Salman, I.A. and Hamad, S.F. 2026. Effect of Plant Growth Regulators on Callus Coloration and Glycosides Accumulation in Tulipa gesneriana Tissue Culture. Ibn AL-Haitham Journal For Pure and Applied Sciences. 39, 2 (Apr. 2026), 41–50. DOI:https://doi.org/10.30526/39.2.4307.