PRELIMINARY RESULTS REGARDING THE FRUIT QUALITY AND YIELD OF SOME BLUEBERRY GENOTYPES

Vaccinium corymbosum is one of the berry species with economic and food interest to Romanian growers and consumers. The development of blueberrty crop is a result of breeding activity, which has generated many cultivars of quality fruit and high productivity. The characters that are of economic interest in the cultivation of blueberries depend on the area of cultivation where the new cultivars are obtained. The study was conducted in summer 2020 in an experimental plot established in 2015 with seven blueberry genotypes, at Research Institute for Fruit Growing, Pitesti, Romania in the Small Fruit Laboratory, having an experience in the field of more than 40 years. The objective at this study is to compare some of fruit characteristics from genotypes 'Azur', 'Delicia', 'Duke', 'Northblue', 'Simultan', '4/6' and '6/38': plant yield, average fruit weight, fruit length, fruit diameter, the soluble solids, fruit acidity or pH, fruit firmness. During this study 'Delicia' cv. proved to have the highest production per plant (4.20 kg plant), the highest values of fruit diameter (19.70 mm), and the highest value of fruit total titratable acidity (01.25 %).

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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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Physicochemical properties of seven outstanding strawberry (Fragaria x ananassa Duch.) varieties cultivated in Cundinamarca (Colombia) during maturation

Ciencia y Tecnología Agropecuaria ◽

10.21930/rcta.vol19_num1_art:848 ◽

2018 ◽

Vol 19 (1) ◽

Author(s):

Gerhard Fischer ◽

David López-Valencia ◽

Manuel Sánchez-Gómez ◽

John Fabio Acuña-Caita

Keyword(s):

Titratable Acidity ◽

Fruit Weight ◽

Fragaria X Ananassa ◽

Maturity Index ◽

Soluble Solids ◽

Maturity Stage ◽

Fresh Weight ◽

Respiration Rates ◽

Total Titratable Acidity ◽

Maturation State

The strawberry market in Cundinamarca (Colombia) is mainly size driven with no consideration for its maturation state and nutritional quality, wasting therefore, its organoleptic and nutritional potential. For that reason, the physicochemical differences among seven strawberry varieties (Albión, Dulce Ana, Lucía, Monterrey, Ruby June, Sabrina and Ventana) cultivated in the municipality of Sibaté (Cundinamarca) were established. Fruits collected from a productive plot with homogeneous cultivation management conditions were analyzed in six maturity states, establishing the degree of red pigmentation according to the Colombian Standard ntc 4103. Fresh weight, size, color, firmness, total soluble solids (tss), total titratable acidity (tta), maturity and respiration indices were evaluated. Fruits in stages 4, 2 and 3 developed their largest size and weight, where the variety Dulce Ana stands out. The highest color index values were found in the maturity stage 5 in the variety Ventana. Moreover, the highest firmness values were recorded in stages 4 and 5 in the varieties Monterrey and Ventana. The varieties Sabrina, Dulce Ana and Monterrey accumulated the highest tss concentration and the last two showed the best maturity relations. Respiration rates increased with maturation, especially from stage 3. The results suggest that the optimum commercialization and consumption points are stages 3 and 4, namely because these stages exhibit the highest maturity index and fruit weight. Among the varieties studied, Monterrey stands out due to its firmness and maturity index.

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Potassium nutrition as a strategy to mitigate salt stress in melon grown under protected cultivation

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n6p3219 ◽

2021 ◽

Vol 42 (6) ◽

pp. 3219-3234

Author(s):

Giordanio Bruno Silva Oliveira ◽

◽

Francisco de Assis de Oliveira ◽

Sandy Thomaz dos Santos ◽

Mychelle Karla Teixeira de Oliveira ◽

...

