ARS | Publication request: PROGRESS TOWARD IDENTIFYING NEW SOURCES OF GENETIC VARIATION ASSOCIATED WITH REDUCED LEVELS OF AFLATOXIN ACCUMULATION IN MAIZE

Submitted to: Aflatoxin Elimination Workshop Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: September 1, 2005
Publication Date: October 23, 2005
Citation: Brooks, T.D., Krakowsky, M.D., Williams, W.P., Windham, G.L. 2005. Progress toward identifying new sources of genetic variation associated with reduced levels of aflatoxin accumulation in maize [abstract]. In: Proceedings of the 2005 Multicrop Aflatoxin/Fumonisin Elimination & Fungal Genomics Workshop, October 23-27, 2005, Raleigh, North Carolina. p. 71.

Technical Abstract: The second year of a two year study designed to identify new sources of resistance to aflatoxin accumulation in maize is nearing completion. An F2-derived mapping population from a cross of Mp717x NC300 consisting of approximately 280 families was developed for the study. Mp717 is considered to be a highly resistant inbred that is derived from a genetically different background than Mp313E, an inbred in which quantitative trait loci (QTL) have been previously identified. NC300 is a southern adapted inbred. The goal of this study is to identify QTL associated with reduced aflatoxin accumulation in both locations, study how they interact within and between the two locations, and compare this to what was found in previous studies. Aflatoxin contamination data will be presented from the first year from both locations as well as initial QTL analysis results.