Boron’s Exogenous-Spraying and the Postharvest Quality of Perlette and Kings Ruby Cvs. Grapes by Enhancing the Gas Exchange, Antioxidants, and Total Sugars

Abstract

The impact of boron’s pre-harvest treatments on the quality of early grapes cultivars “Perlette” and “King’s Ruby” under room and storage temperatures were explored. The vines were exhibited to foliar applications with 0, 0.20, 0.30, and 0.40% boron at 15 d break after spraying fruit till maturity. Foliage studies for photosynthesis activity, pre- and post-harvest, and overall analysis of fruits were performed each 7d intervals for 4 wk. A 0.30% boron enhanced the vines’ physicochemical properties of the photosynthesis activity. Meanwhile, boron was used to improve ascorbic acid, which improved the postharvest properties of grapevine while decreasing the repulsive phenolic content. Grape cv. “Perlette” and “King’s Ruby” delivered 31.12 and 33.65 percent more than the control, respectively, at 0.30 percent of boron. TSS were about 8.9 and 13.7% in cvs at the same period. ‘Perlette’ and Kings Ruby, compared with the untreated treatment. Grapes treated with 0.30% yielded (18.08 and 32.18%) and (27.25 and 18.65%) higher overall phenolic content and antioxidants in cvs. ‘Perlette and’ King’s Ruby’ respectively. After 28 days, 0.30 percent of the foliar treatment loses 56.06 and 49.88 percent of the sugar in the grapes, respectively. Grapes from ‘Perlette’ and ‘King’s Ruby,’ individually. Thus, in comparable semi-arid regions, the use of boron foliar treatment might be advised for increasing the postharvest life of grapes.

Effect of Shoots and Clusters Density on Microclimatic Changes, Yield, and Fruit Quality of King Ruby Grapevines

“…It is also used to produce raisins, juices, drinks, jams, etc. Grapes are exceptionally digestible and have different medicinal properties (Kareem et al 2022). Globally, the grapevine is ranked fifth among the top produced fruits next to bananas, watermelons, apples, and oranges with a total worldwide production of more than 77 million tons (FAOSTAT, 2021).…”

Effect of Some Rootstocks on Vegetative Growth, Nutrient Content, Yield and Quality of Thompson Seedless Grapevines and H4 Strain under Conditions of Egyptian Delta Region

“…Grapes (Vitis vinifera, L.) are considered one of the most important and popular fruit crops in the world, especially in temperate, tropical, and subtropical regions. Grape berries have been used in multiple forms including edible fresh or dry berries, jam, juice, vinegar, seed oil, and wine (Kareem et al, 2022). In 2019, the global harvested area of grapevines was estimated at around 7 million ha, which produced around 77 million tons (FAOSTAT, 2021).…”