scholarly journals 127 Ethylene Production in Tomato Fruit in Relation to Postharvest Quality Deterioration

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 411B-411
Author(s):  
Hakim Abdul ◽  
Pehu Eija ◽  
Voipio Irma ◽  
Khatoon Mohfeza
Keyword(s):  
Lycopersicon Esculentum ◽  
Production Rate ◽  
Ethylene Production ◽  
Tomato Fruit ◽  
Fruit Size ◽  
Postharvest Quality ◽  
Maturity Stage ◽  
Quality Deterioration ◽  
Maturity Stages ◽  
Small Fruit

Ethylene is produced by tomato fruit (Lycopersicon esculentum) at a rate that is dependent on fruit size, maturity stage, and adherence of calyxes. Production rate of ethylene declined with increased maturity stages. Small fruit produced higher ethylene compared to medium or large sizes. Ethylene production is positively correlated with rate of respiration, but not with visible pitting. Fruit stored with calyx produced less ethylene than those that were stored without calyxes.

scholarly journals Postharvest Attributes of `Virosa' Tomato Fruit Produced in an Enriched Carbon Dioxide Environment

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 490-491 ◽  
Author(s):  
M. Hossein Behboudian ◽  
Colin Tod
Keyword(s):  
Carbon Dioxide ◽  
Lycopersicon Esculentum ◽  
Ethylene Production ◽  
Tomato Fruit ◽  
Soluble Sugars ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Total Soluble Solids ◽  
Postharvest Ripening

The effect of preharvest CO2 enrichment (1000 μl·liter–1) on postharvest quality of tomato fruit (Lycopersicon esculentum Mill. `Virosa') was studied with an emphasis on soluble sugars, ripening, and mineral composition. High-CO2 fruit had higher concentrations of sucrose, glucose, fructose, and total soluble solids than ambient-CO2 fruit. High-CO2 fruit also ripened more slowly and was characterized by lower respiration and ethylene production rates than ambient-CO2 fruit. Concentrations of N, P, and K were lower in the high-CO2 fruit than in the ambient-CO2 fruit, whereas those of S, Ca, and Mg were the same for both treatments. Preharvest CO2 enrichment of `Virosa' tomato enhances fruit desirability in terms of slower postharvest ripening and higher concentrations of soluble sugars and total soluble solids.

scholarly journals Ripening of "Pedro Sato" guava: study on its climacteric or non-climacteric nature

2005 ◽  
Vol 17 (3) ◽  
pp. 299-306 ◽  
Author(s):  
Marisa Azzolini ◽  
Angelo Pedro Jacomino ◽  
Ilana Urbano Bron ◽  
Ricardo Alfredo Kluge ◽  
Marlene Aparecida Schiavinato
Keyword(s):  
Respiratory Rate ◽  
Ethylene Production ◽  
Room Temperature ◽  
Psidium Guajava ◽  
Maturity Stage ◽  
Physiological Basis ◽  
Tropical Fruit ◽  
Maturity Stages ◽  
Climacteric Fruit ◽  
Light Green

Guava (Psidium guajava L.) is a tropical fruit exhibiting rapid post-harvest ripening. However, the physiological basis involved in the ripening process of guava is not totally clear, which makes it difficult to develop technologies to enhance fruit storability. Two experiments were carried out with the objective of determining the ripening behavior of 'Pedro Sato' guavas. In the first experiment, guava fruits at three maturity stages (I - dark green, II - light green and III - yellow-green) were stored at room temperature (23 ± 1°C and 85 ± 5 % RH). The respiratory rate, ethylene production, pulp and skin colours, and firmness were evaluated. In the second experiment, ethylene and 1-methylcyclopropene (1-MCP) were applied to guavas at the light green maturity stage and the ripening behaviour during storage at room temperature was studied. Fruits from all maturity stages showed a gradual increase in the respiratory rate and ethylene production. The intense changes in pulp and skin colours and in firmness preceded the maximum respiratory rate and ethylene production. 1-MCP reduced the rate of ripening, while the application of ethylene did not promote this process. These results do not permit the classification of 'Pedro Sato' guava as a traditional climacteric fruit.

