Analysis of meiotic pairing in hybrids of common wheat with three alien species

Meiotic analysis based on mathematical models was carried out to investigate genomic relationships in some tetraploid and pentaploid wheat F₁ hybrids. High optimized value of x (relative affinity) and observed value of c (chromosome arm pairing frequency) below 0.5 in the tetraploid hybrids of Triticum aestivum (2n=42) with Aegilops mutica (2n=14) and Thinopyrum bessarabicum (2n=14) indicated that there were no chromosomal homologies between the genomes of T. aestivum and Ae. mutica and between those of T. aestivum and Th. bessarabicum. The study also revealed that there are no homologous genomes present between T. aestivum and the tetraploid Aegilops variabilis (2n=28).