Quality attributes of pistachio nuts as affectedby rootstock and deficit irrigation

Abstract

BACKGROUND: In this work, the influence of two regulated deficit irrigation (RDI) treatments and three different rootstocks onthe quality of pistachios was evaluated by analyzing different parameters: morphological analysis, physicochemical analysisand sensory analysis.RESULTS: The results obtained in terms of the choice of rootstock revealed that Pistacia atlantica had increased production yields,nut weight, mineral content, higher intensities of characteristic sensory attributes and a higher degree of consumer satisfaction,than the other rootstocks studied. Moreover, the results established that the application of RDI on pistachio cultivation had nosignificant influence on production yield, weight, size, colour, water activity or mineral composition. Furthermore, T1 treatment(stem water potential < −1.3 MPa) resulted in higher intensities of characteristic sensory attributes and a greater level ofsatisfaction among international consumers.CONCLUSION: These results confirm that the application of deficit irrigation (T1) contributes to an increase in overall productquality. Furthermore, Pistacia atlantica rootstock provided better yield and quality than the other rootstocks studied.