caa a22 4500 477134351 CHVBK 20180405111713.0 cr unu---uuuuu 170330e19970901xx s 000 0 eng 10.1023/A:1003080720269 doi (NATIONALLICENCE)springer-10.1023/A:1003080720269 Detection of a 4DL chromosome segment translocated to rye chromosome 5R in an advanced hexaploid triticale line Bronco 90 [Elektronische Daten] [Shin Taketa, Tetsuya Nakazaki, Trude Schwarzacher, John Heslop-Harrison] Bronco 90 is an advanced line of hexaploid triticale and was reported to be a 2D(2R) chromosome substitution type. In F1 hybrids of this triticale with bread wheat, however, a meiotic configuration of 16 bivalents and 10 univalents was frequently observed indicating the presence of an additional D(R) chromosome substitution or D/R translocation. To determine the chromosome constitution of Bronco 90, C-banding and fluorescent in situ hybridization techniques were applied to somatic and meiotic metaphase chromosomes. These analyses revealed that in Bronco 90, the terminal 7% of the long arm of rye chromosome 5R is derived from the long arm of chromosome 4D. This translocated chromosome (5RS.5RL-4DL) and telosome 4DL formed metaphase I bonds at a frequency of 71%, demonstrating the significance of small terminal chromosome segments for pairing. This novel rye-wheat translocation is probably generated by homoeologous crossing-over because the distal region of 5RL is known to be homoeologous to that of 4DL. Possible association of this translocation with the absence of hairy peduncle character in Bronco 90 is discussed. Kluwer Academic Publishers, 1997 C-banding nationallicence fluorescent in situ hybridization nationallicence metaphase I bonds nationallicence translocation nationallicence triticale nationallicence Taketa Shin Research Institute for Bioresources, Okayama University, Chuo 2-20-1, 710, Kurashiki, Japan aut Nakazaki Tetsuya Faculty of Agriculture, Kyoto University, 606, Kyoto, Japan aut Schwarzacher Trude John Innes Centre, NR4 7UH, Colney, Norwich, U.K aut Heslop-Harrison John John Innes Centre, NR4 7UH, Colney, Norwich, U.K aut Euphytica Kluwer Academic Publishers 97/1(1997-09-01), 91-96 0014-2336 97:1<91 1997 97 10681 https://doi.org/10.1023/A:1003080720269 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003080720269 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taketa Shin Research Institute for Bioresources, Okayama University, Chuo 2-20-1, 710, Kurashiki, Japan aut NATIONALLICENCE 700 1- Nakazaki Tetsuya Faculty of Agriculture, Kyoto University, 606, Kyoto, Japan aut NATIONALLICENCE 700 1- Schwarzacher Trude John Innes Centre, NR4 7UH, Colney, Norwich, U.K aut NATIONALLICENCE 700 1- Heslop-Harrison John John Innes Centre, NR4 7UH, Colney, Norwich, U.K aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 97/1(1997-09-01), 91-96 0014-2336 97:1<91 1997 97 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer