Herbicide resistant tropical maize and rice: needs and biosafety considerations
J Gressel, Weizmann Institute of Science, Rehovot, Israel

Herbicide tolerant oilseed rape in Europe: the FACTT programme
E J Booth, SAC, Aberdeen, UK
M Green, ADAS High Mowthorpe, Malton, UK
G de Both, Plant Genetic Systems NV, Astene (Deinze), Belgium

The value and exploitation of herbicide-tolerant crops in the US
F L Baldwin, University of Arkansas Cooperative Extension Service, Little Rock, USA