Dihaploid plants of roses (Rosa x hybrida, cv 'Sonia') obtained by parthenogenesis induced using irradiated pollen and in vitro culture of immature seeds J. Meynet, R. Barrade, A. Duclos and R. SiadousAgronomie, 14 3 (1994) 169-175DOI: https://doi.org/10.1051/agro:19940303