Determination of Characteristics of Grape Berry Skin in Some Table Grape Cultivars (V. vinifera L.)

2004 ◽  
Vol 3 (2) ◽  
pp. 141-146 ◽  
Author(s):  
Demir Kok . ◽  
Salih Celik .
Keyword(s):  
Grape Berry ◽  
Table Grape ◽  
Berry Skin ◽  
Grape Cultivars

scholarly journals Use of image analysis for the study of phenolic compounds of the grape berry skin (Vitis vinifera L., cv Cabernet franc)

OENO One ◽  
2003 ◽  
Vol 37 (1) ◽  
pp. 61
Author(s):  
Michel Chevalier ◽  
Emilie Perrochon ◽  
A. Clement ◽  
Anne-Laure Dubot ◽  
Marie Tellier ◽  
...  
Keyword(s):  
Image Analysis ◽  
Phenolic Compounds ◽  
Grape Berry ◽  
Berry Skin ◽  
Good Tool ◽  
Histological Techniques ◽  
Berry Skins ◽  
Quantitative Results ◽  
Scion Image

<p style="text-align: justify;">The localization and quantitative determination of phenolics in grape berry skins, from the onset of veraison, constitute the first step to understand the évolution of these compounds throughout the maturation process. Histological techniques are appropriate to study the evolution of phenolics but manual countings are long and drudgery and do not allow for reliable quantitative results. The image analysis software "Scion Image" proved to be a good tool to improve the quantitative results. This method permitted also to measure the cells area and the area occupied by phenolic compounds inside the vacuoles. Image analysis could be helpful to the understanding of the évolution of phenolics during maturation and possibly contribute to explain their extraction during macération.</p>

scholarly journals Quality Changes in Grape Berry as Affected by the Use of Different Colored Shade Nets Proposed to Alleviate the Adverse Effects of Climate Change

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Ali Sabir ◽  
Ferhan Sabir ◽  
Akram Ibrahim Mohammed Jawshle
Keyword(s):  
Skin Color ◽  
Grape Juice ◽  
Grape Berry ◽  
Table Grape ◽  
Berry Skin ◽  
Significant Development ◽  
Grape Berries ◽  
Essential Function ◽  
Black Plastic ◽  
Table Grape Cultivar

In Turkey, viticulture practices have displayed significant development with the production of high quality fresh grapes, juice, molasses and raisin. Grape berries contain high amount of phenolic compounds collected enormous interest due to their essential function in the improvement of produces attained from grapes, but also for their potential useful health effects as functional food. The purpose of present investigation was to reveal the effects of different colored shade nets on berry skin color and functional properties of grape juice. Four years old vines of ‘Alphonse Lavallée’ table grape were cultivated soilless in about 70 L black plastic pots containing sterile peat and perlite mixture under controlled glasshouse condition. The grapevines were covered with different colored shading nets (yellow, blue, white, red, green and black) at the beginning of the summer period. At commercial maturity, investigations show that berry skin color and the analyzed biochemical features of ‘Alphonse Lavallée’ table grape cultivar displayed great variations in response to the different colored shade net. Such differential effects should be evaluated when the use of shade nets is considered in protected viticulture to cope with environmental constraints. The findings may also be useful for the future experiments under conventional vineyard conditions.

scholarly journals Genetic diversity of table grape based on morphoagronomic traits

2011 ◽  
Vol 68 (1) ◽  
pp. 42-49 ◽  
Author(s):  
Patrícia Coelho de Souza Leão ◽  
Cosme Damião Cruz ◽  
Sérgio Yoshimitsu Motoike
Keyword(s):  
Genetic Diversity ◽  
Clustering Analysis ◽  
Germplasm Collection ◽  
Table Grape ◽  
Cluster Method ◽  
Breeding Programs ◽  
Method Analysis ◽  
Vitis Spp ◽  
Grape Cultivars

The conservation and characterization of grape (Vitis spp) genetic resources in germplasm banks have been the basis of its use in breeding programs that result in development of new cultivars. There are at least 10,000 grape cultivars kept in germplasm collection. The genetic diversity in 136 table grape accessions from the state of Bahia, Brazil, was evaluated. Continuous and discrete morphoagronomic traits were assessed. The clustering analysis by the Tocher otimization method resulted in 30 clusters (considering continuous morphoagronomic traits), and 9 clusters (taking into consideration multicategorical traits). There was no agreement between clusters obtained by both, continuous or discrete phenotypic descriptors, independent of the cluster method analysis used. A satisfactory genetic variability among the table grape accessions was observed.

