[Toxicity of anti-herbicide gene (BAR) transgenic rice]

In order to evaluate the safety of anti-herbicide gene(BAR) transgenic rice, acute toxicity experiments, mutation experiments and a 30-day feeding test were conducted. The results were as follows: The oral LD50 for mice and rats was larger than 21.5 g/kg BW and no mutation was found. The rats consuming 16.32 and 64 g/kg BW were in good growth and development at the 30-day feeding test. The body weight, food utilization, routine blood tests, the ratio of organ weight to body weight, and patho-histological observations had no obvious change. The none effect dosage for the transgene rice was 64 g/kg.