Comparative Studies on the Quality and Lycopene Content of Pomelo (Citrus grandis Osbeck) Cultivars

Three cultivars of pomelo “Guanximiyou” (GX) and its variants “Hongroumiyou” (HR) and “Sanhongmiyou” (SH) were selected as experimental materials to evaluate the quality and edible value of the fruit. In this study, the fruit quality and lycopene contents were investigated. The results show that among the 3 cultivars used, the contents of soluble solids, vitamin C, and total phenol in the juice sac of SH were the highest, followed by HR and GX. SH has the largest fruit shape index, soluble sugar content: GX > HR > SH, and titratable acid content: GX < HR < SH. From our findings, the content of lycopene was the highest in SH, followed by HR and GX. SH has the greatest potential for production due to its appreciable content of lycopene and fruit quality.

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EVALUATION OF YIELD AND FRUIT QUALITY OF SEVERAL ECOTYPES OF CORNELIAN CHERRY (Cornus mas L.) IN POLISH CONDIOTIONS

Acta Scientiarum Polonorum Hortorum Cultus ◽

10.24326/asphc.2019.6.14 ◽

2019 ◽

Vol 18 (6) ◽

pp. 139-148

Author(s):

Iwona Szot ◽

Tomasz Lipa ◽

Bożena Sosnowska

Keyword(s):

Vitamin C ◽

Fruit Quality ◽

Titratable Acidity ◽

Shape Index ◽

Fruit Shape ◽

Fruit Weight ◽

Soluble Solids ◽

Cornelian Cherry ◽

Cornus Mas

Cornelian cherry is a little-known plant that can be grown in Poland both on a commercial and amateur scale. The commercial cornelian cherry plantations should be established using selected cultivars or vegetatively propagated valuable ecotypes, as only this guarantees a uniform yield, maturation and standardization of fruit quality. The experiment was carried out in 2014 and 2015 in the private plantation of cornelian cherry (Cornus mas L.) located in Dąbrowica, near Lublin (22.454 N; 51.270 E). The subject of the research were ecotypes No.: 1, 2, 3, 4, 5, 6, 7, 10, 11, 14, 15 obtained as seedlings in 1998. Cornelian cherry plants obtained from seeds differed very much in the yield and quality of fruit. The fruit characteristics for the examined ecotypes ranged to 1.63–2.21 g for fruit weight, 1.30–1.61 for fruit shape index, 10.13–15.32% for content of stone, 17.85–22.68% for soluble solids content (SSC), 2.32–3.0% for titratable acidity (TA), 6.59–8.36 for SSC/TA, 54.9–75.97 for vitamin C content. Among the ecotypes studied in terms of external fruit features, ecotypes No. 3 and 4 were distinguished due to the largest fruits (mass and diameter) and relatively small share of the stone in the whole mass of the fruit. However, due to the chemical composition, the fruits of ecotype No. 5 were distinguished by the content of extract, extract to acids ratio, sugar, dry matter, anthocyanins and vitamin C content. These fruits enjoyed 55% strong acceptability among adults. The indicated ecotypes can be used in breeding as well as in nursery for obtaining valuable varieties of cornelian cherry for production in Poland.

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Magnitude of Genotype × Environment Interactions Affecting Tomato Fruit Quality

HortScience ◽

10.21273/hortsci.47.6.721 ◽

2012 ◽

Vol 47 (6) ◽

pp. 721-726 ◽

Cited By ~ 11

Author(s):

Dilip R. Panthee ◽

Chunxue Cao ◽

Spencer J. Debenport ◽

Gustavo R. Rodríguez ◽

Joanne A. Labate ◽

...

Keyword(s):

