Abstract
The cultivation of the triploid viviparous onion is reported from Tibet, Kashmir, Jammu, Croatia, Germany, The Netherlands, France, Guadeloupe, and Canada. Because of certain resemblance to the diploid top onion, Allium x proliferum, it was assumed that the parents of triploids might be also A. cepa and A. fistulosum. Accessions of A. altaicum, A. cepa, A. fistulosum, A. galanthum, A. oschaninii, A. x proliferum, A. pskemense, A. roylei, A. schoenoprasum, and A. vavilovii were investigated by isozyme analysis. The results confirmed only one species of sect. Cepa, either A. cepa, A. oschaninii or A. vavilovii, as parent of the triploid onions. A. fistulosum was excluded from the ancestry. The second parent remains still unknown. Two rare species of sect. Cepa s.l., A. farctum from Pakistan and Afghanistan and A. rhabdotum from Bhutan, were not studied. They could have been involved in the evolution of the triploids and should be analysed in this respect.
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Maaß, H.I. Studies on triploid viviparous onions and their origin. Genetic Resources and Crop Evolution 44, 95–99 (1997). https://doi.org/10.1023/A:1008606706218
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DOI: https://doi.org/10.1023/A:1008606706218