Effect of putrescine and deficit fertigation on yield and some quality parameters of strawberry fruits (Fragaria × ananassa cv. Sabrina) under hydroponic conditions

Nowadays, for environmental concerns and to ensure the health and safety of the consumers, it is necessary to use safe compounds in food production systems. However, for water shortage and arid environmental conditions it is necessary to decrease water use. In this study, the effect of foliar application of putrescine at 0 and 2 mM and nutrient solutions of 140, 180 and 220 ml /day on Sabrina strawberry fruit quality and yield under hydroponic conditions was investigated. The highest total soluble solids, total phenolics and total antioxidant activity was recorded 2 mM putrescine with 140 ml nutrient solution per day and the highest values for fruit overall quality yield were recorded in plants treated with 2 mM putrescine under 180 ml nutrient solution per day. However, the highest titratable acidity was obtained in the control fruit (220 ml/day). The results of this study indicate that putrescine application is effective in enhancing strawberry fruit quality and yield parameters under deficit fertigation conditions.