And the difference in mean genetic distance between popcorn and flint corn compared to the mean genetic distance between popcorn and dent corn was at 0.01 significant level.

• 此外，硬粒型玉米和爆裂玉米自交系间的平均遗传距离与马齿型玉米和爆裂玉米自交系间的平均遗传距离在0.；01水平上差异极显著。