Pepino Dulce (Solanum muricatum Ait.) Quality Characteristics Respond to Nitrogen Nutrition and Salinity

The effect of fertigation with N-NO3 at 3, 6, or 12 mmol·liter-1, and 0, 3, or 6 dS·m-1 chloride ions on fruit quality of three pepino dulce selections was studied. Genotypes varied considerably in their response to mineral treatments in most quality characteristics. Variation in fruit size was greatly reduced when clusters were thinned to three fruit. Increasing chloride concentration in the nutrient soltuion reduced fruit size significantly and ascorbic acid concentration relative to the control, but fruit shape was not affected. Increases in NaCl salt, but not N concentration, resulted in significantly higher soluble solids concentration (SSC) and firmness in all three genotypes. Electrical conductivity, acidity, and pH were significantly affected by the two mineral treatments in the first trial, but remained unchanged in the second season. Fruit firmness, SSC, and acidity declined by 12% to 30%, whereas ascorbic acid content increased during 14 days storage at room temperature. These changes depended on genotype and environment during fruit growth and development. Organoleptic ratings were highest in salt-treated plants. Fruit quality of pepino dulce may be manipulated by crop management, thus improving its acceptability in Western markets.

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Fruit quality of west indian cherry irrigated with saline waters under combinations of nitrogen/potassium fertilization

Bioscience Journal ◽

10.14393/bj-v36n4a2020-48164 ◽

2020 ◽

Vol 36 (4) ◽

Author(s):

Evandro Manoel Da Silva ◽

Hans Raj Gheyi ◽

Reginaldo Gomes Nobre ◽

Joicy Lima Barbosa ◽

Bárbara Genilze Figueiredo Lima Santos ◽

...

Keyword(s):

Fruit Quality ◽

Irrigation Water ◽

Block Design ◽

Fruit Size ◽

West Indian ◽

Titratable Acidity ◽

Fruit Shape ◽

Soluble Solids ◽

Potassium Fertilization

West Indian cherry stands out among the fruits cultivated for the pharmacological and alimentary importance, but its quality can be affected by irrigation water salinity and fertilization management. In this context, this research aimed to study the effect of irrigation water of different salinities and combinations of nitrogen and potassium fertilization on the physical and physico-chemical quality of bioactive compounds in West Indian cherry fruits. The experiment was carried out in the field, using lysimeters of 60 L, in the Experimental Area of the Centro de Ciências e Tecnologia Agroalimentar (CCTA) of Universidade Federal de Campina Grande (UFCG), Pombal, PB, in a randomized block design, with treatments arranged in a 5 x 4 factorial scheme, referring to five irrigation water salinities (ECw): 0.3, 1.3, 2.3, 3.3 and 4.3 dS m-1 and four combinations (C) of doses of nitrogen (N) and potassium (K2O): C1 = 70% N + 50% K2O; C2 = 100% N + 75% K2O; C3 = 130% N + 100% K2O and C4 = 160% N + 125% K2O, of the recommended dose for West Indian cherry, with three replicates and one plant per plot consisting of a lysimeter. The cv. Flor Branca grafted on cv. Junco was used in the study. The increase in salinity of irrigation water reduced the size, weight and vitamin C content of the fruits, but, the combinations of N and K fertilization did not affect fruit shape and the content of anthocyanin, carotenoids, pH, titratable acidity, total soluble solids and fruit flavor. Fertilization combinations consisting of C1 and C2 treatments promoted the largest fruit size under irrigation with ECw of up to 1.3 dS m-1 and greater mass accumulation. Fertilization doses above C2 combinations negatively affected fruit quality.

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Bamboo Biochar Pyrolyzed at Low Temperature Improves Tomato Plant Growth and Fruit Quality

Agriculture ◽

10.3390/agriculture8100153 ◽

2018 ◽

Vol 8 (10) ◽

pp. 153 ◽

Cited By ~ 9

Author(s):

Ratna Suthar ◽

Cun Wang ◽

M. Nunes ◽

Jianjun Chen ◽

Steven Sargent ◽

...

