Anoud Tena(1) and Hassan Obead (1)
(1). Department of Horticultural Sciences, Faculty of Agricultural Engineering, Damascus University, Damascus, Syria.
(*Corresponding author: Anoud Tena, E-mail: anoudtena@gmail.com, phone: 0932128887)
Received: 8/01/2023 Accepted: 16/02/2023
Abstract:
The research was carried out in the farm of Abu Jarash in the Faculty of Agriculture – Damascus University, and the analyzes were conducted in the laboratories of the Faculty of Agriculture, and the National commission for Biotechnology (NCBT ) in Damascus. The cultivation was carried out for three consecutive seasons in December 2018-2019-2020, with the aim of studying the effect of foliar spraying with five concentrations of salicylic acid (0, 0.12, 0.25, 0.5, 1 mmol) its symbols SA0, SA1, SA2, SA3 and SA4, and three levels of irrigation (control, 75 and 50% of the field capacity) in the growth, development and productivity of two strawberry hybrids “Festival and Camarosa”. The results showed that water stress lead to a decline of physical parameters of fruit.The weight of fruit reached to 14.06 g under the irrigation level (75%), while it decreased to 10.45 g under 50% field capacity, as compared to the control (15.62 g). The percentage of decrease in fruit diameter was 46.74% in the treatment 50% as compared to the control. However, water stress improved the quality of the fruits by increasing the contents of soluble solids, vitamin C, carotenoids, and anthocyanins, while the total acidity decreased with reducing the amount of irrigation to 50% in the two hybrids, Festival and Camarosa. Spraying with salicylic acid also contributed to improving some quality characteristics of the fruits (contents of TSS, vitamin C, anthocyanins), at the same time reducing the content of total carotenoids in the fruits, while it did not affect the acidity of the fruits of the hybrid Festival, This makes the fruits taste tastier and increases their storage.
Keyword: Strawberry, irrigation Ievel, Salicylic Acid, Fruit Quality.
Full paper in Arabic: pdf