- Abdul Jaleel, C., Manivannan, P., Sankar, B., Kishorekumar, A., Sankari, S. and Panneerselvam, R., 2007. Paclobutrazol enhances photosynthesis and ajmalicine production in Catharanthus roseus. Process Biochemistry, 42: 1566-1570.
- Ahmadi, N., Zeynali, H. and Lari, H., 2012. Effect of salinity stress and salicylic acid on quantitative and qualitative traits of saffron. National Convention on Herbal Medicine in Traditional Lifestyle: 69.
- AL-Khassawneh, N.M., Karam, N.S. and Shibli, R.A., 2006. Growth and flowering of black iris (Iris nigricans Dinsm) following treatment with plant growth regulators. Scientia Horticulture, 107: 187-193.
- Arnon, A.N., 1967. Metod of extraction of chlorophyll in the plants. Agronomy Journal, 23: 112-121.
- Barnes, A.M., Walser, R.H. and Davis, T.D., 1989. Anatomy of Zea mays and Glysine max seedlings treated with triazole plant growth regulators. Biologia Plantarum, 31: 370-375.
- Bina, A., 2002. Effect of temperature and gibberellin on local saffron landraces in cities of Quaen. Birjand and Gonabad. First Saffron Festival, Quaen, 11-12 November: 25.
- Chang, Y. and Sung, F., 2000. Effect of gibberellic acid and dormancy breaking chemicals on flower development of Rhododendron pulchrum Sweet and R. scabrum Don. Scientia Horticulturae, 83: 331-337.
- Chen, Y., Zhang, H., Tian, X., Zhao, C., Cai, L., Liu, Y., Jia, L., Yin, H.X. and Chen, C., 2008. Antioxidant potential of crocins and ethanol extracts of Gardenia jasminoides ELLIS and Crocus sativus L.: A relationship investigation between antioxidant activity and crocin contents. Food Chemistry, 109: 484-492.
- Chrungoo, N.K. and Farooq, S., 1984. Influence of GA and NAA on the yield and growth of saffron. Indian Journal of Plant Physiology, 27: 201-205.
- Devis, K.N., Vyas, A.K., Singh, M.S. and Singh, N.G., 2011. Effect of bioregulators on growth, yield and chemical constituents of soybean (Glycine max). Journal of Agricultural Science, 3: 151-159.
- Dhua, R.S., Ghosh, S.K., Mitra, S.K., Yadav, L.P. and Bose, T.K., 2005. Effect of bulb size, temperature treatment of bulbs and chemicals on growth and flower production in tuberose. Acta Horticulture, 205: 121-128.
- Du Toit, E.S., Robbertse, P.J. and Niederwieser, J.G., 2004. Plant carbohydrate partitioning of Lachenalia cv. Ronina during bulb production. Scientia Horticulturae, 102: 433-440.
- Kanakis, C.D., Tarantilis, P.A., Tajmir-Riahi, H.A. and Polissiou, M.G., 2007. Crocetin, dimethylcrocetin, and safranal bind human serum albumin: Stability and antioxidative properties. Jornal of Agriculture Food Chemistry, 55: 970-977.
- Fletcher, R., Sankhla, N. and Davis, T., 2000. Triazoles as plant growth regulators and stress protectants. Horticultural Reviews, 24: 55-122.
- Grilli-Caiola, M., 2004. Saffron reproduction Biology. Acta Horticulture, 650: 25-39.
- Hartman, H., Kester, D. and Davis, J., 1990. Plant Propagation: Principles and Practices. Prentices-Englewood Cliffs, NJ, 928p.
- Martín-Mex, R., Vergara-Yoisura, R., Nexticapán-Garcés, A. and Larqué-Saavedra, A., 2010. Application of low concentrations of salicylic acid increases the number of flowers in Petunia hibrida. Agrociencia, 44: 773-778.
- Monselise, S.P. and Halevy, A.H., 2011. Effects of gibberellin and Amo-1618 on growth, dry-matter accumulation, chlorophyll content and peroxidase activity of citrus seedlings. American Journal of Botany, 49(4): 405-412.
- Muchopadhyay, A. and Banker, G.J., 1983. Regulation of growth and flowering in Polianthes tuberosa L. with gibberelic acid on ethrel spray. Horticulture Science, 19: 149-152.
- Namin, M.H., Ebrahimzadeh, H., Ghareyazie, B., Radjabian, T. and Namin, H.H., 2010. Initiation and origin of stigma-like structures (SLS) on ovary and style explants of saffron in tissue culture. Acta Biologica Cracoviensia Series Botanica, 52: 55-60.
- Plessner, O., Ziv, M. and Negbi, M., 1990. In vitro corm production in the saffron crocus (Crocus sativus L.). Plant Cell Tissue Organ Culture, 20: 89-94.
- Preeti, H., Gogoi, S., Mazumder, A. and Hatibarua, P., 1997. Effect of pre-plant chemical treatment of bulbs on growth and flowering of tuberose cv. single. Annals of Biology of Ludhaiana, 13(1): 145-149.
- Ramaswamy, N., Paulraj, C. and Choockalingam, P., 1979. Studies on the influence of growth regulators on flowering and yield of tuberose (Polianthes tuberosa L.). Annamalai University of Agricultural Research, 7: 29-33.
- Ranwala, A. and William, M., 2008. Gibberellin-mediated changes in carbohydrate metabolism during flower stalk elongation in tulips. Plant Growth Regulators, 55: 241-248.
- Rossini pinto, A.C., Rodrigues, T.D.J.D., Leits, I.C. and Barbosa, J.C., 2005. Growth retardants on development and ornamental quality of potted Zinnia elegans Jacq. Scientia Agricola, 62: 337-345.
- Rubio- Moraga, A., Trapero-Mozos, A., Gemez-Gemez, L. and Ahrazem, O., 2010. Intersimple sequence repeat markers for molecular characterization of Crocus cartwrightianus cv. albus. Industrial Crops and Products, 32: 147-151.
- Srivastava, N.K. and Srivastava, A.K., 2007. Influence of gibberellic acid on 14CO2 metabolism, growth, and production of alkaloids in Catharanthus roseus. Photosynthetica, 45: 156-160.
- Shanks, J.B., 1972. Chemical control of growth and flowering in Hibiscus. HortScience, 7: 574.
- Shekari, F., Ebrahimzadeh, A. and Esmailpour, B., 2005. Plant Growth Regulators in Agriculture and Horticulture (translation), Zanjan University Press, 250p.
- Tolbert, N. E., 1960. 2-chloroethyl trimethyl ammonium chloride and related compounds as plant growth substances. II. Effect on growth of wheat. Plant Physiology 35: 380-385.
- Umrao, V.K., Sharma, V. and Kumar, B., 2007. Influence of gibberellic acid spraying on gladiolus cv. Rose Delight. Progressive Agriculture, 7(1&2): 187-188.
- Whipker, B.E. and McCall, I., 2000. Response of potted sunflower cultivars to daminozide foliar sprays and paclobutrazol drenches. HortTechnology, 10: 209-211.
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