An ingestible capsule is provided for delivering medication to a subject. The device comprises an exhaust diverter and a hydrogen generation section. The rear prong can be moved away from the leading prong by a catching pawl for introducing a box into the opened holding unit, at an inlet station, and for removing the box in a discharge station, situated downstream. Methods are disclosed for transferring this system into any line of interest for use in hybrid seed production in Erysimum cheiri.