Carbohydrate reserves on postharvest of lisianthus cut flowers

Abstract

Floriculture industry demands for products with high quality and durability; however, there is a lack of studies related to the postharvest physiology of cut flowers. We aimed to study phenolic contents of lisianthus (Eustoma grandiflorum) stems treated with ethylene inhibitors (1-Methylcyclopropene - 1-MCP and Salicylic Acid - SA) and different storage temperatures (room at 24 ± 2 °C and pre-exposure to the cold chamber at 9 ± 2 °C for 24 hours) during the post-harvest. Total soluble carbohydrate contents decreased during the experimentation, characterizing the consumption of the reserves during lisianthus post-harvest. The 1-MCP treatment slowed the decrease of total soluble carbohydrate contents. SA treatment had the lowest total soluble carbohydrate contents in both storage temperatures

Effects of Postharvest Treatments with Nanosilver on Senescence of Cut Lisianthus (Eustoma grandiflorum (Raf.) Shinn.) Flowers

“…Glucose, fructose, and sucrose were identified as endogenous carbohydrates in lisianthus petals and they accumulated in petals of flowers standing in the sugar-containing solution while decreased in flowers kept in water. Such a reduction in total soluble sugars in lisianthus flowers-regardless of the postharvest treatments and temperatures-were reported by Cavasini et al [18]. Apart from the above listed sugars, myo-inositol and D-bornesitol were found in petals by Norikoshi et al [35], but glucose and fructose were the major carbohydrates in petals.…”

“…Ethylene is involved in the flower senescence of lisianthus [17]. Treatments with inhibitors of the ethylene action such as silver thiosulphate (STS) [17], 1-methylcyclopropene (1-MCP), or salicylic acid (SA) [18] extended flower longevity. A positive effect of acetaldehyde on decreasing ethylene synthesis and extending lisianthus longevity was reported by Seighalani et al [19], and that of silver nanoparticles by Kiamohammadi [14].…”

Promotion of flower opening in cut rose cultivars by 1-naphthaleneacetic acid treatment

“…Several studies have shown importance of sugar in flower opening and its vase life (Dung et al, 2017;Cavasini et al, 2018;Gómez-Merino et al, 2020). The accumulation of sugars in petal cells decreases the water potential, thus promoting water influx, which likely leads to cell enlargement and flower opening (Van Doorn and Kamdee, 2014).…”

Resistance Elicitors on Production and Post-Production Performance of Potted Lisianthus

“…Lisianthus is grown as a cut flower in soil, or as a potted plant (ÖZKAN;ÖZEN, 2016). The cultivars 'Echo' and 'Mariachi' are preferred by the Brazilian market, with folded flowers being the most commercialized, mainly those of white and white with blue edges colors (CAVASINI et al, 2018), which are grown mainly as cut flowers (AHMAD et al, 2017).…”

“…Over time, strategies have been used to extend the life of cut lisianthus through floral preservatives and ethylene action inhibitors (NOORDERGRAAF, 1994;SHEIKH et al, 2014;SAEEDI et al, 2015;CAVASINI et al, 2018). However, considering the cultivation of potted flowers, sustainable strategies that are safe for the producer and the consumer must be explored, such as those involving induced resistance in plants (ROMANAZZI et al, 2016;LÓPEZ-GUERRERO et al 2019;AHMED et al, 2020), not yet studied in potted lisianthus.…”