Although 13 out of 15 EU member-states were against allowing the Novartis company to import and grow genetically modified maize in Europe, the European Commission used bullyboy tactics and forced it through, according to the Green Party MEP, Ms Nuala Ahern.
She added: "Austria and Luxembourg, who banned the use of the maize, are now being subjected to bullyboy tactics by the Commission to force them to lift the ban. "This is despite the commission's proposals having already been turned down by the European Parliament and the Article 21 committee of national experts."
Speaking at a science week debate on genetically modified organisms (GMOs) in the University of Limerick, she challenged young scientists to investigate genetic engineering and its long-term effects.
GMOs have a safety record second to none, said Dr Catherine Adley of the university's department of chemistry and environmental sciences.
Mr Sydney Reid, business manager of Monsanto Ireland - the first company to grow GMO crops in Ireland - said biotechnology would be a global industry and Ireland had the potential to be a major player. According to the World Health Organisation, it would lead to highly effective vaccines and help to tackle global food shortages.
Father Sean McDonagh of the environmental group, Voice, called for a moratorium on GMO use because of what he considers to be their associated risks.