Chromosome behavior and sterility of hybrids between the common onion,Allium cepa,and the related wild A. oschaninii |
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| Authors: | McCollum Gilbert D |
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| Institution: | (1) Agricultural Research Service, Plant Genetics and Germplasm Institute, U.S. Department of Agriculture, 20705 Beltsville, Maryland, USA |
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| Abstract: | Summary Four hybrid plants were obtained when cytoplasmic male-sterile onion inbreds, Allium cepa L., were pollinated with a wild cepa-like allium introduced from northeastern Iran and identified as A. oschaninii
O. Fedtsch. It has been proposed on morphological grounds that A. oschaninii is wild A. cepa or the ancestor of A. cepa. Nevertheless, chromosome irregularities and complete sterility in the hybrids suggest that there may be a greater sterility barrier between A. cepa and A. oschaninii than between A. cepa and 3 other species reported to cross with A. cepa, namely A. fistulosum L., A. galanthum
Kar. et Kir., and A. pskemense
B. Fedtsch.Cooperative investigation of the U.S. Department of Agriculture and the Idaho Agricultura Experiment Station, Parma Branch Station. |
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