SELECTION-GENE-FREE TRANSGENIC PLANTS

摘要

Methods and materials for producing transgenic plants which are transgenic only with respect to foreign genes whose inclusion is desired, free of genes which confer selection characteristics. Advantage is taken of systems which mark DNA for excision in combination with enzymes mediating the excision to segregate selectable genes from desired transfer genes. In particular, the cre/lox system of bacteriophage P1 is used as an illustration of this method.