TY JOUR TI CHARACTERISTICS OF SPRING BREAD WHEAT LANDRACES ON PLANT PRODUCTIVITY ELEMENTS AND YIELD UNDER CONDITIONS OF WESTERN SIBERIA KW spring bread wheat KW landraces KW yield KW productivity elements KW cluster analysis JO Vestnik of Omsk SAU AU ESSE, S.A. AU POTOTSKAYA, I.V. AU GLADKIH, M.S. AU SHAMANIN, V.P. PY 2023 IS 51 PB FSBEI HE Omsk SAU