Effects of Led Supplementary Lighting and NPK Fertilization on Fruit Quality of Melon (Cucumis melo L.) Grown in Plastic House

AbstractMelon (Cucumis melo L.) is a high-value fruit in Thailand, usually grown in plastic houses where light could become a major limiting growth factor. This study used melon cultivar ‘#120’ (orange flesh) grown in a plastic house under natural daylight (NDL, control) and with supplementary lighting using light emitting diodes (LEDs) of a combination of red 630 nm, red 660 nm, blue 450 nm, blue 460 nm, white 14000 K, UV 410 nm and IR 730 nm (LED1) or a combination of red 630 nm, red 660 nm, blue 450 nm and blue 460 nm (LED2) applied for 12 h from 6:00 pm to 6:00 am. These lighting treatments were combined with NPK fertilization using complete fertilizer 15–15–15 (N–P2O5–K2O) at 5 g, 7 g (recommended rate) or 9 g per plant. Results showed that LED2 combined with 9 g 15–15–15 was the most effective in increasing plant height, chlorophyll content (SPAD index), fruit size and mass, and peel and flesh thickness. The fruit also developed the desired lighter color (higher L* and lower a* coordinates) and were the firmest and sweetest (highest soluble solids content and lowest titratable acidity) among all treatments.

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Higher Temperatures Decrease Fruit Size in Strawberry Growing in the Subtropics

Horticulturae ◽

10.3390/horticulturae7020034 ◽

2021 ◽

Vol 7 (2) ◽

pp. 34

Author(s):

Christopher Menzel

Keyword(s):

Fruit Size ◽

Negative Relationship ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Marketable Yield ◽

Significant Relationships ◽

Small Fruit ◽

Solids Content

Five strawberry (Fragaria × ananassa Duch.) cultivars were grown in Queensland, Australia to determine whether higher temperatures affect production. Transplants were planted on 29 April and data collected on growth, marketable yield, fruit weight and the incidence of small fruit less than 12 g until 28 October. Additional data were collected on fruit soluble solids content (SSC) and titratable acidity (TA) from 16 September to 28 October. Minimum temperatures were 2 °C to 4 °C higher than the long-term averages from 1965 to 1990. Changes in marketable yield followed a dose-logistic pattern (p < 0.001, R2s = 0.99). There was a strong negative relationship between fruit weight (marketable) and the average daily mean temperature in the four or seven weeks before harvest from 29 July to 28 October (p < 0.001, R2s = 0.90). There were no significant relationships between SSC and TA, and temperatures in the eight days before harvest from 16 September to 28 October (p > 0.05). The plants continued to produce a marketable crop towards the end of the season, but the fruit were small and more expensive to harvest. Higher temperatures in the future are likely to affect the economics of strawberry production in subtropical locations.

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922 PB 467 TOLERANCE OF THE GALIA cv. OF MELON (Cucumis melo L.). TO IRRADIATION AS A QUARANTINE TREATMENT

HortScience ◽

10.21273/hortsci.29.5.566c ◽

1994 ◽

Vol 29 (5) ◽

pp. 566c-566

Author(s):

Fernando Lalaguna

Keyword(s):

Cucumis Melo ◽

Dehydroascorbic Acid ◽

Titratable Acidity ◽

Sensory Attributes ◽

Hot Water ◽

Soluble Solids ◽

Alternative Treatments ◽

Ethylene Dibromide ◽

Cucumis Melo L

The banning of ethylene dibromide put an end to the exportation of Venezuelan melon to the northamerican market and made it a need testing alternative treatments. Melons were purchased from a grower/exporter and alloted in groups of 24 to the following treatments: control, 0.5, 0.75 and 1 KGy, and dip in water at 53C for 1 min. alone and plus 0.5 KGy, then they were stored at about 23C and 70% RH during 2 to 3 weeks in two experiments in one season. All the treatments resulted in comparable ratings for sensory attributes and figures for soluble solids, titratable acidity and ascorbic/dehydroascorbic acid; the melons dipped in hot water showed the lowest decay. With the possible exception of the 1 KGy melons, the treated melons had attributes and lasted as least like the control ones, which indicates that the Galia cv. of melon grown in Venezuela tolerates irradiation with doses useful in quarantine and technological terms.

