The researchers studied different sorghum plants to find ones that produce high yields of grain early in the season. They looked at four male sterile lines and twelve testers, making a total of 48 crosses. They found that one specific line (RMS 2010-10A) and one tester (RSV 1941) were the best at producing high grain yields quickly. These two plants should be used more in breeding programs to create sorghum hybrids that give a lot of grain and mature early.