The invention relates to a hybridization oven or incubator, and more particularly to a rotisserie and carousel/retainer system for use therein. The rotisserie includes a spindle that is readily removable from the oven, having a first end received in an annular bracket and a second end received annular bracket with an upper slot for passage of the spindle into the bracket. The carousel clip system includes a thin metal carousel plate preferably formed of a stainless steel and having a plurality of ears bent perpendicular to the carousel plate and having a detent aperture therein. A plurality of bottle retainers are removably attached to the carousel plate, the retainers having a base channel adapted to receive the ears of the carousel plate and further including a resilient arm having a detent projecting into the channel and deflectable during insertion of the ear into the channel, the detent entering the detent aperture of the ear under the bias of the resilient arm to removably retain the clip on the ear of the carousel plate.