scholarly journals Fruit color stability, anthocyanin content, and shelf life were not correlated with ethylene production rate in five primocane raspberry genotypes

2019 ◽  
Vol 247 ◽  
pp. 9-16 ◽  
Author(s):  
Pauliina Palonen ◽  
Courtney Weber
Keyword(s):  
Shelf Life ◽  
Production Rate ◽  
Ethylene Production ◽  
Color Stability ◽  
Fruit Color ◽  
Anthocyanin Content ◽  
Ethylene Production Rate

scholarly journals Ethylene Production Rate and Postharvest Shelf-life Diversity in Melon (Cucumis melo L.) Germplasm

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 827A-827 ◽  
Author(s):  
David W. Wolff ◽  
James R. Dunlap
Keyword(s):  
Shelf Life ◽  
Production Rate ◽  
Ethylene Production ◽  
Cucumis Melo ◽  
Acc Oxidase ◽  
Acc Synthase ◽  
Postharvest Decay ◽  
Production Measurement ◽  
Ethylene Production Rate ◽  
Cucumis Melo L

Cucumis melo varieties show a great diversity of ripening and abscission phenotype, ethylene production, and postharvest keeping quality. As a preliminary step in the development of melons with improved shelf-life and modified ripening, we surveyed 100 genotypes of melons with diverse ripening characteristics for ethylene production rate and shelf-life. Genotypes representing seven melon types (Western shipper cantaloupes, Eastern cantaloupes, Long shelf life cantaloupes [LSL], Charenteis, Galias, Honeydews, Casabas) were planted in the field in a randomized complete block with three replications. C. melo var. reticulatus and C. melo var. inodorus were harvested 40 and 50 days post-anthesis, respectively, and brought in the lab for ethylene production measurement. Fruit at horticultural maturity were also harvested and stored at room temperature. After 7 days, a postharvest decay rating (1 = complete rot and collapse–5 = no softening or decay) was taken to determine relative shelf-life of the genotypes. Average ethylene production rate ranged from 44.44 to 0.64 nl·h–1·g–1 for Eastern cantaloupes and Casaba melons, respectively. A negative linear relationship was observed between ethylene production rate and postharvest decay rating. LSL cantaloupes had the lowest ethylene production rate of the netted, orange flesh types. The relationship between ethylene production rate and polymorphism for ACC oxidase (pMEL1) and ACC synthase (pMEACS1) cDNA probes is being investigated.

scholarly journals Effect of Heated Water in Prevention of Chilling Injury in Tomatoes

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 825C-825
Author(s):  
Abdul Hakim ◽  
Irma Voipio
Keyword(s):  
Water Temperature ◽  
Production Rate ◽  
Ethylene Production ◽  
Electrolyte Leakage ◽  
Chilling Injury ◽  
Fruit Color ◽  
Hot Water ◽  
Color Changes ◽  
Heated Water ◽  
Ethylene Production Rate

Mature green tomatoes (Lycopersicon esculentum Mill. cv. Vibelco) were immersed in 38, 42, 46, 50, and 54C for 90 min prior to storage at 2C for 2, 4, or 6 weeks in paper bags. After storage, they were kept at 20C. Fruits immersed in heated water showed lower ethylene production, rate of respiration, electrolyte leakage, and visible chilling injury than nontreated fruits. During storage and after removal at 20C, hot-water-treated fruits ripened faster than nontreated fruits The increase in water temperature from 38 to 46C resulted in declined ethylene production, rate of respiration, electrolyte leakage, and visible chilling injury, but, with further increase in water temperature (46 to 54C), they increased. Of all the pretreatments, the treatment at 42 or 46C were most effective in enhancing fruit color changes. Inhibition in ethylene production, rate of respiration, electrolyte leakage, and visible chilling injury was highest on fruits immersed at 42 and 46C.

