Systems are required which allow selection of transformed cells. Genes that confer a selectable advantage to transformed cells are included in the transformation system. They include the use of antibiotics, herbicides or other compounds. In this review, we describe the systems developed for selective elimination of selectable marker genes from the transgenic plants.
P. Lehmann, Pracownia Inzynierii Genetycznej Roslin, Instytut Genetyki Roslin, Polska Akademia Nauk, ul. Strzeszynska 34, 60-479 Poznan, Poland, e-mail: pleh@igr.poznan.pl