Abstract
Cytogenetic maps involving chromosomes 1R, 3R, 4R and 6R have been developed from the analysis of offspring of crosses between multiple heterozygous rye plants. The maps include isozyme loci GpiR1, Mdh-R1 and Pgd2 (located in chromosome 1R), Mdh-R2 (located in chromosome 3R), Pgm-R1 (located in chromosome 4R) and Aco-R1 (located in chromosome 6R). Various telomeric and interstitial C-bands of these four chromosomes, the centromere split of chromosome 3R, and translocation TR01 were used as cytological markers. By means of electron microscope analysis of spread pachytene synaptonemal complexes, the breakpoint of TR01 was physically mapped in chromosome arms 4RS and 6RL. From the linkage data, conclusions were derived concerning the cytological locations of the isozyme loci and the physical extent of the evolutive translocations involving chromosome arm 6RL.
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Alonso-Blanco, C., Goicoechea, P.G., Roca, A. et al. Genetic mapping of cytological and isozyme markers on chromosomes 1R, 3R, 4R and 6R of rye. Theoret. Appl. Genetics 88, 208–214 (1994). https://doi.org/10.1007/BF00225899
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DOI: https://doi.org/10.1007/BF00225899