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Nutritional values of traditional open-pollinated melon (Cucumis melo L.) and watermelon (Citrullus lanatus [Thumb]) varieties

International Journal of Horticultural Science ◽

10.31421/ijhs/13/2/715 ◽

2007 ◽

Vol 13 (2) ◽

Cited By ~ 1

Author(s):

Cs. Szamosi ◽

H. Némethy-Uzoni ◽

G. Balázs ◽

É. Stefanovits-Bányai

Keyword(s):

Cucumis Melo ◽

Citrullus Lanatus ◽

Titratable Acidity ◽

Quality Parameters ◽

Matter Content ◽

Soluble Solids ◽

Internal Quality ◽

Total Phenol Content ◽

Dry Matter Content ◽

Cucumis Melo L

The aim of our experiments was to investigate the internal quality parameters of some old melon and watermelon landraces or varieties whether they have any desirable characteristics. Measurements were carried out using 8 different types of melon (Cucumis melo L.) and 8 accessions of watermelon (Citrullus lanatus [Thumb]), which were self pollinated under greenhouse conditions. Besides the determination of dry matter content; soluble solids, titratable acidity of the fruit juices, investigation of carbohydrates, total phenol content was measured by spectrophotometer. Total antioxidant capacities were determined spectrophotometrically using the FRAP method. We found some accesions both among melon and watermelon varieties, which could be characterized by outstanding inner content.

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Minitomato cultivation with substrate under different fertigation management strategies

Horticultura Brasileira ◽

10.1590/s0102-053620180115 ◽

2018 ◽

Vol 36 (1) ◽

pp. 88-93

Author(s):

Ricardo S Bezerra ◽

Adão Wagner P Evangelista ◽

José Alves Júnior ◽

Abadia R Nascimento ◽

Derblai Casaroli

Keyword(s):

Irrigation System ◽

Management Strategies ◽

Fruit Size ◽

Titratable Acidity ◽

Fruit Production ◽

Soluble Solids ◽

Tomato Crop ◽

Tomato Plants ◽

Solids Content ◽

High Level

ABSTRACT The application of high level of fertilization and inadequate management of fertigation in tomato crop can promote increase of salinity of the solution, nutritional imbalance and physiological disorders in the plants, consequently reduces the productivity and the quality of the fruits. The aim of this study was to evaluate different fertigation strategies in growth and production of mini tomato plants cultivated with substrate in a greenhouse. The experimental design was in randomized complete blocks with four treatments and twenty replicates. The treatments corresponded to four fertigation strategies, as follows: T1 [(control) fertigation with leaching of 20%]; T2 fertigation throughout the day and irrigation at the end of the day with leaching of 20%; T3 irrigation with leaching of 20%, followed by fertigation in all activations of the irrigation system; T4 fertigation with leaching of 20% and reuse of the leached solution. Stem height and diameter, number of clusters, total and commercial fruit production, fruit size, fruit color, total titratable acidity, soluble solids content and fruit texture were evaluated. No significant differences were detected among the treatments in relation to the growth variables of the mini tomato plants. The strategies of fertigation tested do not influence significantly the growth of tomato plants. The T1 and T4 managements provide higher commercial production and fruits with higher content of soluble solids when compared with other management strategies evaluated. Considering the nutritional factor, we recommend to reuse the nutrient solution used in the tomato cultivation with substrate, correcting daily the electrical conductivity of the solution.

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Fruit quality of McIntosh apples irrigated with well or municipal waste water

Canadian Journal of Plant Science ◽

10.4141/cjps91-176 ◽

1991 ◽

Vol 71 (4) ◽

pp. 1267-1269

Author(s):

M. Meheriuk ◽

G. H. Neilsen

Keyword(s):

Waste Water ◽

Skin Color ◽

Fruit Size ◽

Titratable Acidity ◽

Municipal Waste ◽

Soluble Solids ◽

First Year ◽

Well Water ◽

Soluble Solids Content ◽

Solids Content

McIntosh apples (Malus domestica Borkh.) irrigated with municipal waste water were softer at harvest and had lower fruit Cu than comparable fruit irrigated with well water. Fruit size, percent red skin color, soluble solids content and fruit N, Ca, K/Ca, K + Mg/Ca, K + Mg + Na/Ca, B, Fe, Mn and Zn were not affected by source of water. Fruit P, Mg, K and Na were higher in apples irrigated with waste water in the second but not the first year of the 2-yr study. Titratable acidity was higher with well water the first year and with waste water the second year. Incidence of core flush was higher in the fruit irrigated with waste water. Key words: Apple, skin color, flesh firmness, titratable acidity, soluble solids content, fruit Ca, Mg, K, Cu, Na, N and P, core flush

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Volatile and Nonvolatile Flavor Chemical Evaluation of USDA Orange–Mandarin Hybrids for Comparison to Sweet Orange and Mandarin Fruit

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.141.4.339 ◽

2016 ◽

Vol 141 (4) ◽

pp. 339-350 ◽

Cited By ~ 4

Author(s):

Jinhe Bai ◽

Elizabeth Baldwin ◽

Jack Hearn ◽

Randy Driggers ◽

Ed Stover

Keyword(s):

