A changing station for sleeves of a printing machine has a conveyable magazine with at least one take-up device for the sleeves. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The invention also relates to methods for producing a citrus plant CALLOR1 containing in its genetic material one or more transgenes and to the transgenic citrus plants and plant parts produced by those methods.