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Genome relationships in Thinopyrum junceum (L.) Löve polyploid complex
Author(s) -
Moustakas M.
Publication year - 1992
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1992.tb00510.x
Subject(s) - genome , polyploid , biology , genetics , chromosome , taxon , genome size , evolutionary biology , botany , gene
SUMMARY The genomic relationships between Thinopyrum bessarabicum 2 n = 14, T. junceiforme 2 n = 28, T. sartorii 2 n = 28 and T. junceum 2 n = 42 were determined by computer‐aided karyotype analysis. The results revealed that the genome of T. bessarabicum is similar to one of the two nearly identical genomes of J. junceiforme and the genome designations J j 1 J j 1 and J j 1 J j 1 J j 2 J j 2 are proposed for the two taxa respectively. The chromosome complement of T. junceiforme is found very similar to that of T. sartorii for which the genome designation J j 1 J j 1 J j 3 J 3 is advocated, while both taxa are characterized as segmental allotetraploids. Thinopyrum junceum is characterized as segmental allohexaploid with the genome designation J j 1 J j 1 J j (2) J j (2) J j (3) J j (3) . Furthermore, the examined taxa of T. junceum polyploid complex are considered as separate biological species and it is suggested that they have modified versions of the same basic genome.