Regulation of Anthocyanin Synthesis in Apple Skin. II. Involvement of Ethylene

1977 ◽  
Vol 4 (1) ◽  
pp. 123 ◽  
Author(s):  
DJ Chalmers ◽  
JD Faragher
Keyword(s):  
Production Rate ◽  
Ultraviolet Irradiation ◽  
Ethylene Production ◽  
Control Level ◽  
Apple Fruit ◽  
Anthocyanin Synthesis ◽  
Anthocyanin Formation ◽  
Initial Application ◽  
Ethylene Production Rate

Ethylene production by immature apple fruit was stimulated by cycloheximide application, u.v. irradiation and wounding. After fruit were treated with 1 and 10 �g ml-1 cycloheximide, the rate of ethylene production increased to 2 and 10 times the control level, respectively. In skin discs cut from whole fruit (wounded tissue), the rate of ethylene production was stimulated to at least 40 times that in whole fruit. This wound-stimulated ethylene production was partially inhibited by an initial application of cycloheximide. Ultraviolet irradiation of whole fruit stimulated the rate of ethylene production to more than 25 times the control rate after 15 min irradiation. In skin discs, u.v. irradiation caused only a 50-100% increase in ethylene production rate. The effects of certain treatments on ethylene were quantitatively comparable with the effects of the same treatments on anthocyanin formation in whole fruit. Ethylene at 30 �l 1-1 stimulated anthocyanin in skin of immature apples by 16%. Possible mechanisms by which ethylene may stimulate anthocyanin synthesis are discussed.

Ethylene production under high temperature stress causes premature leaf senescence in soybean

2010 ◽  
Vol 37 (11) ◽  
pp. 1071 ◽  
Author(s):  
Maduraimuthu Djanaguiraman ◽  
P. V. Vara Prasad
Keyword(s):  
High Temperature ◽  
Production Rate ◽  
Seed Size ◽  
Leaf Senescence ◽  
Photosynthetic Rate ◽  
Ethylene Production ◽  
Seed Set ◽  
Membrane Damage ◽  
Premature Leaf Senescence ◽  
Ethylene Production Rate

Leaf senescence in soybean (Glycine max L. Merr.) occurs during the later stages of reproductive development and can be triggered or enhanced by high temperature (HT) stress. Ethylene production can trigger premature leaf senescence, but it is unclear whether HT stress produces ethylene and the subsequent influence on physiology and yield of soybean is also uncertain. We hypothesised that ethylene produced under HT stress is involved in premature leaf senescence and that use of an ethylene perception inhibitor would influence physiology and yield. Objectives of this study were to (1) quantify HT-stress-induced ethylene production; (2) quantify effects of HT stress and application of an ethylene perception inhibitor (1-methylcyclopropene; 1-MCP) on source strength traits such as photosynthetic rate, oxidant production, membrane damage and sugar accumulation; and (3) evaluate efficacy of 1-MCP on minimising HT-stress-induced effects on physiological and yield traits. Soybean plants were exposed to HT (38/28°C) or optimum temperature (OT, 28/18°C) for 14 days at the beginning of pod set. Plants at each temperature were treated with 1 μg L–1 1-MCP or left untreated (control). HT stress enhanced ethylene production rates in leaves and pods by 3.2- and 2.1-fold over OT. HT stress decreased photochemical efficiency (5.8%), photosynthetic rate (12.7%), sucrose content (21.5%), superoxide dismutase (13.3%), catalase (44.6%) and peroxidase (42.9%) enzymes activity and increased superoxide radical (63%) and hydrogen peroxide (70.4%) content and membrane damage (54.7%) compared with OT. Application of 1-MCP decreased ethylene production rate and premature leaf senescence traits by enhancing the antioxidant defence system. HT stress decreased seed set percentage (18.6%), seed size (64.5%) and seed yield plant–1 (71.4%) compared with OT, however, foliar spray of 1-MCP increased the seed set percent and seed size, which resulted in a higher yield than the unsprayed control. The present study showed HT stress increased ethylene production rate, which triggered premature leaf senescence, whereas 1-MCP application reduced or postponed premature leaf senescence traits by inhibiting ethylene production.

scholarly journals Temperature and Propylene Effects on Ripening of Green and Black 'Conservolea' Olives

HortScience ◽  
2002 ◽  
Vol 37 (7) ◽  
pp. 1079-1081 ◽  
Author(s):  
George D. Nanos ◽  
Elizabeth Agtsidou ◽  
Evangelos M. Sfakiotakis
Keyword(s):  
Production Rate ◽  
Respiration Rate ◽  
Ethylene Production ◽  
Storage Temperature ◽  
Substantial Effect ◽  
Minor Effect ◽  
Green Color ◽  
Black Olive ◽  
Green Olive ◽  
Ethylene Production Rate

