The effect of original compounds 3-DEC (diethylammonio chloride derivative) and 17-DMC (dimethylmorpholinio chloride derivative) on stem growth structure and productivity of winter oilseed rape ‘Kasimir F1’, and on phytohormone content in stem tissues was studied. It was determined that the processes of growth and morphogenesis of rape plants could be controlled applying compounds 3-DEC and 17-DMC of quaternary ammonium salts, which, acting on the phytohormone balance, inhibit the linear growth of stems, induce the formation of mechanical tissues in lower layers of stem. When the optimum structure of stem is formed, the resistance of rape stems to lodging increases, the formation of productivity elements activates, thus stable and high quality yield is obtained.
Keywords: winter oilseed rape, spring oilseed turnip, 3-DEC, 17-DMC, phytohormones.