Keyword(s):

Ascorbic Acid ◽

Plant Growth ◽

Fruit Quality ◽

Growth Index ◽

Application Rate ◽

Soluble Solids ◽

Solanum Lycopersicum L ◽

Different Temperatures ◽

Solids Content

As a soil amendment, biochar can significantly improve soil quality and crop growth. Few studies, however, have explored biochar effects on crop quality. This study investigated the amendment effects of bamboo biochar pyrolyzed at different temperatures on plant growth and fruit quality of tomato (Solanum lycopersicum L.). Tomato ‘Micro-Tom’ plants were grown in a sand medium amended with 0, 1, and 3% of biochars produced at 300 °C, 450 °C, and 600 °C, respectively. Plant growth was monitored, and fruit harvested at the red stage was analyzed for color, texture, soluble solids content, sugars, ascorbic acid, and acidity. Results showed that biochars produced at 300 °C and amended at 3% or pyrolyzed at 450 °C and amended at 1% increased plant growth index. Contents of glucose, fructose, soluble solids, ascorbic acid, and sugar-to-acid ratios of fruits produced from the two treatments were significantly higher than the other treatments. The improved plant growth and fruit quality were related to the higher concentrations of NO3, P, Ca, and Mg in the growing media. Our results suggest that optimizing biochar use can be achieved by targeting biochar production conditions and application rate, which resulted in desirable amendment and fruit quality effects.

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Effects of Interspecific Grafting Between Capsicum Species on Scion Fruit Quality Characteristics

HortScience ◽

10.21273/hortsci15948-21 ◽

2021 ◽

pp. 1-7

Author(s):

Andrey Vega-Alfaro ◽

Paul C. Bethke ◽

James Nienhuis

Keyword(s):

Fruit Quality ◽

Agricultural Research ◽

Sweet Pepper ◽

Fruit Shape ◽

Quality Characteristics ◽

Fruit Weight ◽

Soluble Solids ◽

Width Ratio ◽

Soilborne Pathogens ◽

Soil Pathogens

Production of Capsicum annuum peppers is often limited, especially in tropical environments, by susceptibility to soil pathogens including Ralstonia solanacearum. Grafting desirable cultivars onto selected rootstocks can increase adaptation to abiotic stress and is an alternative to pesticides for managing soilborne pathogens. Cultivars of two other pepper species, Capsicum baccatum and Capsicum chinense, are tolerant or resistant to an array of soilborne pathogens and have potential as rootstocks; however, knowledge of how interspecific grafting may affect scion fruit quality is lacking. Flowering time, yield, and fruit quality characteristics were evaluated in 2017 and 2020 for C. annuum cultivars Dulcitico, Nathalie (2017), Gypsy (2020), and California Wonder used as scions grafted onto Aji Rico (C. baccatum) and Primero Red (C. chinense) rootstocks, including self-grafted and nongrafted scion checks. In 2020, the rootstocks per se were evaluated. The two rootstocks (‘Aji Rico’ and ‘Primero Red’), three scions, and self- and nongrafted scions were evaluated using a factorial, replicated, completely randomized design in fields at the West Madison and Eagle Heights Agricultural Research Stations located in Madison, WI, in 2017 and 2020, respectively. Differences among the main effects for scion fruit quality characteristics were consistent with cultivar descriptions. No scion × rootstock interactions were observed. Rootstocks did not result in changes in total fruit number, yield, fruit shape (length-to-width ratio), or soluble solids of scion fruit compared with self- and nongrafted checks. The rootstock ‘Primero Red’ increased fruit weight and decreased time to flowering regardless of scion compared with self- and nongrafted checks. All scions were sweet (nonpungent) cultivars and both rootstocks were pungent cultivars. No capsaicinoids were detected in the fruit of sweet pepper scions grafted onto pungent pepper rootstocks. The results indicate that interspecific grafts involving ‘Aji Rico’ and ‘Primero Red’ will not have deleterious effects on fruit quality characteristics of sweet pepper scions.

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QUALIDADE E PRODUTIVIDADE DE FRUTOS DE FIGO CULTIVADO EM TRÊS DENSIDADES DE PLANTIO

Colloquium Agrariae ◽

10.5747/ca.2018.v14.n4.a260 ◽

2018 ◽

Vol 14 (4) ◽

pp. 161-166

Author(s):

Scheila Lucia Ecker ◽

Clevison Luiz Giacobbo ◽

Leandro Galon ◽

Adriana Lugaresi ◽

Gian Carlos Girardi

Keyword(s):

Fruit Quality ◽

Dry Matter ◽

Fruit Size ◽

Dry Mass ◽

Fruit Weight ◽

Soluble Solids ◽

Planting Density ◽

Significant Difference ◽

Fig Tree

The objective of this work was to verify the influence of planting density on productivity and fruit quality of the fig tree. The design was used in three blocks, the plants of the cultivar Roxo de Valinhos were submitted to three planting spacings: 5 x 0.5 m; 5 x 1.0 m; and 5 x 1.5 m. The evaluated characteristics were: length of branches; average weekly growth of branches; fruit size; average fruit weight;soluble solids (°Brix); yield of mature fruits; productivity of green fruits; accumulated productivity; and dry mass of fruits.The length of the branches was not influenced by planting spacing, the plants conducted at lower densities presented higher productivity, both of green fruits and accumulated productivity.Plants submitted to lower planting density produced fruits with higher dry matter, but these were smaller in size, but without significant difference for those submitted to lower density. It wasconcluded that productivity is directly affected by fig planting density, but not all the qualitative aspects of the fruits were affected.

