Productions of natural colorants and flavors via plant
tissue
culture, Evaluation and production of functional substances
through plant tissue culture, Micro-propagation of
medicinal
crops via bioreactor and plant tissue culture.

1974~1978 Assistant Professor, Technical Univ. of
Munich, Germany
1979~1988 Assistant & Associate Professor, Seoul
National Univ.
1980~1984 Co-Researcher, Institute of Agricultural
Sciences & Technology
1988~ Professor, Seoul National University
1990~1992 Co-Researcher, Crop Experimental Station
1992~ Specialist, Crop Experimental Station
1993~1995 Member of R & D Committee, Korea Science
&
Engineering Foundation
1993~1995 Member, Research Evaluation Committee,
Korea Research Foundation
1995~1997 Director, Agricultural Science &
Development,
Seoul National Univ.
1996~1998 Member, Research Evaluation Committee,
Ministry of Agriculture
1997~ Vice President, The Society for Advancement of
Breeding
Researches in Asia & Oceania
1999~2001 President, Korea Breeding Society