Use of Lycopersicon cheesmanii and L. chmielewskii to increase dry matter content of tomato fruit

1993 ◽  
Vol 73 (1) ◽  
pp. 273-279 ◽  
Author(s):  
V. Poysa
Keyword(s):  
Lycopersicon Esculentum ◽  
Dry Matter ◽  
Tomato Fruit ◽  
Fruit Size ◽  
Fruit Yield ◽  
Soluble Solids ◽  
High Yield ◽  
Dry Matter Content ◽  
Total Solids ◽  
Solids Content

Advanced lines and backcrosses from interspecific hybridization of processing tomato (Lycopersicon esculentum Mill.) with six L. chmielewskii (Rick, Kesicki, Fobes and Holle) and L. cheesmanii (Riley) accessions were evaluated in the field over 2 yr for soluble solids content (SSC), total solids content (TSC), fruit yield and fruit size to determine the effectiveness of combining elevated solids levels with high fruit yield and size following early generation selection. More than a quarter of the lines had significantly higher SSC levels than the recurrent tomato parent, Purdue 812 (P812). Several lines combined high SSC and TSC with high fruit yield and large fruit size to produce more dry matter yield per hectare or per fruit than P812. Two backcrosses were optimal for combining high SSC and high yield. SSC and TSC were negatively correlated with fruit size and, to a lesser degree, with fruit yield. Key words: Lycopersicon esculentum, soluble solids, total solids

scholarly journals POSTHARVEST QUALITY AND PH OF FUSARIUM-INOCULATED TOMATO FRUIT UNDER CONTROLLED ATMOSPHERES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 650c-650
Author(s):  
John C. Beaulieu ◽  
Mikal E. Saltveit
Keyword(s):  
Lycopersicon Esculentum ◽  
Tomato Fruit ◽  
Postharvest Quality ◽  
Temperature Dependent ◽  
Controlled Atmospheres ◽  
Significant Time ◽  
Control Fruit

Tomato (Lycopersicon esculentum Mill., cv. BHN 91) fruit were hand harvested at the pink sage of maturity and stored at 12.5, 20, and 30C in air, 3% O2 + 5% CO2, or 0.5% O2 + 20% CO2 for up to six days. Half of the fruit were inoculated with Fusarium. Control fruit retained the best appearance in 3% O2 + 5% CO2 at both 20 and 30C. Inoculated fruit at 12.5, 20 and 30C in air or 3% O2 + 5% CO2 were acceptable for 12, 3 and 2 days, respectively, but they deteriorated more rapidly compared to fruit held in 0.5% O2 + 20% CO2 as temperature and time increased. Off-odors were present in all 0.5% O2 + 5% CO2 treatments by days 12, 9 and 5 at 12.5, 20 and 30C, respectively. A significant time- and temperature-dependent increase in pH of locular and pericarp tissue, and of supernatant pH occurred in inoculated regions of fruit held in air by days 12, 6 and 3 at 12.5, 20 and 30C, respectively. In contrast, reduced acidity occurred at 9 and 5 days in 3% O2 + 5% CO2 at 20 and 30C, respectively. Generally, increased pH followed a trend with air > 3% O2 + 5% CO2 > 0.5% O2 + 20% CO2.

scholarly journals Influence of partial root drying on morpho-anatomical and physiological characteristics of tomato fruits: Lycopersicon esculentum l

2004 ◽  
Vol 49 (1) ◽  
pp. 13-23
Author(s):  
M. Srdic
Keyword(s):  
Lycopersicon Esculentum ◽  
Root System ◽  
Tomato Fruit ◽  
Sugar Content ◽  
Fruit Size ◽  
Yield Reduction ◽  
Anatomical Characteristics ◽  
Phases Of Development ◽  
Partial Root Drying ◽  
Whole Plants

