The researchers conducted an experiment to study how different combinations of wheat plants can produce higher grain yields. They found that certain crosses of wheat plants resulted in significantly better grain yields compared to the parent plants. Some combinations showed a desirable increase in grain yield, while others showed a standard increase. The cross between GW 11 and GW 451 had the highest increase in grain yield, followed by HD 2932 × GW 451 and HD 2932 × GW 496. These findings suggest that specific combinations of wheat plants can be used to develop high-yielding varieties.