Replanting is always required for banana farmers. Selecting growth retardants is impor tant for banana seedling companies. Stem apex contained many gibberellins. Seven treatments were performed onto stem apex of banana seedlings in this research. Results showed that heights of seedlings sprayed with paclobutrazol (200 mg/L), dniconazole (200 mg/L), and dniconazole + brassins (200 mg/L + 0.1 mg/L) were significantly lower than those of seedlings sprayed with water. Paclobutrazol was the ideal retardant for delaying the growth of leaf if stem apex was selected as a treated candidate. Fresh weights of seedlings of al l seven treatments were significantly less than that of control. For delaying the growth of fresh weight of banana seedlings, chlormequat chloride (200 mg/L) was the best choice. Reducing power of roots of seedlings treated with 100 ml of paclobutrazol (200 mg/L) was significantly higher than that of seedling treated with water. Chlorophyll contents of seedlings treated with growth retardants were significantly higher than that of seedlings treated with water.
Shu, H., Sun, W., Wang, Z., Yin, M., Han, Q., Zhou, Z., Dai, M., Jin, Z., Li, J. and Chang, S. (2016) The Possible Analysis for Breeding Banana Varieties with High Resistance to Typhoon. Molecular Plant Breeding, 14, 1-11.
Chang, S., Sun, W., Xu, G., Wei, Q., Li, J. and Shu, H. (2017) Enhancing Lodging Resistance of Banana Plant by Transforming 4-coumarate: CoA Ligase Gene Mu4CL15. Molecular Plant Breeding, 15, 1-11.
Brown, R.G.S., Kawaide, H., Yang, Y.Y., Rademacher, W. and Kamiya, Y. (1997) Daminozide and Prohexadione Have Similar Modes of Action as Inhibitors of Late Stages of Gibberellin Metabolism. Physiologia Plantarum, 101, 309-313.
Evans, L.T., King, R.W., Mander, L.N., Pharis, R.P. and Duncan, K.A. (1994) The Differential Effects of C-16, 17-Dihydro Gibberellins and Related Compounds on Stem Elongation and Flowering in Lolium temulentum. Planta, 193, 107-114. https://doi.org/10.1007/BF00191613
Fletcher, R.A., Gilley, A., Sankhla, N. and Davis, T.D. (1999) Triazoles as Plant Growth Regulators and Stress Protectants. In: Janick, J., Ed., Horticultural Reviews, John Wiley & Sons, Chichester, 55-138. https://doi.org/10.1002/9780470650776.ch3
Tolbert, N.E. (1960) (2-Chloroethyl)-Trimethylammonium Chloride and Related Compounds as Plant Growth Substances. I. Chemical Structure and Bioassay. The Journal of Biological Chemistry, 235, 475-479.
Tolbert, N.E. (1960) (2-Chloroethyl)-Trimethylammonium Chloride and Related Compounds as Plant Growth Substances. II. Effect on Growth of Wheat. Plant Physiology, 35, 380-385. https://doi.org/10.1104/pp.35.3.380
Zeeh, B., Konig, K.H. and Jung, J. (1974) Development of a New Plant Growth Regulator with Biological Activity Related to CCC. Kemia, Helsinki, 621-623.
Garrod, J.F., Hewitt, H.G., Copping, L.G. and Greenwood, D. (1980) A New Group of Ternary Sulphonium Growth Retardants. See Ref., 25A, 67-74.
Benveniste, P. (1986) Sterol Biosynthesis. Annual Review of Plant Physiology, 37, 275-308. https://doi.org/10.1146/annurev.pp.37.060186.001423
Hedden, P. (1990) The Action of Plant Growth Retardants at the Biochemical Level. In: Pharis, R.P. and Rood, S.B. Eds., Plant Growth Substances 1988, Springer, Berlin, Heidelberg, 322-332. https://doi.org/10.1007/978-3-642-74545-4_38
Tesfahun, W. (2018) A Review on: Response of Crops to Paclobutrazol Application. Tesfahun, Cogent Food & Agriculture, 4, Article ID: 1525169. https://doi.org/10.1080/23311932.2018.1525169
Kondhare, K.R., Hedden, P., Kettlewell, P.S., Farrell, A.D. and Monaghan, J.M. (2014) Use of the Hormone-Biosynthesis Inhibitors Fluridone and Paclobutrazol to Determine the Effects of Altered Abscisic Acid and Gibberellin Levels on Pre-Maturity α-Amylase Formation in Wheat Grains. Journal of Cereal Science, 60, 210-216. https://doi.org/10.1016/j.jcs.2014.03.001
Dewi, K., Agustina, R.Z. and Nurmalika, F. (2016) Effects of Blue Light and Paclobutrazol on Seed Germination, Vegetative Growth and Yield of Black Rice (Oryza sativa L. ‘Cempo Ireng’). Journal of Biotropia, 23, 85-96. https://doi.org/10.11598/btb.2016.23.2.478
Sumit, K., Ghatty, S., Satyanarayana, J., