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., Friebe, B., Lukaszewski, A.J., Gill, B.S. 2001. The centromere structure in Robertsonian wheat-rye translocation chromosomes indicates that centric breakage-fusion can occur at different positions within the primary constriction. Chromosoma 110 :335

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New wheat × barley, wheat × Aegilops biuncialis and wheat × rye hybrids were produced with the aim of alien gene transfer from these species into wheat. Amphiploids were produced with the help of colchicine treatment from the last two combinations. The new wheat × barley hybrids were multiplied in tissue culture because of the high degree of sterility and then pollinated with wheat to obtain backcross progenies. Wheat-barley chromosome pairing was detected using genomic in situ hybridization (GISH) in two combinations (Mv9 kr1 × Igri, Asakazekomugi × Manas). In vitro conditions caused an increase in chromosome arm association frequency in both combinations and in fertility in some regenerants. Five wheat-barley translocations were produced in a wheat background and characterized through the combination of cytogenetic and molecular genetic approaches (GISH, FISH and SSR markers). The following translocations were identified: 2DS.2DL-1HS, 3HS.3BL, 6BS.6BL-4HL, 4D-5HS and 7DL.7DS-5HS. Physical mapping of the SSR markers on chromosomes 1H and 5H was carried out using the intragenomic and interspecific translocation breakpoints and the centromere as physical landmarks.  Disomic wheat-Aegilops biuncialis additions were produced after backcrossing the wheat-Ae. biuncialis amphiploids. Fluorescence in situ hybridization (FISH) was carried out using two repetitive DNA clones (pSc119.2 and pAs1) on Ae. biuncialis and its two diploid progenitor species to detect chromosome polymorphism. The 7M and 3M disomic chromosome additions were selected and five more lines still need to be characterized.  The octoploid triticale (Mv9 kr1 × Lovászpatonai) produced in Martonvásár was crossed with a 1RS.1BL wheat cultivar Matador. GISH analysis detected pairing between the 1RS arm of the translocation chromosome and that of Lovászpatonai rye in 32 % of the pollen mother cells, making it possible to select recombinants from this combination. The new recombinants between the 1RS of Petkus and the 1RS of Lovászpatonai rye cultivars are being analysed with the help of microsatellite markers.

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structure of centromeres and telomeres. Annu. Rev. Biochem. , 53 , 163–194. Szostak J. W. The molecular structure of centromeres and telomeres Annu

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. (2001): High-resolution pachytene chromosome mapping of bacterial artificial chromosomes anchored by genetic markers reveals the centromere location and the distribution of genetic recombination along chromosome 10 of rice. Genetics , 157 , 1749

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Hungarian Medical Journal
Authors: Erika Csonka, Imre Cserpán, Katalin Fodor, Katalin Bajnóczky, István Andó, Gyula Hadlaczky, and Györgyi Bujdosó

573 580 Hadlaczky, G., Praznovszky, T., Cserpán, I. et al.: Centromere formation in mouse cells cotransformed with human DNA and a dominant marker gene. Proc

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.J. 2010. Behavior of centromeres in univalents and centric misdivision in wheat. Cytogenet. Genome Res. 129 :97–109. Lukaszewski A.J. Behavior of centromeres in univalents and centric

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frequency of centromere inactivation resulting in stable dicentric chromosomes of maize . Proc. Natl Acad. Sci. USA 103 : 3238 – 3243 . Ishikawa , G. , Nakamura , T. , Ashida , T

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Cereal Research Communications
Authors: B. Siahsar, S. Peighambari, A. Taleii, M. Naghavi, A. Nabipour, and A. Sarrafi

203 214 Han, F., Ullrich, S.E., Kleinhofs, A., Jones, B.L., Hayes, P.M., Wesenberg, D.M. 1997. Fine structure mapping of the barley chromosome 1 centromere region containing

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Acta Agronomica Hungarica
Authors: M. Hudcovicová, V. Šudyová, S. Šliková, E. Gregová, J. Kraic, F. Ordon, D. Mihálik, V. Horevaj, and Z. Šramková

1263 1269 Collins, N. C., Paltridge, N. G., Ford, C. M., Symons, R. H. (1996): The Yd2 gene for barley yellow dwarf virus resistance maps close to the centromere on the long

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, Chernigovsky district) was determined three times ( Probatova 2006 , Probatova and Sokolovskaya 1981 ). Most N. komarovii chromosomes have two arms, possibly metacentric and submetacentric. There are dotted chromosomes with an uncertain centromere position

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