Chromosome pairing in the allotetraploid Aegilops biuncialis and a triploid intergeneric hybrid.

@article{Cuado1996ChromosomePI,
  title={Chromosome pairing in the allotetraploid Aegilops biuncialis and a triploid intergeneric hybrid.},
  author={Nieves Cu{\~n}ado and Sergio Callejas and Mar{\'i}a Jes{\'u}s Garc{\'i}a and Juan Luis Santos and Aveliano Fern{\'a}ndez},
  journal={Genome},
  year={1996},
  volume={39 4},
  pages={664-70}
}
Chromosome pairing behaviour of the natural allotetraploid Aegilops biuncialis (genome UUMM) and a triploid hybrid Ae. biuncialis x Secale cereale (genome UMR) was analyzed by electron microscopy in surface-spread prophase I nuclei. Synaptonemal-complex analysis at zygotene and pachytene revealed that synapsis in the allotetraploid was mostly between homologous chromosomes, although a few quadrivalents were also formed. Only homologous bivalents were observed at metaphase I. In contrast… CONTINUE READING

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