Sweet Orange ◽

Fruit Size ◽

Titratable Acidity ◽

Soluble Solids ◽

Volatile Components ◽

Volatile Profile ◽

Detection Frequency ◽

And Cluster Analysis ◽

Solids Content ◽

Almost All

Three citrus hybrids, containing 50% to 75% sweet orange (Citrus sinensis) genome in their pedigrees and similar to sweet orange in fruit size, color, and taste, were tested for their potential to be classified as new “sweet orange” cultivars. ‘Hamlin’, ‘Midsweet’, and three other early to midseason sweet oranges, along with ‘Dancy’ tangerine (Citrus reticulata), a typical mandarin, were used for comparison. Fruit were picked on 23 Jan. 2014, 30 Dec. 2014, and 27 Jan. 2015. A total of 114 volatiles were detected and separated into seven groups by detection frequency: three groups with 43 volatile components did not show differences and thus contributed little information for classification of sweet orange vs. mandarin, and the remaining four groups with 71 volatiles contributed to distinctions between orange and mandarin. Among the hybrids, the pattern of volatile detection frequency for hybrid FF-1-74-52 was virtually identical to sweet orange, and cluster analysis agreed with the classification. The number of average peaks were 55 to 62 in sweet oranges, 67 in FF-1-74-52, and 17 to 37 in tangerine and other hybrids. Quantity analysis of individual volatiles and chemical classes indicated that FF-1-74-52 and sweet oranges were rich in total volatile abundance, and almost all chemical classes including mono and sesquiterpenes, aldehydes, alcohols, ketones, and esters. This was especially true for ethyl butanoate, which contributes a fruity top note, and valencene and all sesquiterpene hydrocarbons, which only contribute to citrus flavor indirectly through their contribution to headspace partitioning. Two other hybrids, FF-1-75-55 and FF-1-76-51, each had some similarity to sweet oranges in several chemicals and classes, but not in the overall volatile profile. All three sweet orange–like hybrids met the standards for mandarins and oranges in soluble solids content, titratable acidity (TA), and the ratio. The above volatile and nonvolatile flavor chemical profile comparisons strongly support a proposal to classify FF-1-74-52 as a “sweet orange” commercially, and all three hybrids were previously shown to be more similar to sweet orange in their volatile profile than is ‘Ambersweet’. ‘Ambersweet’ was a hybrid that was legally classified as a “sweet orange” in 1995 based on its volatile profile.

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Pollination Methods and Integrated Fertilizer Influenced the Pollination Rate, Fruit Development, and Quality of Cucumis melo L. under Greenhouse Conditions

Sustainability ◽

10.3390/su132313300 ◽

2021 ◽

Vol 13 (23) ◽

pp. 13300

Author(s):

Nik Zuraila Nik Hassan ◽

Siti Zaharah Sakimin ◽

Noraini Md Jaafar ◽

Illani Zuraihah Ibrahim

Keyword(s):

Organic Acid ◽

Cucumis Melo ◽

Leaf Tissue ◽

Soluble Solids ◽

Postharvest Quality ◽

Yield Quality ◽

Solids Content ◽

Pollination Methods ◽

Cucumis Melo L

This study was conducted to determine the effect of pollination methods (PMs) and integrated fertilizer (IF) application on the pollination rate, yield, and fruit quality of rockmelon (Cucumis melo L. var. Reticulatus cv. Glamour). This factorial experiment was arranged in a split plot design with four replications. Two rates of IF between chemical (CF) and organic (OF) fertilizer were investigated, namely, T1 (100% CF), which served as a control, and T2 (75% CF + 25% OF). The three PMs used in this study were natural (NP), bee (BP), and human (HP) pollination. Data collection included the pollination rate, yield, postharvest quality (soluble solids content, color, firmness, sugar, and organic acid), and macronutrient content in leaf tissue. The results of this study showed that there was an interaction of the pollination rate between PM and IF; however, the number of bees that survived decreased over time. The yield quality showed an interaction between PM and IF for both the fruit diameter and weight, while no interaction between PM and IF for the organic acid and sugar contents was observed. In conclusion, T2 application combined with BP reduced CF utilization, which benefits the development of a sustainable rockmelon production system.

