May 28, 2019 01:38 PM EDT
New Mutations for Herbicide Resistance Rarer than Expected, Study Finds
CHAMPAIGN, Ill. -- After exposing more than 70 million grain amaranth seeds to a soil-based herbicide, researchers were not able to find a single herbicide-resistant mutant. Though preliminary, the findings suggest that the mutation rate in amaranth is very low and that low-level herbicide applicati...