New York ◽

Vitamin C ◽

Fruit Quality ◽

Tomato Fruit ◽

Heritability Estimate ◽

Field Trials ◽

Soluble Solids ◽

Quality Traits ◽

Titratable Acid ◽

Tomato Genotypes

There is a growing interest by consumers to purchase fresh tomatoes with improved quality traits including lycopene, total soluble solids (TSS), vitamin C, and total titratable acid (TTA) content. As a result, there are considerable efforts by tomato breeders to improve tomato for these traits. However, suitable varieties developed for one location may not perform the same in different locations. This causes a problem for plant breeders because it is too labor-intensive to develop varieties for each specific location. The objective of this study was to determine the extent of genotype × environment (G×E) interaction that influences tomato fruit quality. To achieve this objective, we grew a set of 42 diverse tomato genotypes with different fruit shapes in replicated trials in three locations: North Carolina, New York, and Ohio. Fruits were harvested at the red ripe stage and analyzed for lycopene, TSS, vitamin C, and TTA. Analysis of variance (ANOVA) revealed that there were significant differences (P < 0.05) among tomato genotypes, locations, and their interaction. Further analysis of quality traits from individual locations revealed that there was as much as 211% change in performance of some genotypes in a certain location compared with the average performance of a genotype. Lycopene was found to be most influenced by the environment, whereas TTA was the least influenced. This was in agreement with heritability estimates observed in the study for these quality traits, because heritability estimate for lycopene was 16%, whereas that for TTA was 87%. The extent of G×E interaction found for the fruit quality traits in the tomato varieties included in this study may be useful in identifying optimal locations for future field trials by tomato breeders aiming to improve tomato fruit quality.

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Tomato Fruit Quality and Content Depend on Stage of Maturity

HortScience ◽

10.21273/hortsci.41.6.1400 ◽

2006 ◽

Vol 41 (6) ◽

pp. 1400-1401 ◽

Cited By ~ 22

Author(s):

Lajos Helyes ◽

Zoltán Pék ◽

Andrea Lugasi

Keyword(s):

Fruit Quality ◽

Acid Content ◽

Tomato Fruit ◽

Soluble Solids ◽

Polyphenol Content ◽

B Values ◽

Cielab System ◽

Lycopene Content ◽

Green Stage ◽

Carbohydrate Contents

Soluble solids (Brixo), carbohydrate, organic acid, lycopene, polyphenols and HMF content of indeterminate round type tomato Lemance F1 fruits were measured in six ripeness stages from mature green to deep red stage. Color of fruits was determined by CIELab system. The L*, a*, b* values were received directly and used to calculate from which the a*/b* ratio was calculated. The Brixo, carbohydrate, lycopene and HMF content were the highest in the deep red stage. Carbohydrate contents constitute nearly 50% of the Brixo. The mature green stage had the lowest acid content but in subsequent stages it was fundamentally unchanged. Polyphenol content changed little during fruit ripening. Lycopene content changed significantly during maturation and accumulated mainly in the deep red stage. Analyses showed that a*/b* was closely correlated with lycopene and can be used to characterize stages of maturity in fresh tomatoes.

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Phthalanilic Acid with Biostimulatory Functions Affects Photosynthetic and Antioxidant Capacity and Improves Fruit Quality and Yield in Cowpea (Vigna unguiculata (L.) Walp.)

Agriculture ◽

10.3390/agriculture11111082 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1082

Author(s):

Ting Ma ◽

Qiong Wu ◽

Na Liu ◽

Rong Zhang ◽

Zhiqing Ma

Keyword(s):

Antioxidant Enzymes ◽

Vitamin C ◽

Vigna Unguiculata ◽

Fruit Quality ◽

Soluble Protein ◽

Growth And Development ◽

Sugar Content ◽

Soluble Sugar ◽

Photosynthetic Pigment ◽

Length Width

The widespread application of biostimulants with a growing trend represents sustainable practices aimed at improving growth and yield and alleviating stresses in green agricultural system. Phthalanilic acid (PPA), with biostimulatory functions, has been increasingly applied to fruit and vegetable production. However, its specific biostimulatory effects on growth and development of cowpea (Vigna unguiculata) plants is still unclear. In this study, the regulatory function of foliar spraying PPA at the flowering timing in morphometric (length, width, single pod weight and yield), physiological (relative electrical conductivity), and biochemical (antioxidant enzymes activity, photosynthetic pigment, malondialdehyde, vitamin C, soluble protein, and soluble sugar content) parameters of cowpea plants were investigated. In general, PPA treatments exhibited higher antioxidant enzymes activities (with an increase of 11.89–51.62% in POD), lower relative conductivity (with a decrease of 22.66–62.18%), increased photosynthetic pigment levels and amounts of free proline (with an increase of 24.62–90.52%), and decreased malondialdehyde. Furthermore, the length, width and weight of single pod, podding rate (with an increase of 19.64%), vitamin C, soluble protein (with an increase of 18.75%), and soluble sugar content were increased by 200 mg·L−1 PPA. These data, together with an increased yield of 15.89%, suggest that PPA positively regulates the growth and development, improving fruit quality and yield, especially at 200 mg·L−1. This study indicates that PPA has biostimulatory effects in cowpea production and shows application prospect in field cultivation.