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Historical Trends in Strawberry Fruit Quality Revealed by a Trial of University of Florida Cultivars and Advanced Selections

HortScience ◽

10.21273/hortsci.46.4.553 ◽

2011 ◽

Vol 46 (4) ◽

pp. 553-557 ◽

Cited By ~ 23

Author(s):

Vance M. Whitaker ◽

Tomas Hasing ◽

Craig K. Chandler ◽

Anne Plotto ◽

Elizabeth Baldwin

Keyword(s):

Fruit Quality ◽

Fruit Size ◽

Titratable Acidity ◽

Soluble Solids ◽

Quality Traits ◽

University Of Florida ◽

Fruit Quality Traits ◽

Solids Content ◽

Chemical Traits ◽

Over Time

The University of Florida strawberry (Fragaria ×ananassa Duch. ex Rosier) breeding program has maintained a continuous breeding effort since 1968 to develop cultivars that are highly adapted to winter production in west-central Florida. To gain insight into breeding progress over time, two advanced selections (UF1 and UF2) and 10 released cultivars, from Florida Belle (1975) to Florida Radiance (2008), were compared for various fruit quality traits in a two-location field study during the 2009–2010 season. Fruit size varied dramatically from 30.8 g for ‘Elyana’ to 16.2 g for ‘Dover’ at Balm, FL, and from 28.3 g for UF2 to 16.6 g for ‘Dover’ at Dover, FL. A linear regression of fruit size on year of release revealed an average gain of 2.6 g per year since 1975 for the cultivars and selections tested (R2 = 0.44). A similar analysis revealed a reduction over time in the proportion of cull fruit (R2 = 0.30). Gains were apparent for the redness of the internal flesh, from a colorimeter a* value of 16.1 for ‘Florida Belle’ (1975) to 34.7 for ‘Carmine’ (2002) but were not sustained for later releases and selections. Although there were significant differences among genotypes for all chemical traits affecting flavor, there were no discernable patterns over time. There were wide month-to-month variations in individual sugars and organic acids, except for citric acid, which was stable across months and locations. The ratio of soluble solids content to titratable acidity ranged widely among genotypes, from a high of 15.7 for ‘Florida Belle’ in February at Dover, FL, to a low of 6.4 for ‘Winter Dawn’ in January at Balm, FL. The observed variability and trends in fruit quality traits will help guide future genetic studies and inform decisions about future breeding priorities and selection procedures.

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Behaviour of abscisic acid and polyamines in antisense ACC oxidase melon (Cucumis melo) during ripening

Functional Plant Biology ◽

10.1071/pp01164 ◽

2002 ◽

Vol 29 (7) ◽

pp. 865 ◽

Cited By ~ 21

Author(s):

María Concepción Martínez-Madrid ◽

Francisco Flores ◽

Felix Romojaro

Keyword(s):

Fruit Ripening ◽

Cucumis Melo ◽

Membrane Integrity ◽

Acc Oxidase ◽

Titratable Acidity ◽

Ethylene Biosynthesis ◽

Soluble Solids ◽

Acid Oxidase ◽

Cell Membrane Integrity ◽

Solids Content

The behaviour of transgenic antisense 1-aminocyclopropane-1-carboxylic acid oxidase melon (TAM) was studied during fruit ripening. Work focussed mainly on analysis of the evolution of other plant growth regulators like ABA and polyamines in this type of melon. Physical-chemical and physiological differences from untransformed melon (UTM) (Cucumis melo L. var. cantalupensis Naud. cv. V�drantais) began to appear from the time of the latter's ethylene crisis. Ethylene synthesis was inhibited by 97.7% in TAM at the time when UTM showed maximum ethylene levels. The ripeness index of TAM was lower, despite their higher soluble solids content, due to the higher titratable acidity. Unlike UTM, TAM rind maintained its colour and cell membrane integrity, although there was no difference in the pulp in this respect. Blocking ethylene biosynthesis affected the levels of ABA and the polyamine putrescine, the latter only in the rind. The possible relationship between ethylene, ABA and polyamines, the effect of blocking ethylene biosynthesis on the evolution of these regulators, and their role in fruit ripening are discussed.

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Quality Parameters in Four Melon Hybrids Stored at Different Temperatures

HortScience ◽

10.21273/hortsci.31.4.643d ◽

1996 ◽

Vol 31 (4) ◽

pp. 643d-643

Author(s):

Juan Manzano ◽

Yolanda Pérez ◽

Douglas Delgado

Keyword(s):

Cucumis Melo ◽

Room Temperature ◽

Titratable Acidity ◽

Quality Parameters ◽

Soluble Solids ◽

Total Sugars ◽

Titratable Acid ◽

Acid Ratio ◽

Different Temperatures ◽

Solids Content

Melon fruit (Cucumis melo L.) from Chando, Concorde, Explorer, and Durango hybrids, collected from a Sante Ines farmer from Rio Tocuyo, were stored at 5, 10, and 18°C and room temperature for 7, 14, and 21 days with the objective of getting the response of melon hybrids in relation to quality characteristics. The soluble solids content and dry matter were not significant in the studied hybrids, titratable acidity was higher at 5°C, Chando had the highest values. Explorer had the highest pH values and soluble solids: titratable acid ratio at room temperature. Reducing and total sugars had the lowest values at 18°C and room temperature, Chando had the highest values. Concorde had the highest values for fresh weight loss at room temperature during 21 days of storage.

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