Effect of different levels of water deficiency on the tomato content of: Oxalic acid (A), tartaric acid (B), malic acid (C), shikimic acid (D), α-ketoglutaric acid (E), citric acid (F), succinic acid (G), ascorbic acid (H), and total amino acids (I). The data are presented as the mean ± SE of three biological replicates. Different lowercase letters indicate significant differences in Duncan’s multiple range tests (p < 0.05). Abbreviations: CK: The control with full irrigation of 90% the maximum field moisture capacity (FMC); T1: Substrate maintained at 80% maximum FMC; T2: Substrate maintained at 65% maximum FMC; T3: Substrate maintained at 55% maximum FMC; T4: Substrate maintained at 45% maximum FMC.