1922, scientists from the University of Florida and Monsanto used genetic methods to change wheat characters for the first time.

Scientists introduce foreign genes into wheat to produce an enzyme that makes many powerful herbicides harmless to wheat. In this way, modern herbicides can be used to control weeds without harming wheat. Without weeds competing for water and nutrients, this kind of wheat will thrive. Scientists used a "gene gun" with a diameter of 0.22 mm to inject foreign genes into wheat cells. Millions of gold powder or tungsten powder particles are wrapped in genes and injected into wheat grain tissue composed of millions of cells.