Abstract
Hybridizations ofElymus nutans andE. jacquemontii were carried out with one species ofPseudoroegneria (“S” genome), and 20Elymus species, each containing either of the “SH”, “SY”, “SYH”, or “SYW” genomes. Chromosome configurations were analysed at metaphase I of the two target taxa and their interspecific hybrids. It is concluded that (i)E. nutans is an allohexaploid containing the “SYH” genomes, andE. jacquemontii is an allotetraploid having the “SY” genomes; (ii) the genomic affinity is associated with the geographic distance between the species studied; (iii) minor genomic structural rearrangements have occurred within the hexaploid taxon ofE. nutans.
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Lu, BR. Meiotic studies ofElymus nutans andE. jacquemontii (Poaceae, Triticeae) and their hybrids withPseudoroegneria spicata and seventeenElymus species. Pl Syst Evol 186, 193–212 (1993). https://doi.org/10.1007/BF00940798
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DOI: https://doi.org/10.1007/BF00940798