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722 PB 438 FRUIT QUALITY OF STRAWBERRY GUAVA

HortScience ◽

10.21273/hortsci.29.5.536e ◽

1994 ◽

Vol 29 (5) ◽

pp. 536e-536

Author(s):

Hiroo Mukai ◽

Toshihiko Takagi ◽

Yasuhiro Nakamura ◽

Tetsuo Suzuki

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Titratable Acidity ◽

Fruit Shape ◽

Fruit Weight ◽

Psidium Cattleianum ◽

Guava Fruit ◽

Hard Seeds ◽

Dehydro Ascorbic Acid

Fruit quality of strawberry guava, yellow strawberry guava (Psidium cattleianum Sabine) and red strawberry guava (Psidium cattleianum Sabine var. luidium) was investigated. Fruit weight of yellow strawberry guava ranged from 7.9 to 39.2 g, and that of red strawberry guava ranged from 3.6 to 15.9 g. Yellow strawberry guava was round, and red strawberry guava was ovoid, in fruit shape. strawberry guava fruit had many hard seeds. Yellow and red strawberry guava contained 16 to 137 and 5 to 33 seeds per fruit. Seed of red strawberry guava was bigger than that of yellow strawberry guava. Sucrose, glucose, and fructose were contained in strawberry guava fruit. Sucrose, glucose, and fructose contents of yellow strawberry guava fruit were 6.69%, 3.61%, and 6.27%, respectively. Those of red strawberry guava fruit were 9.52%, 2.09%, and 3.39%, respectively. Strawberry guava fruit contained about 1% of titratable acidity. Total ascorbic and dehydro-ascorbic acid contents of yellow strawberry guava fruit were 57.9 mg/100ml and 41.6 mg/100ml, respectively. Those of red strawberry guava were 81.4 mg/100ml and 74.4 mg/100ml, respectively. Fruit quality of strawberry guava was suitable to eat freshly.

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Influence Of Soil Type On Yield And Quality Of Different Apple Cultivars

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Horticulture ◽

10.15835/buasvmcn-hort:12638 ◽

2017 ◽

Vol 74 (1) ◽

pp. 21

Author(s):

Alina Viorica ILIE ◽

Cristina PETRISOR ◽

Dorel HOZA ◽

Viorel OLTENESCU

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Soil Type ◽

Dry Matter ◽

Soluble Solids ◽

Soluble Solids Content ◽

Yield And Quality ◽

Apple Cultivars ◽

Solids Content

The objective of this study was to determine influence of different soil type on apple yield and quality. To investigate the variation in fruit quality, apples were harvested at commercial maturity on two different soil type. The investigations was conducted in experimental apple orchards located in Focsani region on two different soil type: luvic brown typical and luvic brown pseudogleizate. Fruits of Jonathan and Golden Delicios cultivars were tested for color, soluble solids content, total acidity, ascorbic acid, anthocyanins content and chlorophyls content with specific analytrical methods. At harvest yield, dry matter, soluble solids content, ascorbic acid and acidity were affected by soil type. In this study, no significant soil effect was found on color, anthocyanins and chlorophyll fruit content. The results obtained in this study suggest that luvic brown pseudogleizate soil leading to increased yields and enhanced fruit quality.

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VARIATION IN FRUIT QUALITY CHARACTERISTICS OF PRICKLY PEARS (OPUNTIA SPECIES)

HortScience ◽

10.21273/hortsci.25.9.1173g ◽

1990 ◽

Vol 25 (9) ◽

pp. 1173g-1174

Author(s):

Joseph O. Kuti

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Germplasm Collection ◽

Titratable Acidity ◽

Quality Characteristics ◽

South Texas ◽

Soluble Solids ◽

Opuntia Species ◽

Standard Procedures ◽

Prickly Pears

This paper presents the results from a two-year study on fruit quality characteristics of prickly pear accessions belonging to five Opuntia species (O. ficus-indica, O. hyptiacantha, O. inermis, O. linderheimeri and O. megacantha) from a germplasm collection at Texas A&I University. Fruit soluble solids, pH, titratable acidity and ascorbic acid contents were determined using standard procedures. Significant differences in fruit soluble solids and ascorbic acid contents were observed. Accessions belonging to O. ficus-indica consistently had the highest soluble solids (> 12%) and ascorbic contents (>24mg/100g) while accessions belonging to O. lindheimeri consistently had the lowest soluble solids (<8%) and ascorbic acid contents (< 10mg/100g). Fruit acidity was generally low (<0.19%) for all the species. The results suggest potential for developing prickly pears for the fresh fruit market in south Texas.

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VARIATION IN FRUIT QUALITY CHARACTERISTICS OF PRICKLY PEARS (OPUNTIA SPECIES)

HortScience ◽

10.21273/hortsci.25.9.1173 ◽

1990 ◽

Vol 25 (9) ◽

pp. 1173G-1174

Author(s):

Joseph O. Kuti

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Germplasm Collection ◽

Titratable Acidity ◽

Quality Characteristics ◽

South Texas ◽

Soluble Solids ◽

Opuntia Species ◽

Standard Procedures ◽

Prickly Pears

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Effect of Soil Solarization and Fumigation on Productivity and Fruit Quality of Strawberry

HortScience ◽

10.21273/hortsci.41.4.972b ◽

2006 ◽

Vol 41 (4) ◽

pp. 972B-972

Author(s):

Mohamed Ragab

Keyword(s):

Ascorbic Acid ◽

Fruit Quality ◽

Methyl Bromide ◽

Root Length ◽

Total Yield ◽

Soluble Solids ◽

Crown Diameter ◽

Number Of Leaves ◽

And Control

A study of solarization and fumigation with methyl bromide (MB) on productivity and fruit quality of strawberry were investigated during two successive seasons of 2002–03. There were nine treatments: fumigation with methyl bromide (MB), solarization, their combination, and Nemaless. Results demonstrate that plant height, number of leaves per plant, average leaf area, root length, and crown diameter were significantly increased by fumigation with MB as compared with solarization or using Nemaless in the two tested seasons. Significant increments were obtained also in early and total yield, as well as total soluble solids and ascorbic acid when soil was fumigated with MB compared with solarization or using Nemaless. The highest total yield found with treatments was MB at 70 g/m2, followed by MB at 50 g/m2, 2-month solarization plus MB at 30 g/m2, 1 month plus MB at 30 g/m2, MB at 30 g/m2, 2 months solarization, one month solarization, Nemaless, and control in the both tested seasons, respectively. Nemaless caused significant increments in early and total yield compared with the control in the two tested seasons. The results of this study provide evidence to suggest that a better understanding of different fumigation methods may aid us in the efforts to improve management of strawberry production.

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186 INFLUENCE OF HYDROGEN CYANAMIDE AND WILTH IN ON BLOSSOM THINNING OF APPLE AND PLUM

HortScience ◽

10.21273/hortsci.29.5.455f ◽

1994 ◽

Vol 29 (5) ◽

pp. 455f-455

Author(s):

Esmaeil Fallahi ◽

Brenda R. Simons ◽

Max W. Williams

Keyword(s):

Fruit Quality ◽

Fruit Set ◽

Fruit Size ◽

Soluble Solids ◽

Full Bloom ◽

Mature Trees ◽

Hydrogen Cyanamide ◽

Fruit Thinning ◽

Yield And Quality

Effects of hydrogen cyanamide and Wilthin on blossom thinning and the consequences of thinning on fruit set, yield and fruit quality of `Rome Beauty' was studied. A full bloom application of hydrogen cyanamide at the rate of 0.25% (Dormex formulation) or 0.25% of Wilthin both followed by a fruit thinning by Sevin + NAA effectively thinned mature trees of `Rome Beauty' and had a similar effect on fruit set, yield and fruit quality. The effects of these two chemicals at these rates on several aspects of fruit set, yield and quality were similar to the effects of Elgetol. Hydrogen cyanamide, Elgetol and 0.25% Wilthin at full bloom resulted in a higher percentage of single fruit set, thus, less labor for hand thinning. Application of 0.37% Wilthin at 20% bloom or at full bloom resulted in larger fruit size, but induced fruit russetting. Soluble solids of fruit from trees with Elgetol, 0.37% Wilthin at 20% bloom or at full bloom were higher than fruit from other treatments. Hydrogen cyanamide at 0.50% resulted in a satisfactory level of blossom thinning in `Friar' plums.

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