title: A high-density consensus map of A and B wheat genomes.
abstract: A durum wheat consensus linkage map was developed by combining segregation data from six mapping populations. All of the crosses were derived from durum wheat cultivars, except for one accession of T. ssp. dicoccoides. The consensus map was composed of 1,898 loci arranged into 27 linkage groups covering all 14 chromosomes. The length of the integrated map and the average marker distance were 3,058.6 and 1.6 cM, respectively. The order of the loci was generally in agreement with respect to the individual maps and with previously published maps. When the consensus map was aligned to the deletion bin map, 493 markers were assigned to specific bins. Segregation distortion was found across many durum wheat chromosomes, with a higher frequency for the B genome. This high-density consensus map allowed the scanning of the genome for chromosomal rearrangements occurring during the wheat evolution. Translocations and inversions that were already known in literature were confirmed, and new putative rearrangements are proposed. The consensus map herein described provides a more complete coverage of the durum wheat genome compared with previously developed maps. It also represents a step forward in durum wheat genomics and an essential tool for further research and studies on evolution of the wheat genome.
authors.affiliation: CRA-Cereal Research Centre, SS16 km 675, 71122 Foggia, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Marone
authors.forename: Giovanni
authors.initials: G
authors.lastname: Laidò
authors.forename: Agata
authors.initials: A
authors.lastname: Gadaleta
authors.forename: Pasqualina
authors.initials: P
authors.lastname: Colasuonno
authors.forename: Donatella B M
authors.initials: DB
authors.lastname: Ficco
authors.forename: Angelica
authors.initials: A
authors.lastname: Giancaspro
authors.forename: Stefania
authors.initials: S
authors.lastname: Giove
authors.forename: Giosué
authors.initials: G
authors.lastname: Panio
authors.forename: Maria A
authors.initials: MA
authors.lastname: Russo
authors.forename: Pasquale
authors.initials: P
authors.lastname: De Vita
authors.forename: Luigi
authors.initials: L
authors.lastname: Cattivelli
authors.forename: Roberto
authors.initials: R
authors.lastname: Papa
authors.forename: Antonio
authors.initials: A
authors.lastname: Blanco
authors.forename: Anna M
authors.initials: AM
authors.lastname: Mastrangelo
mesh_terms: D002874:Chromosome Mapping / Q000379:methods*; D020090:Chromosome Segregation / Q000235:genetics; D032461:Chromosomes, Plant / Q000235:genetics*; D016384:Consensus Sequence; D008040:Genetic Linkage; D005819:Genetic Markers; D018745:Genome, Plant / Q000235:genetics*; D014178:Translocation, Genetic; D014908:Triticum / Q000235:genetics*
chemical_list: D005819:Genetic Markers