scholarly journals Berry quality of hybrid grapevine (Vitis) cultivars grown in the field and in a polytunnel

2019 ◽  
Vol 28 (3) ◽  
Author(s):  
Mariana Maante-Kuljus ◽  
Ele Vool ◽  
Leila Mainla ◽  
Marge Starast ◽  
Kadri Karp

The aim of this research was to determine the effect of vineyard location and cultivation system (polytunnel compared to field) on hybrid grapevine berry quality in cold climate conditions. The study was conducted with the hybrid grapevine cultivars ‘Hasanski Sladki’, ‘Zilga’ and ‘Supaga’. Experimental vineyards were located at different sites in a polytunnel and in the field. Soluble solids content ranged from 13.8 to 25.4 °Brix. For all cultivars cultivation in the tunnel had a positive effect on soluble solids content for two experimental years out of three. Acid content was high, ranging from 1.04 to 1.76 g 100 g-1 FW. Growing ‘Zilga’ and ‘Supaga’ in the tunnel reduced titratable acid content every year but for ‘Hasanski Sladki’ in two years. Phenolic content ranged from 53 to 540 g 100 g-1 FW and anthocyanin from 30 to 162 mg 100 g-1 FW. Accumulation of phenols and anthocyanins were affected by location and cultivation methods. For ‘Hasanski Sladki’ in the tunnel, cultivation had a positive effect on phenolic content but for ‘Zilga’ not in every year.

2020 ◽  
Vol 48 (2) ◽  
pp. 770-782
Author(s):  
Virág CSORBA ◽  
Magdolna TÓTH ◽  
Anna M. LÁSZLÓ ◽  
Levente KARDOS ◽  
Szilvia KOVÁCS

Due to their outstanding anthocyanin content, elderberries are mainly used in the food industry to produce pigment concentrations. Thanks to the increase in demand, elderberry is grown on ever greater areas in Hungary and in neighbouring countries. Cultivar use, however, is very one-sided, being practically restricted to ‘Haschberg’. As this cultivar has many negative properties, growers have begun to plant and test new cultivars. When determining the commodity value of cultivars, it is important to examine not only the physical traits of the fruit, but also their main chemical parameters. In the present experiment the chemical properties (soluble solids and titratable acid content, total polyphenol and anthocyanin content, antioxidant capacity) of the fruit of 11 elderberry cultivars (‘Haidegg 13’, ‘Haidegg 17’, ‘Haschberg’, K3, ‘Korsör’, ‘Samdal’, ‘Samidan’, ‘Samocco’, ‘Sampo’, ‘Samyl’, ‘Weihenstephan’) were analysed in three consecutive years. In addition to the comparative evaluation of the cultivars, this work also aimed to discover correlations between the components and to study the effect of the year on the chemical composition of the fruit. Significant differences were found between the cultivars for the soluble solids content (F(10;8.74)=9.71; p=0.001), the titratable acid content (F(10;22)=7.91; p<0.001), the polyphenol content (F(10;22)=9.77; p<0.001), the anthocyanin content (F(10;8.52)=36.18; p<0.001) and the antioxidant capacity (F(10;22)=3.61; p=0.006). A year effect was proved for the water-soluble solids content (F(2;30)=4.02; p=0.028) and the antioxidant capacity (F(2;30)=5.21; p=0.011). Among the chemical properties, a significant positive linear correlation was only detected between the polyphenol and anthocyanin contents (r=0.91; p<0.001). Among the cultivars, ‘Sampo’, ‘Samidan’ and ‘Weihenstephan’ exhibited outstanding polyphenol and anthocyanin contents. The soluble solids content and antioxidant capacity of ‘Haidegg 17’ were also promising.


2008 ◽  
Vol 18 (1) ◽  
pp. 100-105 ◽  
Author(s):  
G. Lysiak ◽  
W.J. Florkowski ◽  
S.E. Prussia

Peaches (Prunus persica) were evaluated for storability after dipping in a 2% calcium chloride (CaCl2) solution at 20 °C for 30 min and storing them at 4 °C for 2 weeks in boxes uncovered or covered with polyethylene bags. Generally, there were significant improvements in storability resulting from the CaCl2 and the polyethylene barrier. The CaCl2 treatment improved firmness, largely maintained the soluble solids content, and increased the ratio of soluble solids-to-titratable acid ratio. Polyethylene bags minimized weight loss, and two out of three times, bagged fruit had lower acids after storage than did the control.


Author(s):  
Furkan Cihad Akbaş ◽  
Mehmet Ali Sarıdaş ◽  
Erdal Ağçam ◽  
Gülşah Selcen Keskinaslan ◽  
Rojbin Kamar ◽  
...  

