Abstract
The chromosome constitution and meiotic behaviour of 15 plants of F2 and BC1 progenies from the hybrid of 6x-triticalex × T. turgidum (L.) ssp. turgidum conv. durum (Desf.) (F1: 2n = 5x = 35; AABBR) were studied using C-banding patterns of both wheat and rye chromosomes as identifying features. Patterns in PMCs at first metaphase permitted the individual identification of the chromosomes of nine of the wheat and all of rye in all plants. The external length and internal heterochromatin of chromosomes were analysed and found to influence the meiotic behaviour of each chromosome pair. The existence of effects of both arm length and amount and distribution of heterochromatin on pairing are assumed. The results seem to demonstrate that of the two mentioned factors the first is the most important.
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Bernardo, A., Diaz, F. & Jouve, N. Chromosome factors affecting pairing in progenies of 6x-triticale × Triticum turgidum L. ssp. turgidum conv. durum (Desf.). Heredity 60, 455–461 (1988). https://doi.org/10.1038/hdy.1988.64
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DOI: https://doi.org/10.1038/hdy.1988.64
