title: Mapping of genes controlling seed storage-proteins and cytological markers on chromosome 1R of rye.
abstract: Rye secalins, telomeric C-bands, and telocentric chromosomes were used as markers in the progeny of a test-cross in order to determine the position of seed storage-protein genes Glu-R1 and Gli-R1 with respect to the centromere and both telomeres of chromosome 1 R in rye. These genes were linked to the centromere (32.35±3.28% and 36.27±3.37% recombination, respectively). Glu-R1 was loosely linked to the telomere of the long arm (43.63±3.47% recombination), while Gli-R1 was closely linked to the telomere of the short arm (9.80±2.08% recombination). This finding supports the possibility that rye ω- and γ-secalin genes may be located on the satellites, as has been described in wheat for genes that code similar proteins. The importance of metaphase-I pairing failure and its consequences for the estimation of the recombination fraction are also discussed.
authors.affiliation: Departamento de Genética, Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica, 28040, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Orellana
authors.forename: B
authors.initials: B
authors.lastname: Fernández-Calvín
authors.forename: J F
authors.initials: JF
authors.lastname: Vázquez
authors.forename: J M
authors.initials: JM
authors.lastname: Carrillo