the synthesis of the nanoparticles (concentration, size, shape), and the forms of application (foliar, substrate, seeds). For this reason, the objective of this study was to report the impact of different concentrations of selenium (Se) and copper (Cu) NPs on yield, antioxidant capacity, and quality of tomato fruit. The different concentrations of Se and Cu NPs were applied to the substrate every 15 days (five applications). The yield was determined until day 102 after the transplant. Non-enzymatic and enzymatic antioxidant compounds were determined in the leaves and fruits as well as the fruit quality at harvest. The results indicate that tomato yield was increased by up to 21% with 10 mg L−1 of Se NPs. In leaves, Se and Cu NPs increased the content of chlorophyll, vitamin C, glutathione, 2,2′-azino-bis(3-ethylbenzthiazolin-6-sulfonic acid (ABTS), superoxide dismutase (SOD), glutathione peroxidase (GPX) and phenylalanine ammonia liasa (PAL). In fruits, they increased vitamin C, glutathione, flavonoids, firmness, total soluble solids, and titratable acidity. The combination of Se and Cu NPs at optimal concentrations could be a good alternative to improve tomato yield and quality, but more studies are needed to elucidate their effects more clearly.

scholarly journals Postharvest quality of tomato as affected by nitrogen and sulfur interaction

2020 ◽  
Vol 69 (2) ◽  
pp. 130-135
Author(s):  
Matias Siueia Júnior ◽  
Maria Ligia de Souza Silva ◽  
Anderson Ricardo Trevizam ◽  
Valdemar Faquin ◽  
Deivisson Ferreira da Silva
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Beta Carotene ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Solanum Lycopersicum L ◽  
Randomized Design

Nitrogen (N) and sulfur (S) are nutrients that, in addition to influencing plant growth and production, interfere with processes related to postharvest fruit quality. In the present study, N x S interaction was evaluated in the postharvest quality of tomato (Solanum lycopersicum L.). The experiment was conducted in a greenhouse using 5 dm3 capacity vessels containing a 0-20 cm layer of a dystropherric Red Latosol. A 5 x 3 factorial design was used, with combinations of five doses of N (0, 100, 200, 300 and 400 mg dm-3) and three doses of S (0, 60 and 120 mg dm-3) distributed in a completely randomized design, with four repetitions. After harvest, the attributes of fruit quality were evaluated: firmness, pH, soluble solids (SS), titratable acidity (AT), soluble solids ratio and titratable acidity (SS / AT), vitamin C, lycopene and beta-carotene. An increase in firmness was observed, as well as the content of soluble solids, titratable acidity and the SS / AT ratio of the fruits as a result of the interaction N x S. However, this interaction favoured the reduction of the contents of vitamin C, lycopene and beta-carotene, and the quality characteristics of tomato fruit in relation to the recommended values. Only the increasing doses of N favoured a higher pH in the tomato fruits.

scholarly journals Abscisic acid on the quality of tomato fruits

2020 ◽  
Vol 1 (1) ◽  
pp. 38
Author(s):  
Carlos Agostinho Balate ◽  
Douglas Correa de Souza ◽  
Luis Felipe Lima e Silva ◽  
Luciane Vilela Resende ◽  
Sergio Tonetto de Freitas ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Exogenous Aba ◽  
Root Treatment

The use of abscisic acid (ABA) in agriculture has increased in the last few years due to the increase in ABA commercial availability at lower costs. The objective of this study was to determine the effect of exogenous ABA on tomato fruit quality parameters such as soluble solids (SS), total and soluble pectins, titratable acidity (TA) and flesh firmness. Tomatoes from the cultivar ‘Santa Clara’ were the study followed a complete randomized block desig, with four treatments in five repetitions. The treatments were plants not treated with ABA (control), foliar sprayed with ABA at 500 mg L-1, 150 mL drench with ABA at 500 mg L-1, or foliar plus drench treated with ABA. After harvesting, the physicochemical characteristics of the fruits were evaluated in the laboratory. All treatments were weekly applied to the plants from anthesis to harvest at fully maturity. Root treatment increased SS by up to 26.12%, increased ratio SS/TA, firmness and decreased soluble pectin. According to the results, it can be concluded that the application of ABA to leaves and roots can improve fruit quality by increasing the SS, ratio SS/TA. The method of application affects the SS content.

scholarly journals Characterization of tomato growth and fruit quality under foliar ammonium sprays

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Mohammad Kazem Souri ◽  
Sara Dehnavard
Keyword(s):  
Plant Growth ◽  
Ammonium Sulfate ◽  
Fruit Quality ◽  
Foliar Application ◽  
Tomato Fruit ◽  
Nitrogen Concentration ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Quality Factors

