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The additive and dominance, and dominance X dominance gene effects regulate the inheritance of maize kernel resistance to ear rot caused by Fusarium graminearum. The F(sub 1) generation of a cross between resistant and susceptible maize varieties is as resistant as the resistant parent. The F(sub 2) generation and back crosses exhibit variations in their level of resistance. Additive effects explain more than 68% of the genetic variation. The results of the study indicate that the resistance is under genetic control and is affected by 4.6 to 13.7 genes.