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The Journal of Heredity 1985:76(1):63-64
© 1985 The American Genetic Association 76:63-64

other

Meiotic pairing in hybrids of 6x-Triticale and the amphiploid Hordeum chilense X Triticum turgidum conv. durum

José Antonio Fernández, and Nicolás Jouve

The authors are, respectively, doctoral fellow and professor of genetics in the Department of Genetics, Faculty of Sciences, University of Alcalá de Henares. Ap. 20, Alcalá de Henares (Madrid), Spain. They thank Dr. A. Martin for seed samples.

Abstract

The Interamphiploid hybrid "6x-Triticale" X 6x-H. chilense X Triticum turgidum conv. durum was cytologically analyzed. This hybrid has a genome formula of AA BB R Hch with 2n = 6x = 42 chromosomes. Using a C-band staining method the genome origin of each chromosome pair was detected in pollen mother cells at metaphase l. Nine pairs of chromosomes were identified (4A, 7A, and the seven of the B genome). The remaining wheat chromosomes and the seven of chilense were assigned to its particular genome. Cells having less than 14 univalents and autosyndetic (R{equiv}R or Hch{equiv}Hch) or allosyndetic (R{equiv}Hch) pseudobivalents were observed.


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