Khalaf, M.A. et al. 2026. POTENTIAL OF CHEMICAL ELICITORS TO ENHANCE PRODUCTION SECONDARY METABOLITES IN INDUCED CALLUS FROM HYOSCYAMUS NIGER LEAVES. IRAQI JOURNAL OF AGRICULTURAL SCIENCES. 57, 1 (Jan. 2026), 92–104. DOI:https://doi.org/10.36103/h8r61b57.