Features of chromosome pairing at meiosis in mutant ph1c of durum wheat, Triticum turgidum var. durum

Enno, T.

Eesti Teaduste Akadeemia Toimetised, Bioloogia 43(2): 76-82


Accession: 002619680

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Lines of the [T. durum] mutant CDES35, with the locus ph1c increasing homoeologous pairing, fell into 2 groups differing in stability at meiosis. The first group had few anomalies at metaphase I and the percentage of microspore tetrads with disturbances was no more than 2.4%. The second group had a high frequency of anomalies at all stages of PMC meiosis. The results suggested that the 3 lines of the first group were heterozygous (Ph1c ph1c) and the desynaptic effect was unexpressed, allowing homologous pairing, while the 5 lines of the second group were homozygous for the locus ph1c (on chromosome 5B).