Micropropagation is an effective way to preserve the gene pool of threatened plants. This study devoted mathematical modeling nutrient media and effect mT (meta-topoline) on multiplication shoots Hedysarum grandiflorum, Hyssopus cretaceus, Matthiola fragrans in vitro comparison with benzylaminopurine (BAP) kinetin (KT). Initiation was performed MS medium 0.5 mg/L BAP. For multiplication, MS, B5...