Studies on nuclear embryogenesis in citrus, 3: On the differences in ability to form embryoids in in vitro culture of ovules from poly- and mono-embryonic cultivars

animal developmental stages biological development citrus crops cultivar cultivars cultivo de embriones cultivo de tejidos cultivos desarrollo embrionario developmental stages dicotiledoneas dicotyledons economic plants embryo culture embryonic development essential oil crops etapas de desarrollo etapas de desarrollo de la planta etapas del desarrollo animal fisiologia fonction physiologique gametes gametos geraniales industrial crops methode methods multiplication des plantes ova ovule physiological functions physiologie physiology plant developmental stages plant propagation plantas plantas industriales plante plante de culture plante industrielle plants poliembrionia polyembryony reproduction rutaceae tissue culture vegetative propagation