Thidiazuron-induced somatic embryogenesis in intact seedlings of peanut (Arachis hypogaea): Endogenous growth regulator levels and significance of cotyledons [phenylurea, N6-(2-iso-pentenyl)adenine]

aba acide abscissique arachis hypogaea auxinas auxine auxins citoquininas cotiledones cotyledons cultivo de tejidos culture de tissu culture media cytokinine cytokinins desarrollo embrionario embryon somatique embryonic development explant explantes explants medio de cultivo milieu de culture morphogenese morphogenesis multiplication des plantes plant propagation plantule seedlings somatic embryos tissue culture