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Different species-specific chromosome translocations in Triticum timopheevii and T. turgidum support the diphyletic origin of polyploid wheats.
Chromosome Res. 1994 Jan; 2(1):59-64.CR

Abstract

Triticum timopheevii ssp. timopheevii and T. timopheevii ssp. araraticum were analysed by sequential N-banding and genomic in situ hybridization. Three chromosomes, 6At, 1G and 4G, were involved in At-G intergenomic translocations in all six lines analysed. These chromosomes may be derived from a cyclic translocation that is species-specific to T. timopheevii. In contrast, Triticum turgidum has a species-specific cyclic translocation involving chromosomes 4A, 5A and 7B. The discovery of different species-specific chromosome translocations supports the diphyletic hypothesis of the evolution of tetraploid wheats. The results from genomic blocking analysis also revealed that the chromosomes of Aegilops speltoides are closer to the G genome than the B genome chromosomes. The possible role of species-specific translocations in the evolution of wheat is discussed.

Authors+Show Affiliations

Wheat Genetics Resource Center, Kansas State University, Manhattan 66506.No affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

8162322

Citation

Jiang, J, and B S. Gill. "Different Species-specific Chromosome Translocations in Triticum Timopheevii and T. Turgidum Support the Diphyletic Origin of Polyploid Wheats." Chromosome Research : an International Journal On the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology, vol. 2, no. 1, 1994, pp. 59-64.
Jiang J, Gill BS. Different species-specific chromosome translocations in Triticum timopheevii and T. turgidum support the diphyletic origin of polyploid wheats. Chromosome Res. 1994;2(1):59-64.
Jiang, J., & Gill, B. S. (1994). Different species-specific chromosome translocations in Triticum timopheevii and T. turgidum support the diphyletic origin of polyploid wheats. Chromosome Research : an International Journal On the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology, 2(1), 59-64.
Jiang J, Gill BS. Different Species-specific Chromosome Translocations in Triticum Timopheevii and T. Turgidum Support the Diphyletic Origin of Polyploid Wheats. Chromosome Res. 1994;2(1):59-64. PubMed PMID: 8162322.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Different species-specific chromosome translocations in Triticum timopheevii and T. turgidum support the diphyletic origin of polyploid wheats. AU - Jiang,J, AU - Gill,B S, PY - 1994/1/1/pubmed PY - 1994/1/1/medline PY - 1994/1/1/entrez SP - 59 EP - 64 JF - Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology JO - Chromosome Res VL - 2 IS - 1 N2 - Triticum timopheevii ssp. timopheevii and T. timopheevii ssp. araraticum were analysed by sequential N-banding and genomic in situ hybridization. Three chromosomes, 6At, 1G and 4G, were involved in At-G intergenomic translocations in all six lines analysed. These chromosomes may be derived from a cyclic translocation that is species-specific to T. timopheevii. In contrast, Triticum turgidum has a species-specific cyclic translocation involving chromosomes 4A, 5A and 7B. The discovery of different species-specific chromosome translocations supports the diphyletic hypothesis of the evolution of tetraploid wheats. The results from genomic blocking analysis also revealed that the chromosomes of Aegilops speltoides are closer to the G genome than the B genome chromosomes. The possible role of species-specific translocations in the evolution of wheat is discussed. SN - 0967-3849 UR - https://www.unboundmedicine.com/medline/citation/8162322/Different_species_specific_chromosome_translocations_in_Triticum_timopheevii_and_T__turgidum_support_the_diphyletic_origin_of_polyploid_wheats_ DB - PRIME DP - Unbound Medicine ER -