scholarly journals Characterization of the ABA Receptor VlPYL1 That Regulates Anthocyanin Accumulation in Grape Berry Skin

2018 ◽  
Vol 9 ◽  
Author(s):  
Zhen Gao ◽  
Qin Li ◽  
Jing Li ◽  
Yujin Chen ◽  
Meng Luo ◽  
...  
Keyword(s):  
Grape Berry ◽  
Anthocyanin Accumulation ◽  
Berry Skin ◽  
Aba Receptor

scholarly journals Physical, Chemical-physical and chemical characterization of must and integral juice in grape cultivars

2017 ◽  
Vol 10 (3) ◽  
pp. 1 ◽  
Author(s):  
I. T. S. Viana ◽  
G. V. A. Fonseca ◽  
G. H. Bueno ◽  
J. O. F. Melo
Keyword(s):  
Chemical Characterization ◽  
Grape Juice ◽  
Titratable Acidity ◽  
Mineral Elements ◽  
Flame Emission ◽  
Level Of Significance ◽  
Physical And Chemical ◽  
Grape Cultivars

In recent years there has been an important increase in the production of grape derivatives such as integral grape juice. Thus, it was intended with the accomplishment of this study to evaluate the composition of the grape juice of the grape cultivars: Bordô, Concord e Isabel in the composition of integral grape juice from the Bento Gonçalves-RS. The samples were evaluated for classical analysis:°Brix, pH, titratable acidity, ratio Brix / titratable acidity made through methods, physics, physical chemistry and chemistry. The mineral elements sodium and potassium analyzed by flame emission and color intensity by colorimetry. For the statistical analysis of the data, the Tukey test was applied at the 5% level of significance. The contents of integral grape juice evaluated, SS, A Tand minerals presented according to the legislation, the pH was within the comparative average with other works. The determination of the color demonstrated the need to make cuts.

scholarly journals Brassinosteroids and gibberellic acid: effects on in vitro pollen germination in grapevine

OENO One ◽  
2017 ◽  
Vol 51 (3) ◽  
pp. 303
Author(s):  
Zeliha Gokbayrak ◽  
Hakan Engin
Keyword(s):  
Gibberellic Acid ◽  
Growth And Development ◽  
Pollen Germination ◽  
Table Grape ◽  
Basic Medium ◽  
Control Group ◽  
Plant Growth And Development ◽  
Physiological Processes ◽  
Grape Cultivars

<p style="text-align: justify;">Many physiological processes related to plant growth and development are under the influence of growth regulators, which also have an impact on pollen germination. In this study, the effects of two brassinosteroid compounds, epibrassinolide and 22S,23S-homobrassinolide, and gibberellic acid (GA<sub>3</sub>) on <em>in vitro</em> pollen germination of two table grape cultivars, ‘Italia’ and ‘Cardinal’ (<em>Vitis vinifera</em> L.), were determined. A total of 28 treatments, alone and in combination, were applied to freshly collected pollens which were sown on a basic medium with 1% agar and 20% sucrose. Petri dishes were kept at 26±1°C for 24 hours. Counting of the germinated pollens revealed that the effects of these plant hormones were cultivar- and substance-specific. The cultivar ‘Italia’ was not influenced by the treatments (the highest germination ratio being 44.4% from 0.001 mg L<sup>-1</sup> epibrassinolide) as opposed to the cultivar ‘Cardinal’. The highest germination ratio in ‘Cardinal’ was about 50% in pollens treated with 25 mg L<sup>-1</sup> GA<sub>3</sub> + 0.01 mg L<sup>-1</sup> epibrassinolide. The control group resulted in 32.38% germination. Combining GA<sub>3</sub> with epibrassinolide provided slightly higher germination ratios compared to combining GA<sub>3</sub> with 22S,23S-homobrassinolide. </p>

The use of vineyard spectral signatures to identify table grape cultivars

2021 ◽  
pp. 197-204
Author(s):  
R. Di Lorenzo ◽  
T. Santangelo ◽  
P. Scafidi ◽  
A. Pisciotta
Keyword(s):  
Table Grape ◽  
Spectral Signatures ◽  
Grape Cultivars
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