Strawberry is an important fruit species whose production is increasing in the world and in our country due to its unique taste and aroma. It is known that the yield, taste and other important quality components of strawberry fruits are affected by the genetic structure as in many fruit species. In this context, a large amount of strawberry varieties have been developed as a result of strawberry breeding studies in the world. Similarly, breeding studies have been carried out at different intensities for many years at Çukurova University. In this study, the genotypes coded ‘33’, ‘36’ and ‘61’, which have become prominent as a result of the strawberry breeding program in our department, and commercial varieties such as ‘Fortuna’, ‘Rubygem’ and ‘Festival’, which are widely cultivated in the Mediterranean region, were compared in term of the properties such as soluble solids content (SSC), pH, fruit acid content and firmness during the extensive harvest period (January-May). As a result of the study, small amount of production was obtained in Mediterranean climatic conditions, and the highest SSC and flesh firmness values were obtained in the varieties and genotypes analysed in January. In terms of genotypes; the ‘36’ coded attracted attention with its relatively low acid content, as well as being higher than others with its SSC values varying between 8.0% and 13.1% throughout the season. Despite the strength of this genotype in terms of taste, it was found to be quite soft compared to commercial varieties (1.10-1.20 lb/inch2) with flesh firmness of 0.63 lb/inch2. It is thought that it is not possible to obtain the best quality variety in all aspects due to physiological and genetic reasons. However, strawberry breeders should aim to develop strawberry varieties that consist the characteristics at the highest levels in line with the fundamental goals they set.


1961 ◽  
Vol 12 (1) ◽  
pp. 56 ◽  
Author(s):  
JF Kefford ◽  
BV Chandler

A study was made of the effects of rootstock on the composition of Washington Navel oranges grown on eight rootstocks and Valencia Late oranges grown on three rootstocks in several regions during six seasons. Among the three major commercial rootstocks, trifoliate orange and rough lemon exerted contrasting influences on orange composition, while sweet orange occupied an intermediate position. The effects of rootstock were similar on both scion varieties but were more marked with Washington Navel oranges. Trifoliate orange stock tended to give high yields of juice which was high in acidity and soluble solids content but low in ascorbic acid content and in bitter taste when canned. Rough lemon stock tended to give low yields of juice which was lam- in acidity and soluble solids content but high in ascorbic acid content and in bitter taste. A positive correlation was demonstrated between the bitter taste of canned juices and the concentrations of limonoid bitter principles in the peel of Washington Navel oranges, and in the peel and seeds of Valencia Late oranges. Trifoliate orange stock promoted the disappearance of bitter principles from all parts of the fruit with advancing maturity, but rough lemon stock retarded this process. Tangelo and Cleopatra mandarin stocks resembled trifoliate orange in their effects on orange composition. while sweet lime, Kusaie lime, and East Indian lime stocks resembled rough lemon.


2009 ◽  
Vol 70 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Marek Gajewski ◽  
Zenon Węglarz ◽  
Anna Sereda ◽  
Marta Bajer ◽  
Agnieszka Kuczkowska ◽  
...  

Quality of Carrots Grown for Processing as Affected by Nitrogen Fertilization and Harvest TermIn 2007-2008 the effect of nitrogen fertilization and harvest term on quality of two carrot cultivars was investigated. The field experiment was carried out in Żelazna Experimental Station of Warsaw University of Life Sciences. Karotan F1and Trafford F1cultivars, commonly grown for juice industry, were the objects of the experiment. Carrot seeds were sown at the beginning of May. Nitrogen fertilization was applied in five rates, ranged from 0 to 120 kg·ha-1and in two terms — before sowing and in the middle of growing season. Roots were harvested in three terms: mid-September, mid-October and the first decade of November. After harvest there were determined: nitrates (NO3) content in carrot roots and juice, soluble solids, colour parameters of juice in CIE L*a*b*system. The dose and the term of nitrogen fertilization influenced nitrates content in carrots, and the highest NO3concentration was found in carrots fertilized with 120 kg·ha-1of N before sowing. Karotan showed higher nitrates accumulation than Trafford. The content of nitrates in the roots was markedly higher than in carrot juice. Nitrates content in carrots decreased with delaying of harvest time, in opposite to soluble solids content. Soluble solids content and colour parameters of carrot juice were not affected by nitrogen fertilization, but the lowest L*, a*and b*values were observed at the last term of harvest.


HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 520e-520
Author(s):  
Juan E Manzano ◽  
Oswaldo Valor

Mango fruits `Criollo de Bocado' harvested at the mature-green stage were treated with a hydrothermic treatment of 55 °C for 3 min and stored for 20 days at temperatures of 10 ± 2, 15 ± 2 and 28 ± 2 °C. A randomized design 2 × 3 × 4 with three replications was used. Some chemical parameters were analyzed, such as total soluble solids content (% TSS), pH, tritatable acidity, and TSS/tritatable acidity ratio. TSS content increased with storage time at low temperature. The pH increased measurably with storage temperature, while tritatable acidity values results had inconsistent data.


2019 ◽  
Vol 12 ◽  
pp. 01018
Author(s):  
V.B. Costa ◽  
S.B. de Andrade ◽  
P.L.P.K. Lemos ◽  
A. Bender ◽  
C. Goulart ◽  
...  

The Campanha Gaucha region, southern Brazil, has received significant investments in Viticulture during the last decades, especially for the production of quality wines. However, implementing the production of American and hybrid grapes in this region constitutes and opportunity to supply the increasing demand of the grape juice market in Brazil. Juices of two varieties, “Bordô” and “Concord”, from two locations, Dom Pedrito and Santana do Livramento, were analysed in terms of the following physico-chemical aspects: total city, volatile acidity, density, pH, soluble solids content, color intensity, and hue. “Bordô” juices presented higher total acidity and did not differ in relation to location. Higher volatile acidity was found in “Concord” juice from Santana do Livramento. Higher pH was found in the variety “Concord” and in the location Dom Pedrito. For this same location, the “Concord” grape juices showed higher soluble solids values. Color intensity was higher in Santana do Livramento. Color hue was higher in Dom Pedrito. Both variety and location impacted significantly on physico-chemical aspects of grape juices, although all the grapes were produced within the Campanha Gaucha region.


Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 302
Author(s):  
Konni Biegert ◽  
Daniel Stöckeler ◽  
Roy J. McCormick ◽  
Peter Braun

Optical sensor data can be used to determine changes in anthocyanins, chlorophyll and soluble solids content (SSC) in apple production. In this study, visible and near-infrared spectra (729 to 975 nm) were transformed to SSC values by advanced multivariate calibration models i.e., partial least square regression (PLSR) in order to test the substitution of destructive chemical analyses through non-destructive optical measurements. Spectral field scans were carried out from 2016 to 2018 on marked ‘Braeburn’ apples in Southwest Germany. The study combines an in-depth statistical analyses of longitudinal SSC values with horticultural knowledge to set guidelines for further applied use of SSC predictions in the orchard to gain insights into apple carbohydrate physiology. The PLSR models were investigated with respect to sample size, seasonal variation, laboratory errors and the explanatory power of PLSR models when applied to independent samples. As a result of Monte Carlo simulations, PLSR modelled SSC only depended to a minor extent on the absolute number and accuracy of the wet chemistry laboratory calibration measurements. The comparison between non-destructive SSC determinations in the orchard with standard destructive lab testing at harvest on an independent sample showed mean differences of 0.5% SSC over all study years. SSC modelling with longitudinal linear mixed-effect models linked high crop loads to lower SSC values at harvest and higher SSC values for fruit from the top part of a tree.


2017 ◽  
Vol 45 (1) ◽  
pp. 120-125 ◽  
Author(s):  
Ersin ATAY ◽  
Seckin GARGIN ◽  
Ahmet ESITKEN ◽  
N. Pinar GUZEL ◽  
A. Nilgun ATAY ◽  
...  

Orchard performance is influenced by weed competition. In this study, the effects of weed competition on nutrient contents, chemical and physical fruit quality properties were sought. The study was carried out in a high-density apple orchard (‘Golden Delicious’/M.9) over two consecutive growing seasons. The effect of weed competition was studied at three different levels: weak, moderate and strong. Fruit firmness, soluble solids content, macronutrients (such as nitrogen, potassium and calcium) and potassium+magnesium/calcium ratio in fruit were significantly affected by weed competition. Strong weed competition negatively affected soluble solids content and potassium+magnesium/calcium ratio. In both trial years, soluble solids content was significantly higher in weak weed competition. In the first year of the study, soluble solids content ranged between 13.77±0.06% (strong weed competition) and 15.20±0.10% (weak weed competition). In the following year, soluble solids content values were determined as 13.13±0.23% in strong weed competition and 13.83±0.21% in weak weed competition. Weak weed competition showed superiority for fruit weight and potassium+magnesium/calcium ratio. As a whole, this study indicates that insufficient weed control in tree rows might be a limiting factor for fruit quality in high-density apple orchards.


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