title: Relationship between chromosome 9 of maize and wheat homeologous group 7 chromosomes.
abstract: Comparison of the genetic map of maize chromosome 9 with maps of wheat chromosomes has revealed a high degree of colinearity between maize chromosome 9 and the group 4 and 7 chromosomes of wheat. The order of DNA markers on the short arm and a proximal region of the long arm of the genetic map of maize chromosome 9 is highly conserved with the marker order on the short arm and proximal region of the long arm of the genetic map of the wheat homeologous group 7 chromosomes. A major part of the long arm of the genetic map of maize chromosome 9 is homeologous with a short segment in the proximal region of the long arm of the genetic map of the wheat group 4 chromosomes. Evidence is also presented that maize chromosome 9 has diverged from the wheat group 7 chromosomes by both a pericentric and a paracentric inversion. The paracentric inversion is probably unique to maize among the major cereal genomes.
authors.affiliation: John Innes Centre, Norwich Research Park, Colney, United Kingdom.
authors.forename: K M
authors.initials: KM
authors.lastname: Devos
authors.forename: S
authors.initials: S
authors.lastname: Chao
authors.forename: Q Y
authors.initials: QY
authors.lastname: Li
authors.forename: M C
authors.initials: MC
authors.lastname: Simonetti
authors.forename: M D
authors.initials: MD
authors.lastname: Gale
mesh_terms: D002503:Centromere; D007446:Chromosome Inversion; D002874:Chromosome Mapping; D002875:Chromosomes; D003001:Cloning, Molecular; D005964:Glucosyltransferases / Q000235:genetics; D012150:Polymorphism, Restriction Fragment Length; D013045:Species Specificity; D014908:Triticum / Q000235:genetics*; D003313:Zea mays / Q000235:genetics*
chemical_list: D005964:Glucosyltransferases; C022699:sucrose synthase