Fruit sphere microenvironments and berry phenolic content of Cabernet Sauvignon (Vitis vinifera L.) cultivated under rain-shelter systems with coloured plastic film

Abstract

Rain-shelter cultivation has been proven an important cultivation method for grape-plantings in continental monsoon climate zones, of which white plastic films are the most common shelter material. However, while this method and material reduces the occurrence of the disease, it can also decrease the grape berry quality. Five colours (including red, yellow, blue, purple, and white) of plastic films were covered above Cabernet Sauvignon (Vitis vinifera L.) grapevine rows before veraison. Rain-shelter cultivation reduced air temperature, wind speed, and total solar radiation and enhanced relative humidity in the fruit sphere of grapevines. For each particular colour plastic film, the irradiance of its corresponding spectrum band in the canopy of vines was higher than with other colour plastic films. Meanwhile, the blue plastic film treatment significantly promoted the accumulation of total phenolics, anthocyanins, flavonoids, tannins, and phenolic acids more than the other colours of plastic films. Blue plastic films are more beneficial for berry quality promotion of wine grapes, especially Cabernet Sauvignon, under rain-shelter cultivation in continental monsoon climate zones.

Melatonin treatment of pre-veraison grape berries modifies phenolic components and antioxidant activity of grapes and wine

“…Preparation and analysis of non-anthocyanin phenolic compounds in grape berries and wine was based on a previous method from Meng et al (2017). For non-anthocyanin phenolic compounds in grape skins, triplicate samples of the pulverized berry skins of each treatment (2.00 g dry weight) were exhaustively extracted four times with 5 mL of distilled water and 45 mL of ethyl acetate in an orbital shaker (SHZ-88A, Taicang Experiment Equipment Factory, Jiangsu, China) for 30 min at 20 °C to avoid thermal degradation.…”

Evaluation of the potential astringency of the skins and seeds of different grape varieties based on polyphenol/protein binding

“…The quality of grape is paramount as it is the material for wine-making. Nevertheless, the quality of grapes and wines is influenced by many factors (region, climate, cultivation, and grape variety) (De Pascali et al, 2014;Pantelić et al, 2016), and irrespective of the type vinification, the grape variety ultimately determines the quality of the wine (Meng et al, 2017). This is primarily due to the phenolic compounds in the grape skins and seeds.…”

Comparative transcriptome profiling analysis provides insight into the mechanisms for sugar change in Chinese jujube (Ziziphus jujuba Mill.) under rain‐proof cultivation

“…The sugar contents of most fruit species grown under RP cultivation are significantly higher than those of fruits grown under OF cultivation (Huang et al, 2009;Tian et al, 2019). However, some studies have also reported the opposite trend (Meng et al, 2017). The Plant Genome…”

“…This system regulates the environment for plant growth, thereby improving the crop yield and quality. In the past two decades, rain‐proof cultivation has been increasingly used to cultivate fruit tree including but are not limit to apple, pear, and grape (Gao et al., 2016; Meng et al., 2017).…”