Abstract
SUMMARYCytology of Eleutherine bulbosa (Mill.) Urgan (Iridaceae) from the Campus of the University of Kerala is studied. It showed n = 6 and 2n= 12. The somatic complement consists of one pair of very long heterocentric chromosomes, a pair of medium-sized M chromosomes and 4 pairs of very small M chromosomes. The heterocentric long chromosomes and the medium-sized M chromosomes showed slight differences in size between the members of a pair. It is suggested that the heterocentric long pair of chromosomes have evolved as a result of simultaneous multiple breaks and fusions between a pair of A chromosomes and a pair of SAT-chromosomes. The size difference between the two medium-sized M chromosomes is suggested to be result of a small interstitial deficiency.
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