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Item Chromosome polymorphism in okra(Kerala Agricultural University, 1994) Suresh Babu, K V; Dutta, O PMeiotic study was made on nine okra lines (Abelnioschus esciilentuf [L] Moench.) resistant to yellow vein mosaic virus (YVMV), evolved by introgressing the resistant genes from A. tetnphyllus (L.) Medic. The chromosome number of the lines varied from 2n = 120 to 144. All the lines showed regular meiosis. The study confirmed the complex polyploidy in A. esculent us which can sustain a considerable number of additions and deletions of chromosomes.