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Watermelon Rootstock/Scion Relationships and the Effects of Fruit-Thinning and Stem-Pruning on Yield and Postharvest Fruit Quality

Agriculture ◽

10.3390/agriculture10090366 ◽

2020 ◽

Vol 10 (9) ◽

pp. 366

Author(s):

Merav Zaaroor-Presman ◽

Sharon Alkalai-Tuvia ◽

Daniel Chalupowicz ◽

Marina Beniches ◽

Abraham Gamliel ◽

...

Keyword(s):

Vitamin C ◽

Fruit Quality ◽

Nutritional Quality ◽

Quality Parameters ◽

Soluble Solids ◽

Fruit Thinning ◽

Lycopene Content ◽

Marketable Fruit ◽

Grafting Onto ◽

Better Than

This study examined the effects of stem-pruning and fruit-thinning on the yield of marketable watermelon fruit (>5 kg) and watermelon quality after four days of postharvest storage at 22 °C (marketing simulation). We examined the fruits from non-grafted and grafted plants (TZ and Nurit rootstocks) for two consecutive years. Grafting increased the number of marketable fruit per m2. The weight of the average marketable fruit was increased by pruning, but was not affected by thinning or by the choice of rootstock. The level of total soluble solids was higher among fruits from Nurit rootstock. Flesh texture was improved by grafting, but was not affected by thinning or pruning. Thinning improved the taste of the fruit significantly better than stem-pruning did. Grafting (both rootstocks) was associated with crispier fruits. The fruits from Nurit-grafted plants tasted best. The combination of grafting + fruit-thinning increased the fruit lycopene content. The highest levels of vitamin C were found among the fruit from Nurit-grafted plants and the pruned + Nurit-grafted plants, in particular. Overall, fruit quality was affected mainly by grafting onto Nurit rootstock in combination with fruit-thinning and less by stem-pruning. However, not all internal and nutritional quality parameters were significantly affected by the grafting + fruit-thinning treatment.

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Estimating the Genetic Architecture of Fruit Quality Traits in Melon Using a Genomic Library of Near Isogenic Lines

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.132.1.80 ◽

2007 ◽

Vol 132 (1) ◽

pp. 80-89 ◽

Cited By ~ 68

Author(s):

Iban Eduardo ◽

Pere Arús ◽

Antonio José Monforte ◽

Javier Obando ◽

Juan Pablo Fernández-Trujillo ◽

...

Keyword(s):

Fruit Quality ◽

Quantitative Trait ◽

Genomic Library ◽

Shape Index ◽

Fruit Shape ◽

Fruit Weight ◽

Soluble Solids ◽

Isogenic Line ◽

Soluble Solids Content ◽

Solids Content

A melon (Cucumis melo L.) genomic library of near-isogenic lines derived from the cross between the Spanish cultivar Piel de Sapo and the exotic accession PI 161375 has been evaluated for fruit quality traits in four different locations. Traits evaluated were fruit weight, soluble solids content, maximum fruit diameter, fruit length, fruit shape index, ovary shape index, external color, and flesh color. Among these traits, soluble solids content showed the highest genotype × environment interaction, whereas genotype × environment interactions for fruit shape and fruit weight were low. Heritability was high for all traits except soluble solids content, with the highest value for fruit shape and ovary shape. Ten to 15 quantitative trait loci were detected for soluble solids content, fruit diameter, fruit length, and fruit shape; and four to five for ovary shape, external color, and flesh color. Depending on the trait, between 13% and 40% of the detected quantitative trait alleles from PI 161375 increased the trait, and between 60% and 87% of them decreased it, resulting in some PI 161375 alleles of interest for breeding. Most of the quantitative trait loci detected in previous experiments could be verified with the near-isogenic line population. Future studies with the melon near-isogenic line genomic library will provide a better understanding of the genetic control of melon fruit quality in a wider context related to agronomy, genetics, genomics and metabolomics studies.

