Submitted to: Corn Breeders School Illinois
Publication Type: Proceedings
Publication Acceptance Date: 3/1/2008
Publication Date: 3/4/2008
Citation: Williams, M., Pataky, J.K., Reichers, D.E. 2008. Sensitivity to P450-metabolized herbicides in sweet corn: genetic basis and implications. In: Proceedings of the 44th Annual Corn Breeders School Illinois. March 3-4, 2008. p. 103-111.
Technical Abstract: This paper reviews research that our group has conducted the last six years to resolve the issue of sweet corn sensitivity to postemergence herbicides. As a result, commercial sweet corn breeders are currently selecting against the allele(s) that condition herbicide sensitivity by screening with nicosulfuron and mesotrione. Eventually, selection against sensitive inbreds will reduce the number of commercially-released hybrids at risk from herbicide injury. Also, many P450-metabolized herbicides are being formulated with safeners that enhance P450 enzymes. These safeners will likely lower the risk of injury to hybrids that are heterozygous for cytochrome P450 genes.