The success of genetic engineering in orchids, as for other plants, depends on the totipotency of plant cells, i.e. the inherent ability of plant tissue to produce cells that can be regenerated into a completely viable plant (Teixeira da Silva, 2010). The use of genetic engineering to incorporate useful genes into elite breeding lines depends on the development of suitable tissue culture techniques to generate organogenic or embryogenic cells, and of protocols for the delivery of transgenes into competent cells with a suitable selection system (Harfouche et al., 2010). Successful establishment of these systems enables the production of stably transformed transgenic plants