TY JOUR TI Adaptation of spring durum wheat varieties in the steppe zone of Akmola region KW spring durum wheat KW variety KW yield KW vegetation period KW yield structure elements KW preservation KW grain nature KW gluten KW vitreous KW weight of 1000 grains JO Agrarian Bulletin of the AU Syzdykova, G.T. AU Aydarbekova, T.Z. AU Gabdulina, A.I. AU Puchkova, S.Y. PY 2020 IS 192 PB Ural State Agrarian University