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Evaluation of crop yield and fruit quality in organic apple production

International Journal of Horticultural Science ◽

10.31421/ijhs/13/1/686 ◽

2007 ◽

Vol 13 (1) ◽

Author(s):

I. Gonda ◽

N. Rakonczás ◽

I. J. Holb

Keyword(s):

Vitamin C ◽

Crop Yield ◽

Fruit Quality ◽

Sugar Content ◽

Quality Parameters ◽

Soluble Solids ◽

Total Acid ◽

Total Sugar Content ◽

Solids Concentration ◽

Apple Cultivars

In this study, crop yield and fruit quality parameters (soluble solid concentration, sugar, total acid, and vitamin C content) of 15 apple cultivars including old, resistant and currently grown cultivars. The highest fruit yield among all 15 cultivars was obtained on CV. Jonagold with 15.5 kg/tree, while the lowest yield was measured on the resistant cultivar Reanda with 8.1 kg/tree. There were no significant differences among the cultivars in fruit diameter ranging from 70 mm in the case of cv. Húsvéti rozmaring to 82 mm for cv. Mutsu. Values of soluble solids concentration of the cultivars varied between 15.5% for cv. Téli Banán and 19.2% for cv. Renora. Sugar content values showed a similar tendency to soluble solids content. The highest and lowest total sugar content was observed on cvs. Jonagold and Renora and cv. Retina with 17% and 12.4%, respectively. Total acid content values ranged between 0.18% and 0.53% for cvs. Jonagold and Remo, respectively. Values of vitamin C content for the 15 apple cultivars varied between 2 mg% and 4 mg% for cv. Retina and cv. Mutsu, respectively.

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Fruit performance of kiwifruit in the loess area of Northwest China

10.1101/633206 ◽

2019 ◽

Author(s):

Kaibin Guo ◽

Zhen Guo ◽

Yun Guo ◽

Guang Qiao

Keyword(s):

Soil Ph ◽

Fruit Quality ◽

Soil Property ◽

Pearson Correlation ◽

Soluble Sugar ◽

Northwest China ◽

Fruit Shape ◽

Soluble Solids ◽

Shanxi Province ◽

Loess Area

AbstractAttempts had been made to provide evident insight into the performance of fruit quality and the status of soil property, and explicate the soil property factors that dominantly affect the fruit quality of kiwifruit. Currently, 8-year-old kiwifruit cultivar ‘Hayward’, which was grown in Zhouzhi County (108°37′ E, 33°42′N), Shanxi Province of China, was used as materials. The results of Pearson correlation coefficient illustrated that the soil organic matter (SOM) content was positively related to soil properties except the soil PH. Moreover, based on the canonical correlation analysis (CCA), canonical variables alkaline hydrolyzable-N (AN), available ferrum (AFe), available boron (AB), PH in soil property index and the fresh weight of single fruit (FW), fruit shape index (FI), total soluble solids (TSS), titratable acidity (TA), total soluble sugar (SS) in fruit quality parameter were selected. And the ‘best’ regression equation (model) indicated that the effects of soil property somewhat varied among ‘Hayward’ fruit qualities in the loess area of Northwest China. Specifically, FW and SS could be mainly affected by soil AN, and FI affected by soil AB and PH. Fruit SS mostly depended upon soil AFe, whereas TSS was affected by soil AN, AFe and PH. The effect of soil PH on fruit quality is probably achieved, however, affecting the absorption of soil nutrients.

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Effects of Chelated Iron on Roots under Different Mulching Materials on Fruit Quality of Huangguogan

E3S Web of Conferences ◽

10.1051/e3sconf/202020602016 ◽

2020 ◽

Vol 206 ◽

pp. 02016

Author(s):

Zhaofang Chen ◽

Liting Wen ◽

Liancong Yang ◽

Youting Yang ◽

Liping Tan ◽

...

Keyword(s):

Fruit Quality ◽

Soluble Sugar ◽

Fruit Weight ◽

Soluble Solids ◽

River Sand ◽

Black Film ◽

Titratable Acid ◽

Acid Ratio ◽

Chelated Iron

In this experiment, Huangguogan in Shimian County was selected as the experimental material, and the effects of different treatments on the fruit quality of Huangguogan were studied by mulching treatments with black film, straw, horticultural cloth and river sand. The results of this study showed that the application of chelated iron to the roots under different mulching materials could significantly improve the fruit quality, and the application of chelated iron to the roots under different mulching materials had different effects on fruit quality. The river sand mulching treatment had the highest single fruit weight, vertical and horizontal diameters, while CK had the lowest one. The four mulching treatments all increased the contents of total soluble solids, soluble sugar and sucrose. The river sand mulching treatment had the highest contents, which were 13.96%, 13.09 and 6.93 g.100 mL-1, respectively. There were significant differences in the titratable acid, vitamins C and sugar-acid ratio between the different mulching treatments, and the river sand mulching treatment had the highest effect. In general, the river sand mulching treatment had the best effect on promoting fruit quality, and plastic film mulching treatment had the worst effect.

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