A study evaluated new Quality Protein Maize hybrids for their ability to produce high grain yield. They crossed eight inbred maize plants to see which combinations would give the best results. The researchers found that some hybrids showed better performance than others, with one particular cross, LM-13 x HKI-34, showing a significant increase in grain yield. They also discovered that certain parent plants, BHU-N6 and LM-13, were the best at passing on traits related to grain yield and protein content. Overall, the study suggests that the LM-13 x HKI-34 hybrid has potential for commercial use due to its promising performance in the field.