Personal Data
| 1940 | Born in Israel. |
| 1973 | Ph.D., The Hebrew University of Jerusalem. |
| 1974-1976 |
Visiting Researcher, Department of Applied Genetics (with Professor D. R. Davies), John Innes Institute, Norwich, UK. British Council Scholarship. |
| 1975-2001 |
Invited Lecturer, International Course on Vegetable Growing Under Tropical and Subtropical Conditions, International Agricultural Center (IAC), Wageningen, The Netherlands. |
| 1976-1981 | Lecturer, Department of Field and Vegetable Crops, Faculty of Agriculture, The Hebrew University of Jerusalem. |
| 1981-1982 | Research Associate, Department of Biochemistry (with Professor I. Fridovich), Duke University, Durham, North Carolina, U.S.A. |
| 1982-1986 | Senior Lecturer, Department of Field and Vegetable Crops, Faculty of Agriculture, The Hebrew University of Jerusalem. |
| 1986-1991 | Associate Professor, Department of Field and Vegetable Crops, Faculty of Agriculture, The Hebrew University of Jerusalem. |
| 1986-1987 | Research Associate, Department of Biochemistry (with Professor I. Fridovich), Duke University, Durham, North Carolina, U.S.A. |
| 1988-2004 | Israeli representative to the ECP\GR Allium Working Group. |
| 1990-1992 | Chairman, Department of Field and Vegetable Crops, Faculty of Agriculture, The Hebrew University of Jerusalem. |
| 1992-1993 | Research Associate, Department of Biochemistry (with Professor I. Fridovich), Duke University, Durham, North Carolina, U.S.A. |
| 1992 to date | Professor, Department of Field Crops, Vegetables and Genetics, Faculty of Agriculture The Hebrew University of Jerusalem. |
| 1993-1996 | Head of the Faculty of Agriculture Research Committee (elect). |
| 1994-2002 | Head of the Academic Committee of the Israeli Gene Bank. |
| 1997-2001 | Dean, Faculty of Agricultural, Food and Environmental Quality Sciences (elect). |
| 2001-2008 | Rector (Provost), The Hebrew University of Jerusalem (elect) |
| 2006 to date | Member, the Consultation Board of the American-Asian Journal of Scientific Research, (the International Digital Organization for Scientific Information). |
| 1990-1992 | Chairman, Department of Field Crops, Vegetables and Genetics, Faculty of Agriculture (elect). |
| 1990-1992 | Chairman, Department of Field Crops, Vegetables and Genetics, Faculty of Agriculture (elect). |
| 1991 | Faculty of Agriculture, Ad hoc Committee for Planning the Faculty's Physical Program. |
| 1994-1997 | Head of the Faculty of Agriculture Research Committee (elect). |
| 1997-2001 | Dean, Faculty of Agricultural, Food and Environmental Quality Sciences (elect). |
| 2001–2004 | Rector (Provost), The Hebrew University of Jerusalem (elect). |