Document Type: Research Paper


1 Ornamental Plants Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Mahallat, Iran.

2 Assistant professor, Ornamental Plants Research Center, Horticultural Sciences Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Mahallat, Iran.


important cut flowers in tropical and sub tropical areas of the world and has the seventh rate of production between all cut flowers of Iran. In order to investigate different effects of storage temperatures (8 weeks at 4 °C, 4 weeks at 4 °C + 4 weeks at 20 °C, 8 weeks at 12 °C, 4 weeks at 12 °C+ 4 weeks at 20 °C and 8 week at 20 °C) and different concentrations of gibberellic acid (0, 150 and 300 ppm) on quantitative characteristics of tuberose ‘Double’, a factorial experiment was carried out in a Randomized Complete Block Design with three replications. The effects of treatments were investigated on fresh and dry weight, height and number of flower stems, length of spike, speed of germination and flowering, weight and diameter of florets, number and weight of bulbs, and flower longevity. Qualitative and quantitative investigation of growth and flowering indices showed that the highest number of stems was recorded at 20 oC storage temperature, which was 20% higher than that at 4 oC storage temperature. Stem weight showed a significant correlation with most growth parameters. The most important effect of studied treatments was observed on growth speed. Speed of bulbs germination was affected only by storage temperatures (P<0.001), while higher GA3 concentration decreased both germination speed (P<0.05) and flowering speed (P<0.001). Finally, we suggested that the best treatment was storing bulbs for 4 weeks at 12°C + 4 weeks at 20 °C before cultivation and GA3 treatment did not have any significant effects on growth factors of tuberose.

Graphical Abstract


For improving quality of Polianthes tuberosa, different storage temperatures and GA3 concentrationswere applied.

Adjusting storage temperature increased speed of germination.

Higher concentration of GA3 increased the time from germination to flowering.

Best treatment was storing bulbs for 4 weeks at 12 °C + 4 weeks at 20 °C before cultivation.


Abbasi, J. 2009. Effects of gibberellic acid and benzyl adenine on stem height and vase life of polianthes (Polianthes tuberosa L.). M.Sc. thesis. University of Guilan.

Akbari, R. and Tehranifar, A. 2009. Effect of time and temperature of storage on vegetative and reproductive growth in tuberose (Polianthes tuberosa L.) Journal of Plant Production, 16(3): 119-133.

Al-khassawneh, N.M., Karam, N.S. and Shibli, R.A. 2006. Growth and flowering of black iris (Iris nigricans Dinsm.). Flowering treatment with plant growth regulators. Scientia Horticulturae, 107 (2): 187-193.

Bañón, S., Ortuño, A. and Del Río, J.A. 1997. Influence of ethylene on apex development and mobilization of soluble saccharides in the corm of Liatris. Biologia Plantarum, 39(2): 197-206.

Bhosale, N., Barad, A.V. and Bhosale, N. 2014. Effect of storage period and GA3 soaking of bulbs on growth and flowering of tuberose (Polianthes tuberosa L.) cv. ‘Double’. HortFlora Research Spectrum (HRS), 3(2): 154-157.

Chang, S.T., Chena, W.S., Koshiokab, M., Manderc, L.N., Huangd, K.L. and Du, B.S. 2001. Gibberellins in relation to flowering in Polianthes tuberosa. Physiologia Plantarum, 112: 429–432.

Dhua, R.S., Ghosh, S.K., Mitra, S.K., Yadav, L.P. and Bose, T.K. 1987. Effect of bulb size, temperature treatment of bulbs and chemicals on growth and flower production in tuberose (Polianthes tuberosa L.) Acta Horticulturae, 205: 121-128.

Divija, M. P. and Singh, J. N. 2003. Effect of GA3 and IAA on growth, flowering and bulb production of tuberose (Polianthes tuberosa L.) cv. ‘Single’. Banaras Hindu University, India, 235-239.

Ehlers, J.L., Jansen van Vuuren, P.J. and Morey, L. 2003. Influence of induced dormancy and bulb storage temperature on flowering of Veltheimia bracteata ‘Lemon Flame’. Acta Horticulturae, 624: 117-121.

Hertogh, A.D. and Nard, M.L. 1993. The physiology of flower bulbs. A comprehensive treatise on the physiology and utilization of ornamental flowering bulbous and tuberous plants. Elsevier Science Publishers BV.‏

Huang, K.L., Miyajima, I. and Okubo, H. 1995. Effects of low temperature on flowering in tuberose (Polianthes tuberosa L.). Journal of the Faculty of Agriculture-Kyushu University (Japan), 39 (3-4): 105-113.

