Genome relationships between octoploid and decaploid Thinopyrutn ponticum |
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Authors: | MICHAEL MOUSTAKAS |
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Institution: | Department of Botany, University of Thessaloniki, P.O. Box 109, 540 06 Thessaloniki, Greece |
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Abstract: | MOUSTAKAS, M., 1993. Genome relationships between octoploid and decaploid Thinopyrum ponticum . The genomic relationships between octoploid and decaploid Thinopyrum ponticum were determined by computer-aided karyotype analysis. All the chromosome pairs of the octoploid race can be matched with those of the decaploid chromosome race. Four chromosome pairs that were recognized as marker chromosomes in octoploid and decaploid T. ponticum were almost identical. It is suggested that the two chromosome races of T. ponticum are segmental allopolyploids with genome designations JjJjJeJe and JjJjJjJeJe. Genome designations Jand Je represent the same genome but with structural differentiation. Phylogenetic relationships between Thinopyrum species may be indicated by the presence or absence and type of marker chromosomes in the different species. |
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Keywords: | Karyotype analysis karyotypic evolution marker chromosomes phylogenetic relationships segmental allopolyploids |
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