Document Type : Original Article


1 Young Researchers ans Elite Club, Islamic Azad University, Jiroft Branch, Iran

2 Department of Horticultural Sciences, Islamic Azad University, of Jiroft, Iran

3 Department of Horticultural Sciences, Shahrood University, of Shahrood, Iran


The poinsettia's species name pulcherrima means "most beautiful" and that it is! Poinsettia's brilliant red floral display held against rich green foliage has made this unlikely species a holiday favorite. Its appealing presentation of the traditional Christmas colors has so endeared poinsettia that it is now second only to the Christmas tree as the most popular holiday plant. Studies have shown that rooting substrate is one of the effective factors at rooting of hard rhizogenetic plant such as poinsettia. The purpose ofthis studyis todetermine an appropriate concentration of salicylic acid (SA) on rooting of poinsettia. Present study showed that there was a great variation in most of the measured characters at P< 0.05 percent level. The obtained results show that salicylic acid treatments have caused the increase of percent of rooting. The use of Salicylic acid caused a positive effect on rooting. The callus percentage was obtained in control and 400 treatments. This study shows that plant growth regulators salicylic acid have a profound influence on rooting of poinsettia.


Anonymous, S (1978). The Wealth of India, council of scientific and industrial research, New Delhi, India. 3: 224-230.
Blythe, E.K., Sibley, J.L., Ruter, J.M and Tilt, K.M (2004). Cutting propagation of foliage crops using a foliar application of auxin. Scientia Hort. 103: 31-37.
Berthon, J.Y., Battraw, M.J., Gaspar, T and Boyer, N (1993). Early test using phenolic compounds and peroxidase activitiy to improve in Vitro rooting of Sequoiadendr on giganteum Lindl. Buchholz. Soocieete Botanique. 24: 7-13.
Bojarczuk, T and Jankiewicz L.S (1975). Influence of phenolic substances on rooting of softwood cuttings of Populus alba L., and P. canescens Sm. Acta Agrobotanica. 28: 121-129.
De Klerk, G.J., Marinova, S., Rouf, S and Ter-Brugge, J (1997). Salicylic acid affects rooting of apple microcuttings by enhancement of oxidation of auxin. Acta Horticulturae. 447: 247-248.
Gaspar, T.H., Kevers ,C., Hausman, J.F., Berthon, J.Y and Ripetti, V (1992). Practical uses of peroxidase activity as a predictive marker of rooting performance of micropropagated shoots. Agronomie. 12: 757-765.
Hartmann, H.T., Kester, D.E., Davies, F.T and Geneve, R.L (2002). Plant Propagation, Principles and Practices. 7 nd edn. Prentice Hall, New Jersey. 880 pp.
Kling, G.J and Meyer, M.M (1983). Effects of phenolic compounds and indolacetic acid on adventitious root initiation in cuttings of Phaseolus aureus, Acer saccharinum and Acer griseum. Hort Science. 18(3):352-354.
Morsink, W.A.G and Smith, V.G (1975). The effect of some monohydroxybenzoic and dihydrobenzoic acids as auxin synergists on rooting softwood cuttings of basswood (Tilia americana L.) under mist.
Canadian J Forest Rese. 5: 500-502.
Raskin, I (1992). Salicylate-a new plant hormone. Plant Physiology. 99: 799-803.
Salehi Sardoei, A., Sarhadi, H., rahbarian, P., Rohany Yazdi, M., Arbabi, M and Jahantigh. M (2013). Effect of Plant Growth Regulators on Rooting of Henna (Lawsonia inermis L.). International journal of Advanced Biological and Biomedical Research. 1(11): 1466-1470.
Smith, D.R and Thorpe, T.A (1977). Root initiation in cuttings of Pinus radiata seedlings:effects of aromatic amino acids and simple phenylpropanoids. Botanical Gazette. 138(4): 434-437.
Van Der- Krieken, W.M., Kodde, J., Visser, M.H.M., Tsardakas, D., Blakmeer, A., De Groot, K and Leegstra, L (1997). Increased induction of adventitious rooting by slow release auxins and elicitors, In: Biology of Root Formation and Development, 2nd edition. Edited by Altman, Y and Waisel Y, Plenum Pres, New York. pp. 95-104