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29. Kulkarni, M.G., Sparg, S.G., Van Staden, J. (2006). Dark conditioning, cold stratification and a smoke-derived compound enhance the germination of Eucomis autumnalis subsp. autumnalis seeds. South African Journal of Botany, 72, 157-162. [DOI:10.1016/j.sajb.2005.06.006]

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35. Stirk, W.A., Novak, M.S., Staden van, J. (2003). Cytokinins in macroalgae. Plant Growth Regulation, 41, 13-24. [DOI:10.1023/A:1027376507197]

36. Stirk, W., Tarkowska, D., Ture Cova, V., Strnad, M., Van staden, J. (2014). Abscisic acid, gibberellins and brassinosteroids in Kelpak, a commercial seaweed extractmade from Ecklonia maxima. Journal of Applied Phycology, 26, 561-567. [DOI:10.1007/s10811-013-0062-z]

37. Tuhy, L., Chowanska, J., Chojnacka, K. (2013). Seaweed extracts as biostimulants of plant growth. Chemik Journal, 67(7), 636-641.

38. Wang, Z., Pote, J., Huang, B. (2003). Responses of cytokinins, antioxidant enzymes, and lipid peroxidation in shoots of creeping bentgrass to high root-zone temperatures. Journal of the American Society for Horticultural Science, 128: 648-655. [DOI:10.21273/JASHS.128.5.0648]

39. Zhang, Z., Ervin, E.H. (2004). Cytokinin containing seaweed and humic acid extracts associated with creeping bentgrass leaf cytokinins and drought resistance .Crop Science, 44, 10- 15. [DOI:10.2135/cropsci2004.1737]