Keyword(s):

Salt Stress ◽

Nutrient Solution ◽

Saline Water ◽

Block Design ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Internal Cavity ◽

Potassium Nutrition ◽

Fruit Diameter

The use of saline water is one of the major challenges of agriculture, as it can cause nutritional imbalances and thus reduce crop yield. This study proposes to examine the efficiency of potassium nutrition as a salt stress-mitigating agent in melon grown in a protected environment. The experiment was laid out in a randomized-block design with ten treatments in a 2 × 4 factorial arrangement represented by two melon cultivars (McLaren and SV1044MF) and four nutrient solutions (S1 - standard nutrient solution, 2.5 dS m-1; S2 - nutrient solution salinized with NaCl, 5.0 dS m-1; S3 - nutrient solution salinized with NaCl + 50% K, 6.5 dS m-1; and S4 - nutrient solution salinized with NaCl + 100% K, 7.5 dS m-1). Yield (average fruit weight, production, fruit diameter, internal cavity, and pulp thickness), quality (pulp firmness, total sugars, soluble solids [SS], vitamin C, pH, titratable acidity [TA] and SS/TA ratio) and nutritional (K, Na and K/Na ratio) variables were evaluated. Plants fertigated with standard nutrient solution showed the highest values for fruit weight (1,190.6 g), production (2,381.3 g per plant), fruit diameter (13.6 cm) and pulp thickness (2.6 cm). Cultivar McLaren produced heavier fruits (931.4 g) with larger diameter (12.4 cm) and pulp thickness (2.4 cm). The addition of NaCl to nutrient solution induced a reduction in the yield variables but did not influence fruit quality. The addition of extra K to salinized nutrient solution did not mitigate the deleterious effect of salinity on the yield of melon.

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Yield, physicochemical quality, and antioxidant capacity of “beef” and wild tomato fruits (Solanum lycopersicum L.) as a function of the electrical conductivity of the nutrient solution

Agronomía Colombiana ◽

10.15446/agron.colomb.v35n3.64905 ◽

2017 ◽

Vol 35 (3) ◽

pp. 330-339

Author(s):

María Teresa Martínez-Damían ◽

Oscar Cruz-Álvarez ◽

Juan Enrique Rodríguez-Pérez ◽

María Teresa Colinas-León ◽

Miguel Angel Góngora-Canto

Keyword(s):

Electrical Conductivity ◽

Antioxidant Capacity ◽

Nutrient Solution ◽

Titratable Acidity ◽

Fruit Weight ◽

Soluble Solids ◽

Physicochemical Quality ◽

Solanum Lycopersicum L ◽

Total Titratable Acidity ◽

Hue Angle

The objective of this study was to evaluate the response of three levels of electrical conductivity (2.0, 2.5 and 3.0 dS m-1) of Steiner’s nutrient solution on the yield, physicochemical quality, and antioxidant capacity of fruits from seven tomato genotypes and wild types of tomato (kidney selections). The yield, number of fruits per cluster (NFPC), average fresh fruit weight (AFWF), color, firmness, total soluble solids (TSS), total titratable acidity (TTA), vitamin C (VC), total phenols (TP), lycopene (LY) and antioxidant capacity (AC). The use of 2.5 and 3.0 dS m-1 increased the hue angle (49.05°) and TTA (0.35 and 0.36% citric acid). Among genotypes, L-51H and L-76H showed better performance (16.80 and 16.91 kg m-2, respectively), where L-28 stood out for its values of TSS, TTA, VC, TP and AC. Regarding the wild genotypes, the EC modification did not increase the yield; however, the use of 3.0 dS m-1 allowed the best results among the wild selections were SS3 (yield, AFWF and LY) and SS5 (NFPC, VC, TP and AC). The modification of the EC did not affect the yield, however, if it affected the physicochemical quality and antioxidant capacity of the analyzed materials.

