TRAYKOV , Velichko; HRISTOVA-CHERBADZHI, Miroslava. Heterosis breeding in sunflower. Manifestation of heterosis in the traits yield and weight of 1000 seeds. Bulgarian Journal of Crop Science, Sofia, BG, v. 63, n. 5, p. 38–51, 2026. DOI: 10.61308/JNSC4954. Disponível em: https://agriacad.eu/ojs/index.php/bjcs/article/view/7358.. Acesso em: 4 nov. 2026.