Ultrastructural characterization of maize (Zea mays L.) kernels exposed to high temperature during endosperm cell division

abortion aborto air temperature amidon avortement calor cell division chaleur conditionnement crecimiento croissance division cellulaire empaquetado endosperm endosperma endosperme etapas de desarrollo de la planta filling grain graine granos growth heat heat stress in vitro experimentation mais maize noyau cellulaire nucleo nucleus packaging plant developmental stages seeds semilla starch stress thermique temperatura del aire thermal stress ultraestructura ultrastructure zea mays