Bromodeoxyuridine combined with UV light and gamma irradiation promotes the production of asymmetric somatic hybrid calli

adn antibiotics antibiotique cal callo callus cell culture chromosome chromosomes cromosomas cultivation cultivo culture de cellule culture media dna enzimas enzyme enzymes exposition fisiologia vegetal fitomejoramiento fusion de protoplastes gamma radiation gene genes hybride somatique kanamicina kanamycin kanamycine medio de cultivo milieu de culture mutation nicotiana tabacum plant breeding plant physiology pratique culturale protoplast fusion protoplaste protoplastos protoplasts rayonnement gamma rayonnement ultraviolet resistance to chemicals somatic hybrids ultraviolet radiation