Nonzygotic Embryogenesis in Passiflora maliformis

• Autores: Bernal Moreno, Sandra Carolina, Duarte Rodríguez, Lyda Catherine, Bohórquez Quintero, María de los Angeles, Araque, Eyda Johanna, Pacheco, José Constantino
• Formato: artículo
• Fecha de Publicación: 2018
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/15211
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/rpb/article/view/15211
• Nivel de acceso: acceso abierto
• Materia: Embriogénesis somática; In vitro; morfogénesis; regenerantes somáticos; pasifloras.; Somatic embryogenesis; morphogenesis; somatic regenerants; passion fruit.

The economic, ecological and medical significance of passion fruits has encouraged the development of multidisciplinary research in this group. In vitro culture, non-zygotic embryogenesis represents an alternative for plant regeneration; however, this technique has presented difficulties in the reproducibility of protocols as well as the development of certain embryos and abnormal plantlets in some species. We assessed in Passiflora maliformis L the morphogenic capacity in the mature zygotic embryos (MZE) to develop non-zygotic embryos (NZE), and subsequent plantlets regeneration. We tested an induction stage with 12 treatments in MS + VitB5 medium supplemented with 2,4-D, KIN and BA added alone or combined and, another with a MS, MS with Activated Charcoal (AC) or MS with growth regulators (GR) in 1/10 concentrations reduced to 1/10 of those added in the induction stage. We obtained high percentages, 70%, of regenerants in the medium supplemented with 1 mgL-1 BA and transferred to the MS expression medium, as well as in the medium with 1 mgL-1 BA + 3 mgL-1 2,4-D, and transferred to the expression medium with AC, 60%. 70% of the regenerated seedlings were successfully grown in the greenhouse. This is the first research that addresses the expression of the MZE embryogenic potential in P. maliformis, inducing a successfully embryogenic non-zygotic responses through direct and indirect routes; the obtained results are relevant to the knowledge of non-zygotic embryogenesis in other passion fruits, for breeding and commercial uses.