Manipulation of Homologous and Homoeologous Chromosome Recombination in Wheat

  • Adam J. LukaszewskiEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1429)


Given the sizes of the three genomes in wheat (A, B, and D) and a limited number of chiasmata formed in meiosis, recombination by crossing-over is a very rare event. It is also restricted to very similar homologues; the pairing homoeologous (Ph) system of wheat prevents differentiated chromosomes from pairing and crossing-over. This chapter presents an overview and describes several systems by which the frequency or density of crossing-over can be increased, both in homologues and homoeologues. It also presents the standard system of E.R. Sears for engineering alien chromosome transfers into wheat.

Key words

Triticum aestivum Crossing-over The Ph system Recombination stringency Structural chromosome variants 


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of Botany and Plant SciencesUniversity of CaliforniaRiversideUSA

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