Site of Action of Factors for Resistance toFusarium moniliformein Maize

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Abstract
F. moniliforme commonly infects maize kernels. An investigation was made of which kernel tissue was the site where resistance factor(s) were operative by evaluating the parents and reciprocal F1, F2 and backcross generations. Differences were conditioned by the genotype of the pericarp, and the genotype of the endosperm, embryo, or cytoplasm had little, if any, effect on the percentage of kernels infected by F. moniliforme. Selection for resistance should be most efficient when the pericarp is homozygous, such as at the inbred level.