title: Comparative mapping of genes for glume colouration and pubescence in hexaploid wheat (Triticum aestivum L.).
abstract: Microsatellite markers were used to map the major genes Bg (determining black glume colour), Rg1 and Rg3 (red glume), and a locus determining smokey-grey coloured glume to the distal ends of the short arms of the homoeologous group 1 chromosomes, proximally (or closely linked) to Xgwm1223 and distal to Xgwm0033. On this basis, we propose that these genes represent a set of homoeoloci, designated Rg-A1, Rg-B1, and Rg-D1. Rg3 and Bg appear to be variant alleles of Rg-A1. Both Rg3 and Bg are closely linked with the major glume pubescence gene Hg. Similarly, the hexaploid wheat smokey-grey glume gene and Rg2 represent alleles at Rg-D1. The microsatellite markers linked to the Rg genes were used to analyse a phenotypically and genotypically characterized set of Siberian spring wheats. A coincidence between the presence of the 264-bp allele of Xgwm0136 and Rg-A1b (Rg3) was observed; so Xgwm0136 can probably be used as a diagnostic marker for this gene.
authors.affiliation: Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentjeva 10, Novosibirsk 630090, Russia. khlest@bionet.nsc.ru
authors.forename: E K
authors.initials: EK
authors.lastname: Khlestkina
authors.forename: T A
authors.initials: TA
authors.lastname: Pshenichnikova
authors.forename: M S
authors.initials: MS
authors.lastname: Röder
authors.forename: E A
authors.initials: EA
authors.lastname: Salina
authors.forename: V S
authors.initials: VS
authors.lastname: Arbuzova
authors.forename: A
authors.initials: A
authors.lastname: Börner
mesh_terms: D002874:Chromosome Mapping; D032461:Chromosomes, Plant; D018744:DNA, Plant / Q000235:genetics; D017343:Genes, Plant; D008040:Genetic Linkage; D018895:Microsatellite Repeats; D010641:Phenotype; D010860:Pigments, Biological / Q000235:genetics*; D018515:Plant Leaves / Q000235:genetics; D011003:Ploidies; D014908:Triticum / Q000235:genetics* / Q000378:metabolism
chemical_list: D018744:DNA, Plant; D010860:Pigments, Biological