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Comparative study of the structure of chromosome 1 R derived from S ecale montanum and S ecale cereale
Author(s) -
Li Jianjian,
Gyawali Yadav Prasad,
Zhou Ruonan,
Stein Nils,
Nasuda Shuhei,
Endo Takashi R.
Publication year - 2015
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/pbr.12314
Subject(s) - biology , chromosome , secale , genetics , common wheat , marker chromosome , microbiology and biotechnology , genome , gene , karyotype , botany
We produced 15 dissection lines of common wheat carrying segments of chromosome 1 R of wild rye ( S ecale montanum ) (1 R m ) by the gametocidal system. Using the 1 R m dissection lines and previously established 24 dissection lines of chromosome 1 R from cultivated rye ( S ecale cereale cv. ‘I mperial’) (1 R i ), we conducted cytological mapping of 97 markers that were amplified in the 1 R i addition line. Sixty‐eight of the 97 markers were amplified in the 1 R m addition line. To reveal what structural differentiation occurred in chromosome 1 R during domestication, we compared the cytological map of chromosome 1 R i with that of chromosome 1 R m , and also with the previously published cytological map of chromosome 1 R from wheat cultivar ‘B urgas 2’ (1 R B ). There was one discrepancy in marker order in the satellite region between chromosomes 1 R i and 1 R B , while there were four discrepancies in marker order between chromosomes 1 R i and 1 R m . These results suggested that during the domestication of rye, some intrachromosomal rearrangements had occurred in chromosome 1 R , although this chromosome is regarded as the most stable chromosome in the rye genome.