Introgression of Allium fistulosum L. into Allium cepa L.: cytogenetic evidence

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1990 English Publisher:Springer Science and Business Media LLCJournal:Theoretical and Applied Genetics, volume 79, pages 113-118 (issn: 0040-5752, eissn: 1432-2242,

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Authors: E B, Peffley; P D, Mangum;

doi: 10.1007/bf00223796

pmid: 24226129

Introgression of Allium fistulosum L. into Allium cepa L.: cytogenetic evidence

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Abstract

A diploid Allium cepa plant was recovered from the backcross of an interspecific triploid (2 x A. cepa + 1 x A. fistulosum) to an A. cepa diploid which exhibited both A. cepa and A. fistulosum Adh-1 alleles. Cytogenetic analyses revealed a recombinant sub-telocentric chromosome. The ADH-1 locus is believed to be on the long arm of the sub-telocentric A. fistulosum chromosome 5. Meiosis of the triploid progenitor gives strong evidence that recombination occurred. A. fistulosum chromosome 8 has been substituted for A. cepa chromosome 1.

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