Recombination of Chromosomes 3Am and 5Am of Triticum monococcum With Homeologous Chromosomes 3A and 5A of Wheat: The Distribution of Recombination Across Chromosomes

Recombination of Chromosomes 3A^m and 5A^m of Triticum monococcum With Homeologous Chromosomes 3A and 5A of Wheat: The Distribution of Recombination Across Chromosomes

Ming-Cheng Luo^a, Zu-Li Yang^a, Rama S. Kota^a, and Jan Dvo $r$ ák^a
^a Department of Agronomy and Range Science, University of California, Davis, California 95616

Corresponding author: Ming-Cheng Luo, Department of Agronomy and Range Science, University of California, Davis, 1 Shields Ave., Davis, CA 95616-8515., mcluo{at}ucdavis.edu (E-mail)

Communicating editor: J. A. BIRCHLER

Recombination of chromosomes 3A^m and 5A^m of Triticum monococcumwith closely homeologous chromosomes 3A and 5A of T. aestivumwas compared with recombination across corresponding homologouschromosome pairs. Differentiation between the homeologues impactedrecombination in the proximal regions of the long arms the mostand in the distal regions of the long arms the least. It isconcluded that this variation principally reflects allocationof multiple crossovers across an arm and positive crossoverinterference across chromosome arms. Recombination rates betweenhomeologous chromosomes 5A^m and 5A differed in the oppositesexes.

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