Summary
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.
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Communicated by J.W. Snape
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Orellana, J., Fernández-Calvín, B., Vázquez, J.F. et al. Mapping of genes controlling seed storage-proteins and cytological markers on chromosome 1R of rye. Theoret. Appl. Genetics 85, 639–643 (1993). https://doi.org/10.1007/BF00220924
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DOI: https://doi.org/10.1007/BF00220924