Frequency of pairing between the 1B/1R translocation and its respective homo(eo)logues in a wheat-rye hybrid as revealed by GISH

Ervin D'Nagy, M. Molnár-Láng

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Abstract

An octoploid triticale developed between the common wheat line 'Martonvasari 9 krl' and the rye cultivar 'Lovaszpatonai' was crossed with the 1B/1R wheat variety 'Matador'. The frequency of chromosome associations involving the 1B/1R translocation was examined at metaphase I of meiosis in BC1 plants using genomic in situ hybridization (GISH). Most of the chromosome bonds were rod bivalents (67%) and trivalents (26.6%); one quadrivalent was also observed (1.2%). The 1RS arm of the translocation chromosome paired with that of 'Lovaszpatonai' rye in only 32% of the pollen mother cells, whereas the translocated 1BL arm exhibited much higher pairing (90%) with its wheat homo(oe)logues.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalCereal Research Communications
Volume28
Issue number1-2
Publication statusPublished - Jan 1 2000

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ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Genetics

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