A study of the effect of a homoeologous pairing promoter on chromosome pairing in wheat/rye hybrids using genomic in situ hybridization

Abstract

Genomic in situ hybridization was used to study the relative frequency of wheat/wheat and wheat/ rye homoeologous chiasma formation in Triticum aestivum cv. Chinese Spring tetrasomie for chromosome 3B x Secale cereale cv. Petkus Spring hybrids. In addition to wheat/wheat and wheat/ rye homoeologous chiasma formation, pairing between apparently non-homologous rye chromosomes was also observed. The implications of the results obtained for the introgression of rye chromatin into wheat is discussed. © The Genetical Society of Great Britain.