TY JOUR TI USE OF SUCROSE AND MANNITOL FOR DIFFERENTIATION OF FLAX GENOTYPES BY RESISTANCE TO OSMOTIC STRESS KW flax (Linum usitatissimum L.) KW sucrose KW mannitol KW drought tolerance KW seeds KW hypocotyl segments KW immature embryos JO Vestnik of Kazan State Agrarian University AU Vinogradova, E.G. PY 2020 IS 15 PB Kazan state agrarian University