AbstractThis study was done to evaluate the effects of foliar application of ammonium sulfate on growth and fruit quality of tomato plants under hydroponic culture system. Over four months of tomato plant growth, plants were sprayed once per week with different concentrations of ammonium sulfate (0, 50, 100 and 200 mM), as well as with 50 mM every second day. Foliar application of ammonium sulfate led to reductions in many growth and quality parameters, and higher ammonium concentrations exerted greater reductions. Number of leaves, fresh weight of shoots, percentage of leaf dry weight and fruit yield were negatively associated with the treatment with ammonium sulfate. However, leaf nitrogen concentration, fruit diameter and fruit length increased significantly by the application of ammonium. Fruit quality factors were also affected by ammonium sulfate spray treatments. The maximum pH, titratable acidity and total soluble solids (TSS) were obtained from the lowest (50 mM) weekly application of ammonium sulfate. The results indicate that foliar application of ammonium in moderate concentrations could have beneficial effects on plant growth and quality of tomato fruit.

scholarly journals Potassium fertilization in pineapple fruit quality

2021 ◽  
Vol 43 (5) ◽  
Author(s):  
Jéssica Morais Cunha ◽  
Marta Simone Mendonça Freitas ◽  
Almy Junior Cordeiro de Carvalho ◽  
Luiz Carlos Santos Caetano ◽  
Marlene Evangelista Vieira ◽  
...  
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Titratable Acidity ◽  
Field Conditions ◽  
Soluble Solids ◽  
Mineral Nutrient ◽  
Fruit Length ◽  
Potassium Fertilization ◽  
Pineapple Fruit

Abstract Potassium is a mineral nutrient that affects the growth and quality of pineapple fruits. This study aimed to evaluate the quality of ‘Vitória’ pineapple fruits submitted to application of potassium doses. The experiment was carried out from May 2017 to November 2018, in the municipality of São Francisco do Itabapoana (RJ), Brazil. The design was randomized blocks, with four replicates. Treatments were five K2O doses: 0; 6; 12; 18 and 24 g plant-1, applied as KCl, split into two applications after flower induction. Fruit and crown fresh masses, fruit and crown diameters, fruit and crown lengths, titratable acidity, soluble solids, vitamin C, juice pH and soluble solids/titratable acidity ratio were evaluated. Potassium fertilization promoted greater fruit length, diameter and mass. Titratable acidity, soluble solids and vitamin C values increased linearly as a function of potassium doses. Potassium fertilization improves the quality of ‘Vitória’ pineapple fruits under field conditions.

scholarly journals Effect of a Saline Nutritional Regime on Tomato Fruit Yield and on Enhancement of Fruit Quality

1996 ◽  
Vol 1 ◽  
pp. 17
Author(s):  
S. A. AI-Rawahy ◽  
S.M.E. Satti ◽  
M. V. Lopez
Keyword(s):  
Fruit Quality ◽  
Tomato Fruit ◽  
Titratable Acidity ◽  
Total Solid ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Quality Enhancement ◽  
Tomato Fruits ◽  
Nacl Concentration

The effect of a saline nutritional regime on tomato (Lycopersicon esculentum Mill.) fruit yield and fruit quality enhancement for five cultivars (CLN 425, Pearson, Napoli, Hymar, and Sierra) was studied. The saline nutrient treatment consisted of (i) a control. Hoagland's solution (EC=2.5 mScm -1), (ii) Hoagland's solution + 50 mM NaCl (EC=7.46 mScm-1), (iii) Hoagland's solution + 50 mM NaCl + 4 mM K2SO4 + 2 mM H3PO4 (EC=8.31mScm-1), (iv) same as in (iii)3 but applied when plants were at 50% flowering, then the plants were irrigated with Hoagland’s solution as in the control, and (v) same as in (iii) until the plans were at 5096 flowering, thereafter NaCl concentration was reduced to 25mM (EC=5.87 mscm-1). Plans were seven weeks old at the start of the saline treatments. Each plant was in PVC cylindrical pots (15 cm diameter and 27 cm height) containing washed quartz sand. Fruits were harvested once weekly for ten weeks at incipient red. The control gave a higher fruit  yield than the saline treatments. However, the tomato fruits from thesaline treatments had higher titratable acidity, higher total soluble solids, and higher total solid indicating better quality of the fruits than those from the control. Of the five cultivars studied, Hymar had the highest fruit yield followed by Pearson. Hymar’s quality was also highest, followed by CLN 425. Napoli was the most susceptible to salinity and Sierra had the lowest quality.

scholarly journals Fruit quality of Brazilian genotypes of feijoa at harvest and after storage

