TY JOUR TI ALLELOPATHIC EFFECT OF CAFFEINE ON EARLY STAGES OF LINUM USITATISSIMUM L. ONTOGENESIS KW allelopathy KW caffeine KW sowing flax KW Linum usitatissimum L KW seeds viability KW sprouts de-velopment KW ontogenesis JO Bulletin of KSAU AU Gordeeva, I.V. PY 2017 IS PB Krasnoyarsk State Agrarian University