PCT No. PCT/EP94/01560 Sec. 371 Date Jan. 16, 1996 Sec. 102(e) Date Jan. 16, 1996 PCT Filed May 11, 1994 PCT Pub. No. WO94/26913 PCT Pub. Date Nov. 24, 1994A method to select and identify transformed plant cells by expressing a chimeric gene encoding an aminoglycoside-6'-N-acetyltransferase in the plant cells in the presence of an aminoglycoside antibiotic.