Interspecific hybrids involving the recently described diploid taxon Avena atlantica

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Abstract
Chromosome pairing affinities of interspecific hybrids involving the newly discovered species Avena atlantica with A. strigosa, A. hirtula, A. prostrata, A. damascena, A. maroccana, and A. sativa are described. The complete and regular chromosome pairing observed in the hybrids involving A. hirtula and A. strigosa confirms the genomic designation to be AsAs. The chromosome pairing in the A. prostrata, A. damascena, A. maroccana, and A. sativa hybrids indicates that A. atlantica is no more closely related to these species than the other members of the AsAs genomic group. Key words: Avena, meiosis, hybridization, phylogeny.