(19)

(11)

EP 0 604 543 A1

(12)

(43) Date of publication: 06.07.1994 Bulletin 1994/27 (21) Application number: 92920241.0 (22) Date of filing: 09.09.1992

(51) International Patent Classification (IPC):  A23K 1/ 00( . ) A23K 1/ 18( . ) C12N 1/ 20( . ) C12R 1/ 465( . ) A23K 1/ 16( . ) C12N 1/ 04( . ) C12R 1/ 01( . ) (86) International application number: PCT/US1992/007589 (87) International publication number: WO 1993/006208 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL SE (30) Priority: 20.09.1991 US 19910763175 (71) Applicant: PIONEER HI-BRED INTERNATIONAL, INC. Des Moines Iowa 50309 (US)	(72) Inventors: RUTHERFORD, William, M. Des Moines, IA 50310 (US) ALLEN, Jack, E. Grimes, IA 50111 (US) DENNIS, Scott, M. Des Moines, IA 50322 (US) HINDS, Mark, A. Minburn, IA 50167 (US) DANA, Gregory, R. West Des Moines, IA 50265 (US) (74) Representative: Thomson, Paul Anthony  Potts, Kerr & Co. 15, Hamilton Square Birkenhead Merseyside L41 6BR Birkenhead Merseyside L41 6BR (GB)