Cell and tissue culture in field crop improvement

anther culture arroz avenas avoine camellia sinensis cell culture citrus cultivo de anteras cultivo de tejidos cultivo in vitro culture de cellule culture de tissu culture in vitro desarrollo embrionario embryonic development fitomejoramiento in vitro culture nicotiana tabacum oats plant breeding protoplaste protoplastos protoplasts rice riz tissue culture zea mays