Inheritance of Resistance to Anthracnose Leaf Blight in Five Inbred Lines of Corn

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Abstract
Parent inbred lines, F1, F2 and backcross generations from 5 corn crosses were evaluated in the field for reaction to anthracnose leaf blight (ALB) which is caused by Colletotrichum graminicola. The crosses involved the susceptible inbred Oh07B crossed with resistant inbred lines H55, H84, Pa91, Pa762 and Syn B High-3. Individual plants were rated for reaction on the basis of percent leaf tissue infected. Generation mean analysis indicated that additive genetic effects were of primary importance in 4 of the 5 families. Resistance apparently was controlled by a few (2-4) dominant genes. Mass selection, pedigree and backcross breeding methods should all be effective means of breeding for resistance to ALB.