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Sapote mamey [Pouteria sapota (Jacquin) H.E. Moore & Stearn]: A potential fruit crop for subtropical regions of Michoacan, Mexico

Canadian Journal of Plant Science ◽

10.4141/p06-028 ◽

2007 ◽

Vol 87 (3) ◽

pp. 537-544

Author(s):

Jeannette Sofía Bayuelo-Jiménez ◽

Norma Rivera Alcantar ◽

Iván Ochoa

Keyword(s):

Cluster Analysis ◽

Discriminant Analysis ◽

Seed Weight ◽

Titratable Acidity ◽

Fruit Weight ◽

Canonical Discriminant Analysis ◽

Soluble Solids ◽

Fruit Characteristics ◽

Total Soluble Solids ◽

Physical And Chemical

Genotypes of sapote mamey, Pouteria sapota [(Jacquin) H.E. Moore & Stearn] from central-western Michoacán in Mexico were characterized based on physical and chemical fruit characteristics. Cluster analysis of data indicated seven distinct genotype clusters. The greatest variability among clusters was attributed to physical and chemical fruit characteristics. Those were fruit weight, length, width, shape and texture; the ratio of fruit weight to seed weight; seed weight and length; mesocarp thickness and weight; epicarp weight; and the compositional components titratable acidity (TA), protein, total soluble solids (TSS), TSS to TA ratio and TSS to pH ratio. Canonical discriminant analysis was a used to identify the most desirable sapote mamey fruits based on physical (fruit and mesocarp weight) and compositional parameters. Two canonical discriminant functions explained >90% of the accumulated variation a mong the seven clusters of genotypes. Fruit weight, mesocarp thickness, and the ratio of total soluble solids to titratable acidity were dominant in the first function; and fruit weight and mesocarp thickness were dominant in the second. These morphological variables could be used for selecting sapote mamey trees with uniform fruit quality for either direct consumption or processing. Key words: Sapotaceae, sapote mamey, Pouteria sapota, cluster analysis, canonical discriminant analysis, fruit, morphological characterization

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Fruit quality of a traditional pineapple cultivar (Turiaçu) compared to the most popular cultivar (Pérola) in Brazil

Australian Journal of Crop Science ◽

10.21475/ajcs.19.13.04.p1452 ◽

2019 ◽

Vol 13 ((04) 2019) ◽

pp. 546-551 ◽

Cited By ~ 1

Author(s):

Fabrício de Oliveira Reis ◽

José Ribamar Gusmão Araujo ◽

Heder Braun ◽

Augusto César Vieira Neves Junior ◽

Anna Paula A Pereira

Keyword(s):

Titratable Acidity ◽

Fruit Weight ◽

The State ◽

Soluble Solids ◽

Pulp Yield ◽

Chemical Characteristics ◽

Consumer Market ◽

Total Titratable Acidity ◽

Green Stage

Turiaçu is a traditional pineapple cultivar in the state of Maranhão, Brazil, and its fruits have high potential for the fresh fruit market due to consumer acceptance. This cultivar is in the process of domestication, but information on the quality of its fruits and their standards for marketing is scarce. The objective of this study was to evaluate the biometric and chemical characteristics of the Turiaçu pineapple cultivar and the Pérola cultivar, which are grown in the main pineapple producing areas—Turiaçu, and São Domingos do Maranhão—in the state of Maranhão. The fruits were harvested at the green stage to evaluate the following biometric characteristics: fruit weight, infructescence weight, pulp yield, crown, peel and total residues, and base to apex diameter ratio; and the following chemical characteristics—total soluble solids (TSS), total titratable acidity (TTA), and TSS to TTA chemical ratio. The Turiaçu cultivar presented higher fruit and infructescence weights, more cylindrical fruits, and pulp with higher TSS concentration and less acidity, compared to the Pérola cultivar. Fruits of the Turiaçu cultivar had more desirable biometric and chemical qualities for the consumer market— they were large, cylindrical, sweet, and with low acidity—, compared to those of the Pérola cultivar.

