The Effect of Production Systems on Strawberry Quality

Abstract

Strawberry with high polyphenols is receiving much more attentions recently. Production systems were reported positive effect on improving crop quality. A complete randomized design with two replicates was employed, and the strawberry selection 'SJ8976-1' was planted under three production systems: matted row system (MRS), plastic mulch (PM) and plastic mulch with row covers (PMRC). Total yield, average fruit weight, soluble solids content (SSC), titratable acidity (TA), firmness, fruit postharvest quality, total phenolic content (TPC), total antioxidant content (TAC), oxygen radical absorbance capacity (ORAC) and phenolic composition analysed by high-performance liquid chromatography (HPLC) were evaluated at different harvest times. The results showed that PMRC advanced fruit maturity and improved average fruit weight compared to MRS. SSC, TA and firmness of the strawberry fruits from PMRC were significantly increased at all harvests. Fruit weight loss, juice leakage and presences of grey mould were lower, and fruit glossiness was higher for those harvested under PMRC than those from MRS. TPC, TAC and ORAC of strawberry were significantly changed under different production systems. The phenolic compounds assessed in strawberry were grouped into six major categories, which were anthocyanins, kaempferol, flavonols, hydroxycinnamic acids, ellagic acid and benzoic acids.

Sugar content analysis of three strawberry cultivars applying two different cultivation methods

“…The amount of the investigated sugars varied according to cultivar, harvest time and cultivation technology, which glucose, fructose and sucrose, the amount of which varied according to the investigated varieties, the sugar content of consistency can be observed in the sugar content of the dif- (Mahmood et al, 2012;Fan et al, 2017;Lee et al, 2018;Aksic et al, 2019). Furthermore, it was reported by Basson et al ( 2010) that in the case of the cultivars 'Festival' and 'Ventana' the level of the sucrose and the fructose is the same but the level of the glucose is less.…”

“…In the case of high tunnels many factors can be under control such as temperature, amount of water. This is of these reasons plastic mulch (PM) and with black plastic last few years (Freeman and Gnayem, 2005;Fan et al, 2017).…”