Year: 2018
Type: conference-paper
Abstract: Introduction:Strawberry is a popular fruit with high visual appeal and a desirable taste [1] .that is also rich in vitamins, anthocyanins, flavonoids, and polyphenolics [2,3] .In China, the strawberry harvest season ranges from October to May.Normally, a cultivar that produced fruit before the Spring Festival is called "winter strawberry", while one that produces fruit after the Spring Festival is called "spring strawberry".As fewer fruit are produced in winter, the "winter strawberry" is gaining attention from farmers because of its higher economic value.Cultivars that are available earlier in the season result in higher earnings for the farmers.Farmers, therefore, use cultivation techniques to regulate strawberry flowering time and harvest date, including the use of earlier plantings or daughter plants stored at low temperatures.Cultivation techniques aside, the development and ripening of strawberry fruit are also regulated by plant hormones [4] .Abscisic acid (ABA) is an important phytohormone that is the main regulator of strawberry fruit ripening [5,6] .ABA application is a potential method for regulating strawberry ripening.The length of fruit growth time is, however, closely related to fruit quality.This directly influences the commercial value of strawberry.It is not currently known whether the shortened growth period affects strawberry fruit quality.Previous studies have shown that exogenous ABA application significantly increased the in vitro anthocyanin content of strawberry [7] , but other quality parameters such as weight, soluble solids have not been studied.Therefore, the objective of this study was to investigate the effect of the timing and concentration of ABA application on strawberry fruit ripening.Moreover, the ripening-related quality of strawberry fruit were also investigated and may provide useful information about when and how to apply ABA during strawberry ripening in the field. MATERIALS AND METHODSPlant materials and ABA treatment Strawberry (Fragaria ananassa 'Benihoppe') plants were grown in soil in a plastic greenhouse under natural culture conditions during the winter season in Ya'an, China.About 850 secondary flowers on 200 strawberry plants were tagged at flowering.Only targeted fruit were sprayed with S-ABA at five different concentrations (20, 25, 30, 35 or 40 mg/L), or with water as the control until run off, at the de-greening (DG, 18 d after anthesis), white (W, 21 d after anthesis), and initial red (IR, 23 d after anthesis) stages.A randomized complete block design was adopted with three replicates.Fifteen fruits were sampled per experimental treatment.To avoid the non-targeted fruit were sprayed, a very small hand-held sprayer was used.The number of full red strawberries was recorded at 4-d intervals from the beginning of treatment, and full red fruit were harvested for fruit analyses.
Authors: Fan Mo, Cong Ge, Yanling Li, Hao-Ru Tang, Qing Chen, Bo Sun, Yong Zhang, Ya Luo
Institution: Sichuan Agricultural University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W2912438657