International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 4 9 2015 September 10 Karyotypic analysis in three species of Allium and their some Varieties 1 9 EN Ahirwar Ramesh 1 School of Studies in Botany, Vikram University Ujjain, M.P., 456010, INDIA > Research Paper 2015 5 13 2015 September 10 Karyotypic studies were made in 3 three species of Allium genus (Allium cepa L., Allium sativum L. and Allium tuberosum Rottl). All the three varieties of Allium cepa as Nasik, White and Kashmiri and two varieties Allium sativum as Deshi and Kashmiri were diploid with (2n=16) and Allium tuberosum was tetraploid with (2n=32). The chromosome types were detected as mostly metacentrics (M), submetacentrics (Sm) and few subtelocentrics (St). Karyotype formula is 8M+6Sm+2St in all the varieties of Allium cepa and Allium sativum. The sixth pair of subtelocentric chromosomes was nucleolar represented by prominent satellites in Allium sativum. Karyotype formula is 22M+6Sm+4St in Allium tuberosum. All the species have symmetrical karyotype. Copyright@ International Science Community Association