"Many of these things can be done through traditional breeding," says Doug Gurian-Sherman of the advocacy group Center for Food Safety. "There needs to be skepticism."
'New wave' groceries: Pink pineapples, purple tomatoes →
"I don't think it's useless technology ... (but) we shouldn't have an expectation that this technology is going to solve our drought problems in the foreseeable future _ at least severe droughts," he said.
Monsanto tests drought-tolerant biotech corn →