TY JOUR TI VARIETIES OF PEAS (PISUM SATIVUM L.) WITH SELECTIONALLY VALUABLE CHARACTERISTICS FOR USE IN BREEDING TO INCREASE PRODUCTIVITY AND PROTEIN CONTENT IN SEEDS KW pea (Pisum sativum L.) KW genetic resources KW varieties KW productivity KW protein content KW growing season JO Vestnik of Kazan State Agrarian University AU Shurhaeva, K.D. AU Fadeeva, A.N. PY 2021 IS 16 PB Kazan state agrarian University