Long-term in vitro shoot-tip culture and plant regeneration in flax

auxinas auxine auxins bourgeon buds callogenese callogenesis cultivo de meristemas culture media cytokinine cytokinins enracinement enraizamiento explant explantes explants linum usitatissimum medio de cultivo meristem culture milieu de culture racine rooting roots seasonal variation stems tallo tige yema (planta)