An image forming apparatus having a consumable detachably installed in the main body is disclosed. The system provides an underlying component architecture having an object-oriented database structure and a metadata database structure which stores only one instance of each object while linking the object to multiple collections and domains for grouping into and retrieval from any of the collections. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1V7K through backcross conversion andor transformation, and to the maize seed, plant and plant part produced thereby.