Cytogenetic investigation of Triticum timopheevii (Zhuk.) Zhuk. and related species using the C-banding technique |
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| Authors: | E D Badaeva A A Filatenko N S Badaev |
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| Institution: | (1) Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia;(2) Vavilov Institute of Plant Industry, Russian Agricultural Academy, Bolshaya Morskaya str. 44, 190000 St. Petersburg, Russia;(3) Bioengineering Centre, Russian Academy of Sciences, Vavilov str. 34/5, 117334 Moscow, Russia;(4) Present address: Wheat Genetics Resource Center, Department of Plant Pathology, Kansas State University, Throckmorton Hall, 66506-5502 Manhattan, KS, USA |
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| Abstract: | Triticum timopheevii and related species T. militinae (2n=28, AtG) and T. zhukovskyi (2n=42, AmAtG), hybrids T. kiharae, T. miguschovae, the amphidiploid T. timopheevii x T. tauschii (all 2n=42, AtGD), T. fungicidum (ABAtG) and T. timonovum (2n=56, AtAtGG) were analyzed using the C-banding technique. Chromosomes of the Am and At genomes in the karyotype of T. zhukovskyi differed in their C-banding pattern. Partial substitutions of At-genome chromosomes and a complete substitution of the G-genome chromosomes by homoeologous chromosomes of an unidentified tetraploid wheat species with an AB genome composition were found in the T. timonovum karyotype. At- and G-genome chromosomes in the karyotypes of all studied species had similar C-banding patterns and were characterized by a low level of polymorphism. The comparative stability of the At and G genomes is determined by the origin and specifity of cultivation of studied species. |
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| Keywords: | Triticum timopheevii Amphiploids Karyotype C-banding Polymorphism |
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