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Effects of Short Day Conditioning, Chilling and GA3 Treatments to Yield and Fruit Quality in Strawberry Plug Transplants Aiming Early Fruit Production

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha4119018 ◽

2013 ◽

Vol 41 (1) ◽

pp. 263

Author(s):

Emine ÖZDEMİR ◽

Nurettin KAŞKA ◽

Kazim GÜNDÜZ ◽

Sedat SERÇE

Keyword(s):

Fruit Quality ◽

Total Yield ◽

Titratable Acidity ◽

Fruit Production ◽

Fruit Weight ◽

Soluble Solids ◽

Day Length ◽

Fruit Characteristics ◽

Short Day ◽

Growing Seasons

In this study, we tested the effects of short day (SD), chilling (Ch) and gibberalic acid (GA3) treatments on the yield and fruit characteristics of ‘Camarosa’ and ‘Sweet Charlie’ plug plants under a freeze-protected greenhouse in Mediterranean conditions for two growing seasons in 2006-2007 and 2007-2008. The treatments included control (ambient day length and temperature); SD (8 h days) and ambient temperature; SD + Chilling (Ch) (18/12°C day/night temperatures); SD + Ch (10°C); SD + Ch (2°C); and, GA3 (10 ppm applied to the plants in November). In each growing season, the plug plants were planted in mid-August using bag culture. Yield, fruit weight, firmness, total soluble solids (SS), titratable acidity (TA), and SS/TA ratio were investigated. Considerable amounts of early yield (March and April) were recovered from ‘Sweet Charlie’; 116 and 72 g/plant in the first and second growing seasons, respectively. ‘Sweet Charlie’ also had consistently higher total yield than ‘Camarosa’ (457 vs. 400 g/plant in the 2006-2007 season and 446 vs. 406 g/plant in the 2007-2008 season). Treatment did not have a consistent effect on the fruit quality traits measured. The results indicated that although SD conditioning, Ch and GA3 treatments may have an effect on the total and early yield of strawberries, these effects may be cultivar-dependent and further regulated by environmental factors. Therefore, we propose that low-chilling varieties be utilized for early fruit production that can initiate flower buds in warmer, longer days.

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Assessment on performance and variability in different sweet orange (Citrus sinensis Obseck) cultivars under Punjab conditions

Journal of Applied and Natural Science ◽

10.31018/jans.v9i2.1274 ◽

2017 ◽

Vol 9 (2) ◽

pp. 780-783

Author(s):

Arvind Kumar Baswal ◽

H. S. Rattanpal ◽

Gurteg Singh Uppal ◽

K. S. Gill

Keyword(s):

Citrus Sinensis ◽

Sweet Orange ◽

Titratable Acidity ◽

Morphological Characterization ◽

Fruit Weight ◽

Soluble Solids ◽

Genetic Advance ◽

Total Soluble Solids ◽

Fruit Length ◽

Fruit Diameter

Based on morphological characterization, the performance of eighteen sweet orange, (Citrus sinensis Obseck) cultivars were evaluated. On the basis of two year data, the maximum mean fruit weight (316.25 gm) was recorded in Moro, while the maximum mean fruit diameter and mean fruit length was recorded in Mosambi and Olinda Valencia (87.32 mm and 81.33 mm, respectively). Albedo thickness was recorded maximum in Ruby Nucellar (3.42 mm). Highest total soluble solids was recorded in cultivar Moro (11.450 brix), while the titratable acidity was recorded maximum in Valencia Calizonida (1.21 %). Fruit axis diameter and Fruit rind thickness were recorded maximum in Rhode Red Valencia and Vernia (15.12 mm and 8.11 mm, respectively). In the variability studies, the maximum genotypic coefficient of variance (GCV) and phenotypic coefficient of variance (PCV) was recorded maximum for titratable acidity (27.88 and 27.94, respectively) followed by albedo thickness (23.77 and 23.78, respectively) and fruit weight (21.52 and 21.67, respectively). Genetic advance per cent of mean was recorded for titratable acidity (57.31%) followed by albedo thickness (48.96 %) and fruit weight (44.03 %) suggesting that further selection will be effective for improvement in these traits.