Partial root drying (PRD) is a new irrigation and plant growing technique which improves water use efficiency without significant yield reduction. The aim of the presented thesis was to investigate the effect of this technique on the growth of vegetative and generative tomato organs, and especially fruits, its influence on the activity of enzyme cell wall peroxidase morpho-anatomical characteristics of flower and fruit pedicels, influence on fruits yield and quality and ions distribution in tomato organs. Tomato line L-4 (Lycopersicon esculentum L) was grown in commercial compost with the root system divided equally between two plastic pots. During the vegetative and generative phases of development, one half of the root system of PRD was maintained in a dry state, while the other half was optimally watered. After 10 days an inversion was made in such a way that previously wet side was exposed to drought and dried side was watered. Obtained results showed that as a consequence of PRD treatment the growth of whole plants was reduced with fruit size and yield of PRD plants being similar to control, as well as morpho-anatomical characteristics of pedicels, ions and lycopen contents although sugar content was higher in PRD than in control plants. These results suggest that with PRD technique we can halve the demand for irrigation water and increase the nutritional value of the tomato fruit.

scholarly journals Postharvest quality of ‘Baigent’ apples as a function of single and multiple preharvest spray aminoetoxivinylglycine and ethephon applications

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Cristina Soethe ◽  
Cristiano André Steffens ◽  
Fernando José Hawerroth ◽  
Cassandro Vidal Talamini do Amarante ◽  
Angélica Schmitz Heinzen ◽  
...  
Keyword(s):  
Production Rate ◽  
Fruit Quality ◽  
Cold Storage ◽  
Ethylene Production ◽  
Rupture Strength ◽  
Postharvest Quality ◽  
Apple Trees ◽  
Commercial Harvest ◽  
Ethylene Production Rate

Abstract The aim of this work was to evaluate the effect of single and multiple pre-harvest spray aminoethoxyvinylglycine (AVG) applications with or without ethephon, in ‘Baigent’ apple trees cultivated under anti-hail screen and harvesting date on fruit quality after storage. The experiment was conducted in a commercial orchard in the municipality of Vacaria/RS, in the 2014/15 and 2015/16 harvests. Treatments consisted of: control (plants sprayed with water); AVG (125 mg L-1, 30 days before the predicted harvest date; BPHD); ethephon (120 mg L-1, seven BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD); AVG (62.5 mg L-1 + 62.5 mg L-1, 30 and 20 BPHD) + ethephon (120 mg L-1, seven BPHD). Fruits of all treatments were harvested at commercial harvest (harvest 1) and after 14 days (harvest 2). Fruits were evaluated after four months of cold storage (0.5 °C ± 0.2 °C and RH 92 ± 5%). The use of AVG, regardless of single or multiple applications, reduced ethylene production rate, skin yellowing, farinaceous pulp and senescent degeneration incidence and maintained higher pulp firmness values and pulp penetration and skin rupture strength. Ethephon provided fruits with higher farinaceous pulp incidence. Fruit treated with AVG, regardless of single or multiple application and combination with ethephon, presents better quality after cold storage.

scholarly journals Postharvest Quality of Refrigerated Tomato Fruit (S olanum lycopersicum , cv. Zinac) at Two Maturity Stages Following Heat Treatment

2014 ◽  
Vol 39 (6) ◽  
pp. 697-709 ◽  
Author(s):  
Joaquina Pinheiro ◽  
Carla Alegria ◽  
Marta Abreu ◽  
Manuela Sol ◽  
Elsa M. Gonçalves ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Tomato Fruit ◽  
Postharvest Quality ◽  
Maturity Stages

scholarly journals Ēxopolygalacturonase Elicits Ethylene Production in Tomato

HortScience ◽  
1990 ◽  
Vol 25 (7) ◽  
pp. 779-780 ◽  
Author(s):  
Elizabeth A. Baldwin ◽  
Russell Pressey
Keyword(s):  
Lycopersicon Esculentum ◽  
Ethylene Production ◽  
Tomato Fruit ◽  
Control Fruit ◽  
Ethylene Response ◽  
Oak Pollen ◽  
Cherry Tomatoes

Exopolygalacturonase (exo-PG) (EC 3.2.1.67) was investigated for ability to induce ethylene production in green cherry tomatoes (Lycopersicon esculentum Mill.). The fruit were vacuum-infiltrated with various levels of exo-PG from green tomato fruit, squash flower, or oak pollen and compared to boiled enzyme or salt controls for ethylene production. In all cases, fruit treated with active enzymes produced significantly higher levels of ethylene than did control fruit. The ethylene response was evident 2 hours after treatment and was transient in nature, returning to basal levels by 22 hours. The amount of ethylene produced did not appear to be influenced by the source of exo-PG.

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