Detection and Mapping of a Major Locus for Fusarium Wilt Resistance in Common Bean
A. L. Falla,
P. F. Byrne*,a,
G. Jungb,
D. P. Coynec,
M. A. Bricka and
H. F. Schwartzd
a Dep. of Soil and Crop Sciences, Colorado State Univ., Ft. Collins, CO 80523
b Dep. of Plant Pathology, Univ. of Wisconsin, Madison, WI 53706
c Dep. of Horticulture, Univ. of Nebraska, Lincoln, NE 68583
d Dep. of Bioagricultural Sciences and Pest Management, Colorado State Univ., Ft. Collins, CO 80523

View larger version (25K):
[in a new window]
|
Fig. 1. Frequency distribution of mean Fusarium wilt disease severity index (DSI) scores of common bean Belneb RR-1 x A55 RILs. Number of lines falling between DSI points are indicated. Mean parental DSI scores and standard error values are indicated with arrows.
|
|

View larger version (21K):
[in a new window]
|
Fig. 2. Log-likelihood ratio for QTL detection along common bean linkage group (LG) 10 showing the peak log of the odds (LOD) score at marker U20.750. Marker names are listed to the left of the LG diagram and cumulative cM distances are indicated to the right. Markers showing significant segregation distortion are indicated by asterisks (*, P < 0.05; **, P < 0.01).
|
|

View larger version (21K):
[in a new window]
|
Fig. 3. Frequency of A55 and Belneb RR-1 alleles at locus U20.750 for common bean Fusarium wilt disease severity classes.
|
|
Copyright © 2001 by the Crop Science Society of America.