TY JOUR TI OPTIMIZATION OF MEDIUM COMPOSITION NUTRIENT AND CULTIVATION CONDITIONS FOR IN VITRO MICROPROPAGATION OF THYMUS SERPYLLUM L. AND THYMUS CAUCASICUS L. KW creeping thyme (Thymus serpullum L.) KW Caucasian thyme (Thymus caucasicus Willd.) KW clonal micropropagation KW in vitro KW growth regulators JO Vestnik of Kazan State Agrarian University AU Tevfik, A.S. AU Egorova, N.A. PY 2024 IS 19 PB Kazan state agrarian University