E.N. Eremeeva - Student, State Agrarian University Moscow Agricultural Academy named after K.A. Timirjazev. E-mail: ascata@yandex.ru
L.E. Abramova - Student, State Agrarian University Moscow Agricultural Academy named after K.A. Timirjazev
E.L. Malankina - Dr.Sc. (Agricul.), Professor, Russian State Agrarian University Moscow Agricultural Academy named after K.A. Timirjazev