The greatest failure rate of reforestation programs is basically related to water deficit, especially at the seedling stage. Therefore, main objective this work investigate responses three accessions carob trees (Ceratonia siliqua L.) with 2-year-old from different climate regions drought generated by four treatments: Tc (250 mm), T1 (180 T2 (100 and T3 (50 mm). first accession (A1) comes prote...