title: Cytologically based physical maps of the group-2 chromosomes of wheat.
abstract: We have constructed cytologically based physical maps (CBPMs), depicting the chromosomal distribution of RFLP markers, of the group-2 chromosomes of common wheat (Triticum aestivum L. em Thell). Twenty-one homozygous deletion lines for 2A, 2B, and 2D were used to allocate RFLP loci to 19 deletion-interval regions. A consensus CBPM was colinearily aligned with a consensus genetic map of group-2 chromosomes. The comparison revealed greater frequency of recombination in the distal regions. Several molecularly tagged chromosome regions were identified which may be within the resolving power of pulsed-field gel electrophoresis. The CBPMs show that the available probes completely mark the group-2 chromosomes, and landmark loci for sub-arm regions were identified for targeted-mapping.
authors.affiliation: Department of Plant Pathology, Kansas State University, 66506, Manhattan, Kansas, USA.
authors.forename: D E
authors.initials: DE
authors.lastname: Delaney
authors.forename: S
authors.initials: S
authors.lastname: Nasuda
authors.forename: T R
authors.initials: TR
authors.lastname: Endo
authors.forename: B S
authors.initials: BS
authors.lastname: Gill
authors.forename: S H
authors.initials: SH
authors.lastname: Hulbert