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QTL Mapping for Fusarium Ear Rot and Fumonisin Contamination Resistance in Two Maize Populations

^a Department of Plant Pathology and Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
^b Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620
^c USDA-ARS, Plant Science Research Unit, Department of Plant Pathology, North Carolina State University, Raleigh, NC 27695-7616
^d Department of Crop Sciences, University of Illinois, Urbana-Champaign, IL 61801
^e Department of Plant Pathology, North Carolina State University, Raleigh, NC 27695-7567
^f USDA-ARS National Center for Agricultural Utilization Research, 1815 N University St., Peoria, IL, 61604
^g Pioneer Génétique, Pacé, France
^h USDA-ARS, Plant Science Research Unit, Department of Crop Science, North Carolina State University, Raleigh, NC 27695-7620

View larger version (53K): [in a new window]   Supplemental Fig. 1. Chromosomal locations of markers significant for mean fumonisin contamination resistance and ear rot resistance across environments in the GEFR population. Ovals are centered on maximum likelihood positions of QTL and extend 10 cM to either side, to reflect typical uncertainty levels in QTL positions (Cardinal et al., 2001[A1]). Regions significant for both rot and fumonisin (cross-hatched ovals) were determined by multivariate analysis. QTL locations are based on multiple interval mapping using QTL cartographer version 2.5.

View larger version (61K): [in a new window]   Supplemental Fig. 2. Chromosomal locations of markers significant for mean fumonisin contamination resistance and ear rot resistance across environments in the NCB population. Ovals are centered on maximum likelihood positions of QTL and extend 10 cM to either side, to reflect typical levels in QTL positions (Cardinal et al., 2001[A2]). Regions significant for both rot and fumonisin (cross-hatched ovals) were determined by multivariate analysis. QTL locations are based on multiple interval mapping using QTL cartographer version 2.5.

View larger version (21K): [in a new window]   Fig. 1. Schematic depiction of the maize chromosomes, with horizontal lines demarking bins (Davis et al., 1999). Centromeres are shown as thick black lines. Ovals represent QTLs mapped in GEFR population and rectangles represent QTLs mapped in the NCB population on the basis of means across all testing environments. Hash marks indicate QTL for both Fusarium ear rot and fumonisin contamination, black shapes indicate QTL for fumonisin contamination only, and white shapes indicate QTL for Fusarium ear rot only. Genetic maps and QTL locations for individual populations are presented in Supplemental Fig. 1 and 2.