Abstract
Dodecaploid (12x) Solanum nigrum attained the highest level of ploidy in this genus with the help of colchicine. Cytomorphological studies have shown the colchiploid to have reduced height but larger, leathery leaves with broader stomata. The berries were bigger with larger and more numerous seeds in them. Pollen were bigger yet mostly fertile (85%). The induced dodecaploid (12x) plant showed diploid like meiosis which was unexpected at such a high level of autoploidy.
