Ketmaro, S. .; Taychasinpitak, T.; Mongkolchaiyaphruek , A. .; Wongchaochant, S. Effect of Colchicine on Increasing Pollen Viability in a Curcuma Hybrid (Curcuma Sparganifolia × C. Parvifl Ora). Agr. Nat. Resour. 2012, 46, 363-370.