Summary
Tetraploidy has been induced inCatharanthus roseus by treatment with colchicine. These tetraploids are more vigorous in their growth and have bigger flowers, larger stomata than the normal diploids.
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Janaki Ammal, E.K., Bezbaruah, H.P. Induced tetraploidy inCatharanthus roseus (L) G. Don. Proc. Indian Acad. Sci. 57, 339–342 (1963). https://doi.org/10.1007/BF03052059
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DOI: https://doi.org/10.1007/BF03052059