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High-density linkage map construction and identification of loci regulating fruit quality traits in blueberry

Horticulture Research ◽

10.1038/s41438-021-00605-z ◽

2021 ◽

Vol 8 (1) ◽

Author(s):

Molla F. Mengist ◽

Hamed Bostan ◽

Elisheba Young ◽

Kristine L. Kay ◽

Nicholas Gillitt ◽

...

Keyword(s):

Linkage Map ◽

Fruit Quality ◽

Titratable Acidity ◽

Fruit Weight ◽

High Density ◽

Soluble Solids ◽

Quality Traits ◽

Total Soluble Solids ◽

Fruit Quality Traits ◽

High Density Linkage Map

AbstractFruit quality traits play a significant role in consumer preferences and consumption in blueberry (Vaccinium corymbosum L). The objectives of this study were to construct a high-density linkage map and to identify the underlying genetic basis of fruit quality traits in blueberry. A total of 287 F1 individuals derived from a cross between two southern highbush blueberry cultivars, ‘Reveille’ and ‘Arlen’, were phenotyped over three years (2016–2018) for fruit quality-related traits, including titratable acidity, pH, total soluble solids, and fruit weight. A high-density linkage map was constructed using 17k single nucleotide polymorphisms markers. The linkage map spanned a total of 1397 cM with an average inter-loci distance of 0.08 cM. The quantitative trait loci interval mapping based on the hidden Markov model identified 18 loci for fruit quality traits, including seven loci for fruit weight, three loci for titratable acidity, five loci for pH, and three loci for total soluble solids. Ten of these loci were detected in more than one year. These loci explained phenotypic variance ranging from 7 to 28% for titratable acidity and total soluble solid, and 8–13% for pH. However, the loci identified for fruit weight did not explain more than 10% of the phenotypic variance. We also reported the association between fruit quality traits and metabolites detected by Proton nuclear magnetic resonance analysis directly responsible for these fruit quality traits. Organic acids, citric acid, and quinic acid were significantly (P < 0.05) and positively correlated with titratable acidity. Sugar molecules showed a strong and positive correlation with total soluble solids. Overall, the study dissected the genetic basis of fruit quality traits and established an association between these fruit quality traits and metabolites.

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Fruit quality of ‘Eva’ e ‘Princesa’ apples grown under nitrogen fertigation in semiarid climate

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v19n10p967-972 ◽

2015 ◽

Vol 19 (10) ◽

pp. 967-972 ◽

Cited By ~ 1

Author(s):

João M. de S. Miranda ◽

Ítalo H. L. Cavalcante ◽

Inez V. de M. Oliveira ◽

Paulo R. C. Lopes ◽

Joston S. de Assis

Keyword(s):

Fruit Quality ◽

Skin Color ◽

Titratable Acidity ◽

Soluble Solids ◽

Economic Viability ◽

Fruit Firmness ◽

Fruit Characteristics ◽

Apple Cultivars ◽

Fruit Mass

ABSTRACTThe production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The experimental design consisted of randomized blocks, with treatments distributed in a factorial arrangement 2 x 4, corresponding to apple cultivars (Eva and Princesa) and nitrogen doses (40; 80; 120 and 160 kg of N ha-1), with four replications and three plants in each plot. The fruit characteristics, such as fruit mass, skin color (luminosity, chromaticity, and colour angle), size (width and length), pulp firmness, titratable acidity (TA), soluble solids (SS) and the SS/TA ratio, were recorded. Nitrogen doses do not affect fruit quality of studied apple cultivars. The fruit quality attributes are different between apple cultivars: fruit firmness, SS/TA ratio, fruit mass and fruit diameter are superior for Princesa cultivar, while the fruit length for Eva cultivar is superior.

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