Submitted to: Midwest Vegetable Variety Trial Report
Publication Type: Experiment Station
Publication Acceptance Date: 12/12/2010
Publication Date: 1/29/2011
Citation: Pataky, J., Williams, M., Warsaw, B. 2011. Sweet Corn Hybrid Disease Nursery - 2010. Midwest Vegetable Variety Trial Report 2010. Purdue University. p. 149-174. Interpretive Summary:
Technical Abstract: This report summarizes the reactions of 439 sweet corn hybrids to Stewart’s wilt, common rust, maize dwarf mosaic virus, Southern leaf blight, and Northern leaf blight based on their performance in the University of Illinois sweet corn disease nursery in 2010. The reactions of these hybrids to two herbicides products, including tembotrione+thiencarbazone-methyl and nicosulfuron are included. None of the hybrids were injured by topramezone. Most hybrids (317) were classified tolerant with no injury and little or no stunting. Eighty-one hybrids were classified as tolerant of one herbicide and moderately tolerant of the other. Nine hybrids were severely injured or killed by both herbicides and were classified as sensitive, including: 177A, 3175, 0870 5770, Code 1038, DMC 20-38, GSS 5763, HMX 6386S, Merit, and UY 2587 OQ. Four of these nine hybrids are known to be homozygous for a mutant cytochrome P450 (CYP) allele that conditions sensitivity to several P450-metabolized, postemergence herbicides. An additional 29 hybrids were classified as moderately sensitive to moderately tolerant to both herbicides. These hybrids probably are heterozygous for a mutant and functional CYP allele.