View Full Table | Close Full ViewTable 1.

Mean disease severity index following inoculation of soybean seed with 100 μL of 2.5 × 104 macroconidia mL−1 of Fusarium graminearum in a rolled-towel assay.

 
Genotype Mean % seedlings affected†
PI 399073 94.3a
Sloan 89.6ab
Archer 87.8abc
Resnik 86.2bc
Ripley 85.6bc
Strong 82.8bcd
Williams 81.8bcd
Kottman 81.7bcd
Williams 82 81.8cd
Ohio-FG5 80.9cd
OX-208 78.2cd
L85-2325 77.8cde
Dennison 74.4de
L83-570 74.3de
Jack 73.4de
Stressland 72.8def
Ohio-FG1 65.9ef
Flint 65.2ef
OHS 303 60.5f
Prohio 41.5g
Conrad 35.0hg
PI 408211B 33.5hg
HC99-2846 31.7hg
PI 424354 24.0h
Mean 69.2
Mean disease severity represents the lesion length divided by the total length of the seedling multiplied by 100. Disease severity data were arcsine transformed; the actual means are reported in the table. The experimental design was randomized complete block, with three replications. The experiment was repeated for a total of two times. Values followed by the same letter were not significantly different according to Fisher’s protected least significant difference (P < 0.05) based on the arcsine-transformed data.



View Full Table | Close Full ViewTable 2.

Quantitative trait loci for partial resistance to Fusarium graminearum that were identified via interval mapping (IM) and composite interval mapping (CIM) using 262 F6:8 recombinant inbred lines of Conrad (resistant) × Sloan (susceptible).

 
IM
CIM
Chromosome Interval Nearest marker Consensus map† LOD Exp. var. LOD Exp. var. LOD thr.‡ R2§
cM cM % % %
8 0.0–10.8 BARC_051847_11270 101.9 3.1 6.0 3.1 5.0 1.4 9.2
13 21.0–23.8 FLOWER_COLOR W1/w1 locus 17.4 1.9 3.6 2.8 4.4 1.5 5.1
15 0.0–19.0 BARC_025663_049888 47.9 3.6 11.2 3.4 6.7 1.1 7.2
16 12.2–21.9 Satt693 38.0 3.0 5.9 2.9 4.3 1.4 5.2
19 31.7–40.3 BARCSOYSSR_19_1452 1.8 3.5 2.2 3.3 1.8 3.6
Consensus map position (Hyten et al. 2008) of the nearest marker in each interval.
Threshold of significance for LOD for each chromosome based on permutation tests of 1000 iterations (P < 0.05; Churchill and Doerge, 1994).
§R2 values from one-way ANOVA.