Evaluation of salinity tolerance in seedlings of Hyppeastrum reticulatum (L’Hér.) Herb.Khalaj, Mohammad Ali (Avtor) Azimi, Mohammad Hossein (Avtor) Sayyad-Amin, Pegah (Avtor) leafnitrogenphosphorouspotassiumprolineperoxidaseAmaryllis (Hyppeastrum Herb.)is one of the bulbous ornamental plants that is distributed around the world. Regarding the cultivation of ornamental plants in landscaping, it is essential to use salinity-resistant ornamental species. Less research has been done on the impact of salt irrigation on the growth and development of bulbous ornamental plants like this plant. So, in order to investigate salinity tolerance in amaryl-lis, the experiment was done with five salinity concentrations [control (distilled water) with EC = 0dSm-1, and electrical con-ductivity (EC) at 2, 4, 6 and 8 dSm-1] with four replication on leaf freshness, leaf length and width, proline, nitrogen (N), po-tassium (K), phosphorous (P) content, and peroxidase enzyme activity. Results showed that increasing salinity led to decreased leaf nutrients and growth parameters like plant height, shoot mass, leaf length, width, mass, and corm mass, and increased proline and peroxidase activity.20252025-07-14 15:18:11Članek v reviji170753sl