Genetical studies of nectar and pollen production in sunflower F. Vear, M. Pham-Delegue, D. Tourvieille de Labrouhe, R. Marilleau, Y. Loublier, M. le Métayer, P. Douault and JP PhilipponAgronomie, 10 3 (1990) 219-231DOI: https://doi.org/10.1051/agro:19900305