Researchers studied how high-pressure treatment affects starch accumulation in wheat grains. They used mutated wheat strains and found that starch, amylose, and amylopectin contents increased during the filling stage, with the highest accumulation rate at 15-20 days after flowering. Some mutants had higher starch content than the control, while others had lower. The control group had higher peak rates of starch and amylopectin compared to the treated samples, but mutants Gaoya 2 and Gaoya 5 had significantly higher amylose peak rates.