Cytogenetic investigation of Triticum timopheevii (Zhuk.) Zhuk. and related species using the C-banding technique

Triticum timopheevii and related species Triticum militinae (2n=28, A(t)G) and Triticum zhukovskyi (2n=42, A(m)A(t)G), hybrids Triticum kiharae, Triticum miguschovae, the amphidiploid T. timopheevii x Triticum tauschii (all 2n=42, A(t)GD), Triticum fungicidum (ABA(t)G) and Triticum timonovum (2n=56,...

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Bibliographic Details
Published in:Theoretical and applied genetics 1994-11, Vol.89 (5), p.622-628
Main Authors: Badaeva, E D, Filatenko, A A, Badaev, N S
Format: Article
Language:English
Subjects:
bandeo de cromosomas
banding chromosomique
cariotipos
caryotype
chromosome
chromosome banding
chromosomes
cromosomas
genetic polymorphism
genomas
genome
genomes
karyotypes
polimorfismo genetico
polymorphisme genetique
triticum
Triticum tauschii
Triticum timopheevii
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Summary:Triticum timopheevii and related species Triticum militinae (2n=28, A(t)G) and Triticum zhukovskyi (2n=42, A(m)A(t)G), hybrids Triticum kiharae, Triticum miguschovae, the amphidiploid T. timopheevii x Triticum tauschii (all 2n=42, A(t)GD), Triticum fungicidum (ABA(t)G) and Triticum timonovum (2n=56, A(t)A(t)GG) were analyzed using the C-banding technique. Chromosomes of the A(m) and A(t) genomes in the karyotype of T. zhukovskyi differed in their C-banding pattern. Partial substitutions of A(t)-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. A(t)- 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 A(t) and G genomes is determined by the origin and specificity of cultivation of studied species.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00222457