[Hybrids of Aegilops cylindrica Host with Triticum durum Desf. and T. aestivum L].
The hybrids of durum and bread wheat with Ae. cylindrica have been obtained without using an embryo rescue technique. The hybrid output (of pollinated flower number) in the field conditions scored 1.0, 15.3 and 10.0% in the crosses T. durum x Ae. cylindrica, Ae. cylindrica x T. durum and T. aestivum x Ae. cylindrica, respectively. A high level of meiotic chromosome pairing between homologous D genomes of bread wheat and Aegilops has been revealed (c = 80.0-83.7%). The possibility of homoeological pairing between wheat and Ae. cylindrica chromosomes has been shown. Herewith, the correlation between the levels of homological and homoeological pairing is absent. The possibilities of genetic material interchange, including between the tetraploid species, as well as the using of Ae. cylindrica cytoplasm for durum wheat breeding are discussed.
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D032461:Chromosomes, Plant / Q000235:genetics* / Q000648:ultrastructure; D003433:Crosses, Genetic; D006824:Hybridization, Genetic / Q000235:genetics*; D008540:Meiosis / Q000235:genetics*; D013045:Species Specificity; D014908:Triticum / Q000235:genetics* / Q000648:ultrastructure