2017 ◽  
Vol 52 (9) ◽  
pp. 734-742 ◽  
Author(s):  
Cassandro Vidal Talamini do Amarante ◽  
Alexandra Goede de Souza ◽  
Thalita Dal Toé Benincá ◽  
Cristiano André Steffens
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Cold Storage ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Flesh Color ◽  
Flesh Browning ◽  
Acca Sellowiana ◽  
Texture Attributes

Abstract: The objective of this work was to evaluate the physicochemical attributes and vitamin C contents of fruits of five Brazilian genotypes of feijoa (Acca sellowiana), at harvest and after cold storage. The Alcântara, Mattos, Helena, and Nonante cultivars, as well as accession 2316, were studied. The assessed attributes were: fresh mass loss, titratable acidity, soluble solids contents, soluble solids contents/titratable acidity ratio, pH, skin and flesh color, texture, and vitamin C contents (skin and flesh). After storage, there were reductions of 2.9% in soluble solids contents, of 32.2% in titratable acidity, and of approximately 85% in texture attributes, besides increases of 36.3% in the soluble solids contents/titratable acidity ratio and of 21.7% in the pH of fruits. The vitamin C content in the skin was higher than that in the flesh, and increased in both skin and flesh after storage. 'Alcântara' fruits have the highest contents of vitamin C in the skin and flesh. Fruits of 'Nonante' and 'Mattos' show better preservation of the texture attributes, and fruits of 'Nonante', the lowest levels of flesh browning during storage.

scholarly journals Paclobutrazol in the flowering management affects the quality of Malpighia emarginata fruits

2020 ◽  
Vol 50 ◽  
Author(s):  
Erivan dos Santos Sousa ◽  
Jackson Teixeira Lobo ◽  
Daniel de Almeida Carreiro ◽  
Dayanne do Nascimento Dias ◽  
Luciana Guimarães Sanches ◽  
...  
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Fruit Acidity ◽  
Malpighia Emarginata ◽  
Solids Content ◽  
Fruit Mass ◽  
Longitudinal Diameter

ABSTRACT Floral management using the growth regulator paclobutrazol may be an alternative for promoting the uniformity of flowering and fruiting in West Indian cherry (Malpighia emarginata D.C.) plants. However, the effects of its use on fruit quality are still unknown. This study aimed to evaluate the effect of paclobutrazol doses on the fruit quality of M. emarginata. The experimental design was randomized blocks, in a 2 x 5 factorial arrangement, with three replications and three plants per plot, with the studied factors consisting of two M. emarginata cultivars ('Junko' and 'Flor Branca') and five paclobutrazol doses (0, 0.4, 0.8, 1.2 and 1.6 g a.i. m-1 of canopy diameter). The following variables were evaluated: fruit mass, fruit transverse and longitudinal diameters, pH, soluble solids content, titratable acidity, soluble solids/titratable acidity ratio and vitamin C content. The use of paclobutrazol, to some extent, promoted the increase of fruit mass, longitudinal diameter and soluble solids contents. The 'Junko' cultivar presented a higher vitamin C content than that for 'Flor Branca', and the maximum vitamin C contents were obtained with the paclobutrazol doses of 0.64 and 0.81 g a.i. m-1, respectively for the 'Junko' and 'Flor Branca' cultivars. None of the studied factors promoted differences for pH and fruit acidity.

scholarly journals QUALITY OF PROCESSING TOMATO FRUITS IN COMPETITION WITH Solanum americanum

2015 ◽  
Vol 33 (4) ◽  
pp. 689-697
Author(s):  
J. PORTUGAL ◽  
F.C. REGO ◽  
I. MOREIRA ◽  
R.A. VIDAL
Keyword(s):  
Fruit Quality ◽  
Tomato Fruit ◽  
Soluble Solids ◽  
Tomato Fruits ◽  
Independent Variables ◽  
Weed Interference ◽  
Processing Tomato ◽  
Solanum Americanum ◽  
The Impact

ABSTRACT Five experiments were conducted to evaluate the hypothesis that Solanum americanum density and time of coexistence affect the quality of processing tomato fruit. The tomato crop was established using either the direct drilling or the transplanting technique. The factors evaluated consisted of weed density (from 0 up to 6 plants m-2) and time of weed interference (early bloom stage, full flowering stage, fruit filling, and harvest time). The effects of competition on tomato fruit quality were analysed using a multiple model. Tomato variables evaluated included industrial fruit types (which depended on ripeness and disease infection) and soluble solids level(obrix). Tomato fruit quality is dependent on the factors tested. Under low densities (< 6 plants m-2) of S. americanum there was a small impact on the quality of the tomato fruits. The percentage of grade A (mature fruit with red color and without pathogen infection) tomato fruits is the variable most affect by the independent variables. The impact of these independent variables on the percentage of grade C (green and/or with more than 15% disease infection) tomato yield was of smaller magnitude and in an inverse trend as the observed for grade A. The level of soluble solids was influenced by the weed interference on only two experiments, but the impact was of small magnitude. The impact of the results on current and future crop management practices is discussed.

