A study looked at how different maize plants combine to produce better yields. They crossed six inbred maize lines to see which combinations gave the best results for grain yield, ear length, and kernel numbers. They found that some inbred lines had better overall effects on these traits, while certain combinations of parents also showed promising results. This suggests that certain maize plants have more favorable genes for producing higher yields, which could be useful for breeding new hybrids in the future.