Huang, K.L. and Okubo, H. 1995. Flowering control of tuberose (Polianthes tuberosa L.) in subtropical conditions. Journal of the Faculty of Agriculture-Kyushu University (Japan). 39 (3-4): 115-124.

Jana, B.K. and Biswas. B. 1982. Growth regulators on tuberose. South Indian Horticulture. 30: 163- 165.

Jowkar, M.M. and Salehi, H. 2006. The effects of different preservative solutions on the vase life of cut tuberose (Polianthes tuberosa L.) cv. ‘Gpldoroshte- Mahallat’.  Journal of Science and Technology of Agriculture and Natural Resources. 10: 306-309.

Kioshi, O. 2003. Effects of gibberelline and benzyl adenin on dormancy and flowering of Lilium speciosum. Kanagawa Horticultural Experimental Station, Ninomiya, Nakagun, Kanagawa (Japan). pp: 259 - 301.

Kumar J., Singh, T. and Pal, K. 2011. Effect of GA3 and VAM on growth and flowering of tuberose (Polianthes tuberosa L.) cv. ‘Double’. Agricultural Science Digest, 31 (4): 289 – 292.

Mukhopadhydy, A. and Bankar, G.J. 1983. Regulation of growth and flowering in Polianthes tuberosa L. with gibberellic acid and ethrel. Scientia Horticulturae, 19: 149-152.

Nagar, P.K. 1995. Changes in abscisic acid, phenols and indoleacetic acid in bulbs of tuberose (Polianthes tuberosa L.) during dormancy and sprouting. Scientia Horticulturae, 63 (1-2): 77-82.

Nagarja, G.S., Gowda, J.V.N. and Farooqui, A. 1999. Effect of growth regulators on growth and flowering of tuberose cv ‘Single’. Karantaka Journal of Agricultural Science (India), 12: 236- 238.

Paz, M.P., Criley, R.S., Kuehny, J. and Mc Clure, G. 2003. Effects of rhizome storage time and temperature on growth and carbohydrate content of ornamental ginger. Acta Horticulturae, 624: 103-109.

Prreeti, H. and Gogoi, S. 1997. Effects of preplant chemical treatment of bulbs on growth and flowering of Polianthes tuberosa cv. ‘Single’. Annals of Biology, 13: 145-149.

Ram, R., Mukherjee, D. and Mannuja, S. 2002. Plant growth regulators affect the development of both corms and cormels in Gladiolus. Scientia Horticulturae, 37: 343-347.

Rammamurthy, J., Venkataraman, S., Meera, R., Prasad, S., Chiristina, A.J.M. and Devi, P. 2010. Phytochemical investigation of Polianthes tuberosa. International Journal of PharmTech Research, 2: 1204-1206.

Rani, P. and Singh, P. 2013. Impact of gibberellic acid pretreatment on growth and flowering of tuberose (Polianthes tuberosa L.) cv. ‘Prajwal’. Journal of Tropical Plant Physiology, 5: 33-41.

Rudnicki, R.M., Novak, J. and Saniewski, M. 1976. The effect of gibberellic acid on sprouting and flowering of some tulip cultivars. Scientia Horticulturae, 4: 387-397. 

Sable, P.B., Ransingh, U.R. and Waskar, D.P. 2015. Effect of foliar application of plant growth regulators on growth and flower quality of gladiolus cv. ‘HB Pitt’. Journal of Horticulture, 2(3): 141-143.

Sajjad, Y., Jaskani, M.J., Qasim, M., Mehmood, A., Ahmad, N. and Akhtar, G. 2015. Pre-plant soaking of corms in growth regulators influences the multiple sprouting, floral and corm associated traits in Gladiolus grandiflorus L. Journal of Agricultural Science, 7(9): 173-181.

Shillo, R. 1992. The tuber community holds the answer to flowering problems in Polianthes tuberosa. In: VI International Symposium on Flower Bulbs, 325: 139-148.

Singh, K. and Arora, J.S. 2000. Effect of harvesting stages, sucrose, BAP and GA3 on bud opening and vase life of tuberose. Journal of Ornamental Horticulture, 3(2): 111-113.

Solano, E. and Patricia Feria, T. 2007. Ecological niche modeling and geographic distribution of the genus Polianthes L. (Agavaceae) in Mexico: using niche modeling to improve assessments of risk status. Biodiversity and Conservation, 16: 1885–1900.