1. Induction of haploid plants in onion (Allium cepa L.) by in vitro culture of unpollinated ovules;Campion;Plant Cell, Tiss. Org. Cult.,1990
2. Evolution of ploidy level in haploid plants of onion (Allium cepa) obtained through in vitro gynogenesis;Campion,1988
3. Haploid plant induction from unpollinated ovaries in onion;Muren;HortScience,1989
4. Culture of unpollinated ovules, ovaries and flower buds in some species of the genus Allium and haploid induction via gynogenesis in onion (Allium cepa L.);Keller;Euphytica,1990
5. Haploids from unpollinated ovaries of Allium cepa-single plant screening, haploid determination and long term storage;Keller,1990