TY JOUR TI Determination of the breeding value of sunflower varieties and hybrids with cluster and factor analyzes KW sunflower KW variety KW hybrid KW yield KW oil content KW unit KW mass of 1000 seeds KW coefficient of variation KW correlation coefficient KW cluster KW factor loading JO Agrarian Bulletin of the AU Gudova, L.A. AU Lekarev, A.. PY 2024 IS 24 PB Ural State Agrarian University