4/1992 to 3/1997

4/1992 to 4/1994

10/1988 to 3/1992

10/1985 to 9/1987

Since 4/2002

12/2001 to 3/2002

4/1999 to 11/2001

4/1997 to 3/1999

University of Hohenheim, Germany. Ph.D

Visiting scientist at the International Center for Wheat and Maize Breeding, CIMMYT, Mexico.

University of Hohenheim, Germany. Completion of the 'Dipl.-Ing.agr.' degree (equivalent to a M.Sc.).

University of Bonn, Germany.

Assistant Professor, Maize Breeding and Genetics, University of Illinois.

Privatdozent for Plant Breeding at the University of Hohenheim, Germany.

Assistant Professor ('Habilitant') at the Institute for Plant Breeding, Seed Science, and Population Genetics, University of Hohenheim, Germany.

 Postdoc at the Institute for Plant Breeding, Seed Science, and Population Genetics, University of Hohenheim, Gemany.