Introgression of Allium fistulosum L. into Allium cepa L.: cytogenetic evidence
- 1 January 1990
- journal article
- research article
- Published by Springer Nature in Theoretical and Applied Genetics
- Vol. 79 (1) , 113-118
- https://doi.org/10.1007/bf00223796
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.Keywords
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