scholarly journals (307) NFT versus Subirrigation: II. Tomato Fruit Quality Grown in Closed Soilless Systems under Salinity or Water Stress

HortScience ◽  
2005 ◽  
Vol 40 (4) ◽  
pp. 1011D-1011
Author(s):  
Francesco Montesano ◽  
Cristina Ferulli ◽  
Angelo Parente ◽  
Francesco Serio ◽  
Pietro Santamaria
Keyword(s):  
Water Stress ◽  
Vitamin C ◽  
Salinity Stress ◽  
Fruit Quality ◽  
Tomato Fruit ◽  
Total Yield ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Average Weight ◽  
Fresh Matter

Nutrient solutions (NS) containing moderate to high concentrations of salts are frequently supplied to improve the taste of tomato fruits grown in soilless systems. The aim of this study was to determine whether salinity and water stress affect the tomato fruit quality similarly. The research was conducted in Mola di Bari, Italy, during Autumn 2004, and compared the nutrient film technique (NFT) with the trough-bench technique [Subirrigation (SUB)] in terms of tomato (Lycopersicon esculentum Mill. cv. Kabiria) fruit quality. In the NFT, the plants were grown with two electrical conductivity (EC) levels (2–4 and 6–8 dS·m-1) of NS. The highest EC was obtained by increasing all the ions in the NS. In the SUB system, two water tensions (-4 and -8 kPa) of substrate (perlite) were examinated. At harvest, in each cluster (six/plant), fruit dry matter (DM) and total soluble solids (TSS) were determinated. In the fourth and sixth cluster, vitamin C content and titratable acidity were determined. Total yield was not influenced by either soilless system, while the average weight of the fruit was lower in the SUB. The DM and TTS were influenced by soilless system (on average, 6.6 vs 7.3 g/100 g of fresh matter and 5.3 vs. 5.9 °Brix, with NFT and SUB, respectively). Both of the stresses resulted in the increase of DM and TSS, principally in SUB (water stress) in respect to NFT (salinity stress), while vitamin C and titratable acidity were not influenced by soilless system or water/salinity stress (25.2 mg/100 g fresh matter and 0.45 g/100 mL of citric acid juice, respectively). Results of NFT with the highest EC of NS exceeded 9 dS·m-1, without any stress symptoms in the plants, while EC in the SUB system remained unchanged (about 2.5 dS·m-1).

scholarly journals EVALUATION OF YIELD AND FRUIT QUALITY OF SEVERAL ECOTYPES OF CORNELIAN CHERRY (Cornus mas L.) IN POLISH CONDIOTIONS

2019 ◽  
Vol 18 (6) ◽  
pp. 139-148
Author(s):  
Iwona Szot ◽  
Tomasz Lipa ◽  
Bożena Sosnowska
Keyword(s):  
Vitamin C ◽  
Fruit Quality ◽  
Titratable Acidity ◽  
Shape Index ◽  
Fruit Shape ◽  
Fruit Weight ◽  
Soluble Solids ◽  
Cornelian Cherry ◽  
Cornus Mas

Cornelian cherry is a little-known plant that can be grown in Poland both on a commercial and amateur scale. The commercial cornelian cherry plantations should be established using selected cultivars or vegetatively propagated valuable ecotypes, as only this guarantees a uniform yield, maturation and standardization of fruit quality. The experiment was carried out in 2014 and 2015 in the private plantation of cornelian cherry (Cornus mas L.) located in Dąbrowica, near Lublin (22.454 N; 51.270 E). The subject of the research were ecotypes No.: 1, 2, 3, 4, 5, 6, 7, 10, 11, 14, 15 obtained as seedlings in 1998. Cornelian cherry plants obtained from seeds differed very much in the yield and quality of fruit. The fruit characteristics for the examined ecotypes ranged to 1.63–2.21 g for fruit weight, 1.30–1.61 for fruit shape index, 10.13–15.32% for content of stone, 17.85–22.68% for soluble solids content (SSC), 2.32–3.0% for titratable acidity (TA), 6.59–8.36 for SSC/TA, 54.9–75.97 for vitamin C content. Among the ecotypes studied in terms of external fruit features, ecotypes No. 3 and 4 were distinguished due to the largest fruits (mass and diameter) and relatively small share of the stone in the whole mass of the fruit. However, due to the chemical composition, the fruits of ecotype No. 5 were distinguished by the content of extract, extract to acids ratio, sugar, dry matter, anthocyanins and vitamin C content. These fruits enjoyed 55% strong acceptability among adults. The indicated ecotypes can be used in breeding as well as in nursery for obtaining valuable varieties of cornelian cherry for production in Poland.

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