Ripening of detached mature-green and black-ripe olives (Olea europaea L., cv. Conservolea) was studied during storage at 0, 5, 10, or 20 °C in air or air plus 100-200 μL·L-1 propylene. Green olive skin h° remained unchanged after 24 days at 0 or 5 °C in air or air + propylene, while olives partially lost their green color at 10 °C and developed purple color at 20 °C together with a substantial flesh softening. Propylene partially delayed flesh softening only at 10 °C. Respiration of green and black olives increased with storage temperature. Black olives had higher respiration rate than green olives. Propylene had no substantial effect on green or black olive respiration rate, except for an increase in respiration and ripening rates of green olives kept at 20 °C. Ethylene production rate of air- or air + propylene-treated green olives was almost undetectable. Black olives had higher ethylene production rate than green olives and this rate significantly increased with storage temperature. Addition of propylene had only minor effect on ethylene production of black olives. No climacteric respiratory rise or autocatalytic ethylene production was observed in green and black olives.

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.

Measurement and prediction of harvest maturity of Jonathan apples for storage

1984 ◽  
Vol 24 (125) ◽  
pp. 290 ◽  
Author(s):  
JD Faragher ◽  
RL Brohier ◽  
CR Little ◽  
ID Peggie
Keyword(s):  
Production Rate ◽  
Ethylene Production ◽  
Controlled Atmosphere ◽  
Ground Colour ◽  
Crop Load ◽  
Flesh Browning ◽  
Harvest Maturity ◽  
Rate Loss ◽  
Ethylene Production Rate

Methods have been developed to measure the latest maturity at which Jonathan apples can be harvested for long term cold storage without unacceptable losses from disorders and softening. Maturity at harvest was measured by ethylene production rate, loss of green ground colour of the skin, and flesh firmness. The levels of these maturity measures were related by regression analysis to the levels of breakdown, brownheart (flesh browning) and softening which developed after storage. From these relationships, values of ethylene production, ground colour, and firmness, which measured the latest safe harvest maturity for storage without unacceptable losses, were calculated. Such values were determined for storage for seven months in controlled atmosphere and 3.5 months in air, for several orchards and for apples of different sizes. In addition, we determined methods to predict when the latest safe harvest maturity would occur. The time from the date of first appearance of the stem cavity (T-stage) was the most accurate index from which to predict the time of last safe harvest maturity. These times were 98- 119 d, depending on crop load, storage treatment, season and orchard. The date on which ripening started, as measured by increase in ethylene production rate, or loss of green ground colour of skin, could also be used to predict harvest. However, these latter changes often occurred too close to harvest date to be practically useful for prediction.

scholarly journals Location and Temperature Effects on Soft Scald in `Honeycrisp' Apples

HortScience ◽  
2003 ◽  
Vol 38 (6) ◽  
pp. 1153-1155 ◽  
Author(s):  
Cindy B.S. Tong ◽  
David S. Bedford ◽  
James J. Luby ◽  
Faye M. Propsom ◽  
Randolph M. Beaudry ◽  
...  
Keyword(s):  
Production Rate ◽  
Ethylene Production ◽  
Temperature Effects ◽  
Storage Temperature ◽  
The Other ◽  
Elemental Content ◽  
Honeycrisp Apples ◽  
Soft Scald ◽  
Ethylene Production Rate ◽  
And Storage

The effects of growing and storage locations and storage temperature on soft scald incidence of `Honeycrisp' apples were examined. In 1999 and 2000, fruits were produced at five different locations, harvested at two different times, and stored at two or five different storage locations. In 1999, fruits were stored at 0 or 2 °C. Soft scald was only observed in fruits from one growing location and primarily at 0 °C. More soft scald was observed from the second harvest than from the first. Scalded fruits were preclimacteric as determined by ethylene production rate, whereas fruits from the other locations were postclimacteric. In 2000, fruits from four of the growing locations developed soft scald, and soft scald incidence was not related to ethylene production rate. Scalded fruits had higher concentrations of phosphorus, boron, and magnesium, and lower concentrations of manganese than unaffected fruit. Development of soft scald was not related to fruit ethylene production rates, was dependent on growing location, increased with later harvest, and may be related to fruit elemental content.

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