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The Journal of Heredity 1998:89(1)
© 1998 The American Genetic Association 89:87-89

Brief communication. Preferential male transmission of an alien chromosome in wheat

J Jiang, and BS Gill

Wheat Genetics Resources Center and Department of Plant Pathology, Kansas State University, Manhattan, Kansas, USA

A telocentric chromosome 5HtL from Elymus trachycaulus (Link) Gould ex Shinners was transferred into common wheat (Triticum aestivum L.). This chromosome was assigned to the homoeologous group 5 of Triticeae species by restriction fragment length polymorphism (RFLP) analysis. Chromosome 5HtL was transmitted in 20% of the female gametes and 97% of the male gametes in the genetic background of wheat, although the expected transmission frequencies of 5HtL through female and male gametes are 25% and 0-5% respectively. It is likely that a gene located on 5HtL promotes male gamete competition. We suggest that the long arms of homoeologous group 5 chromosomes in Triticeae species carry genes that affect their transmission through male gametes.


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P. Zhang, W. Li, B. Friebe, and B. S. Gill
The Origin of a "Zebra" Chromosome in Wheat Suggests Nonhomologous Recombination as a Novel Mechanism for New Chromosome Evolution and Step Changes in Chromosome Number
Genetics, July 1, 2008; 179(3): 1169 - 1177.
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