Plant Genome I Conference
Town & Country Conference Center, San Diego, CA, November, 1992.
PG-I: AN UPDATE OF THE Phaseolus vulgaris LINKAGE MAP: ADDITION OF
KNOWN SEQUENCES, RAPDs, AND QTLs FOR SEED SIZE
AN UPDATE OF THE Phaseolus vulgaris LINKAGE MAP: ADDITION OF
KNOWN SEQUENCES, RAPDs, AND QTLs FOR SEED SIZE
C. Eduardo Vallejos, Ney S. Sakiyama, Zhi-Hong. Yu, Department of
Horticultural Sciences and Plant Molecular and Cellular Biology
Group, University of Florida, Gainesville, FL 32611
A backcross between a Mesoamerican breeding line
('XR-235-1') and the Andean cultivar 'Calima' had been used as a
mapping population to construct a linkage map of the common bean.
In addition to allelic differences at a large number of molecular
marker loci, these genotypes differ in seed size by a factor of
two. We have now added to the linkage map the location of five
known sequences, 12 RAPD markers, and have identified several
regions of the genome carrying QTLs that affect seed size. Data
have been analyzed with Mapmaker/QTL (Whitehead Institute for
Biomedical Research). The map now has over 260 markers that
cover about 1,000 cM of the bean genome.
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