Effect of prohexadione-Ca on leaf chlorophyll content, gas exchange, berry size and composition, wine quality and disease susceptibility in Vitis vinifera L. cv Xinomavro

Thomidis, T.; Zioziou, Eleftheria; Koundouras, Stéfanos; Navrozidis, Ioannis; Νικολάου, Νικόλαος

doi:10.1016/j.scienta.2018.05.008

Cited by 7 publications

(6 citation statements)

References 20 publications

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“…Grape is calciphilous plant, calcium is not only a cell wall component of grape tissue cells but also a major regulator of grape metabolism and development [31]. It has a remarkable impact on the yield and properties of grapes.…”

Section: Discussionmentioning

confidence: 99%

Influence of the application of irrigated water-soluble calcium fertilizer on wine grape properties

Wang

et al. 2019

PLoS ONE

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The eastern foot of Helan mountain is a famous production area of high-end wine grapes in China. Excessive application of NPK fertilizer induced deficiency in trace elements, such as calcium, and seriously affected the properties of wine grapes. A vineyard in the eastern foot of Helan mountain was selected to investigate the influence of five different concentration treatments of 15 (T 1 ), 30 (T 2 ), 45 (T 3 ), 60 (T 4 ), and 75 (T 5 ) kg·ha -1 of water-soluble calcium fertilizer (Ca(NO 3 ) 2 ·4H 2 O) application on grape calcium content, yield and fruit properties. The application of calcium fertilizer significantly increased the calcium content in leaves but reduced that in stems and fruits. The highest grape production of 6560.83 kg·ha -1 was achieved at T 5 calcium fertilizer application, corresponding to increase of 30.92% than that for the control (CK, normal fertilization) treatment. The minimum titratable acid of 4.63 g·L -1 in grapes was detected at T 2 calcium fertilizer application, which was 16.38% lower than CK, however, 13.40% increase in sugar-to-acid ratio was observed at T 2 . At 45 kg·ha -1 calcium fertilizer concentration, the anthocyanins content was 6.47 mg·L -1 , indicating an increase of 53.23% than CK. This study showed that the optimal calcium fertilizer concentration was 30 kg·ha -1 with the lowest °Brix, titratable acidity, anthocyanins, the highest total phenols, reducing sugar, sugar-to-acid ratio, and an acceptable concentration of the soluble sugar and tannins.

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Section: Discussionmentioning

confidence: 99%

Influence of the application of irrigated water-soluble calcium fertilizer on wine grape properties

Wang

et al. 2019

PLoS ONE

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“…Calcium affects the cell division of fruit, maintains the permeability and integrity of cells, and has a substantial impact on grape physiology and quality. It is an essential nutrient element in the growth and development of grapes and a major regulator of grapevine metabolism and development [24][25][26][27] . Therefore, calcium supplementation is an important measure to improve fruit quality [28] .…”

Section: Effects Of Calcium Application On the Yield And Quality Of W...mentioning

confidence: 99%

Foliar application of chelated sugar alcohol calcium fertilizer for regulating the growth and quality of wine grapes

Ma,

Hui,

Zhang

et al. 2022

International Journal of Agricultural and Biological Engineering

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The eastern foothills of Helan Mountain are a production area of high-quality wine grapes, but the low content of water-soluble calcium in the alkaline soil in this area has become an important limiting factor for the production of high-end wines. In this study, 7-year-old Cabernet Sauvignon grapes grown at Lilan Winery, which is located at the eastern foot of Helan Mountain in Ningxia, China, were used to examine the effect of exogenous calcium supplementation on fruit growth and berry quality. Calcium sugar alcohol was applied as a foliar spray at 1.2 L/hm 2 (T1), 2.4 L/hm 2 (T2), 3.6 L/hm 2 (T3), 4.8 L/hm 2 (T4), and 6.0 L/hm 2 (T5) concentrations at the fruit expansion stage, the early stage of grape veraison, the middle stage of grape veraison, and the later stage of grape veraison. Water control was used for comparison. The results showed that foliar calcium supplementation can significantly enhance the photosynthetic characteristics of wine grape leaves, increase the chlorophyll content of leaves, and improve the quality of grape berries. Under the T3 (3.6 L/hm 2 ) concentration of exogenous calcium, the transverse diameter, the longitudinal diameter, and fruit shape index of grapes were the highest, which were increased by 1.71%, 5.33%, and 3.92% compared to the control, respectively. The application of high calcium concentrations (T4 and T5) inhibited the physiological development of grapes. The spike length, hundred-grain weight, yield of wine grapes, sugar-acid ratio, tannin, and total phenols were the highest in the T2 (2.4 L/hm 2 ) treatment. The results of principal component analysis based on multiple indicators showed that foliar application of 2.4-3.6 L/hm 2 chelated sugar alcohol calcium on the leaf surfaces of grape leaves was the most suitable for improving the physiological characteristics and berry quality of wine grapes.

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“…For this purpose, a fully expanded‐leaf disc of 1 cm 2 (representative of each plant) was placed in a 15 mL conical glass tube with 2 mL of LGH freshly prepared, covered with the painted aluminum foil, and then placed in the focal point of the solar concentrator for 60 min. The proposed methodology was contrasted with the ethanolic extraction technique [54] after incubation in 2 mL 50 % ethanol at 65 °C in a water bath for 60 min. Then, the extracts from both techniques were transferred to cuvettes and the corresponding fluorescence measured.…”

Section: Resultsmentioning

confidence: 99%

On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

et al. 2022

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Natural Deep Eutectic Solvents (NADES) are currently one of the greenest solvents for both academic and industrial purposes. Despite their advantages with respect to traditional solvents, their synthesis typically requires access to power, limiting their applicability to address problems in remote locations. Addressing this shortcoming, this report describes the possibility to use a 3D‐printed solar concentrator for the on‐site preparation of NADES, approach that not only provides a simple way to adjust synthetic conditions but also represents the greenest method for their synthesis reported to date. To highlight the advantages of the approach, the preparation of twelve representative NADES was performed and benchmarked against one of the most traditional methods, involving heating and stirring. According to our results, most of the NADES tested could be prepared on‐site in <40 min and with minimal hardware requirements. Additionally, the NADES prepared were used for the extraction of chlorophyll from Vitis vinifera leaves, prior to its quantification using a smartphone and a 3D printed fluorometer. The greenness of the proposed method (calculated using the AGREE software) rendered a score of 0.86, the best reported to date.

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Effect of prohexadione-Ca on leaf chlorophyll content, gas exchange, berry size and composition, wine quality and disease susceptibility in Vitis vinifera L. cv Xinomavro

Cited by 7 publications

References 20 publications

Influence of the application of irrigated water-soluble calcium fertilizer on wine grape properties

Influence of the application of irrigated water-soluble calcium fertilizer on wine grape properties

Foliar application of chelated sugar alcohol calcium fertilizer for regulating the growth and quality of wine grapes

On‐Site Preparation of Natural Deep Eutectic Solvents Using Solar Energy

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