TY JOUR TI INHERITANCE AND GENETIC ANALYSIS OF GRAIN WEIGHT PER SPIKE IN BARLEY KW barley KW diallel analysis KW grain weight per spike KW genetic system KW combining ability KW heritability JO Vestnik of Kazan State Agrarian University AU Dolzhenko, D.O. AU Shevchenko, S.N. PY 2021 IS 16 PB Kazan state agrarian University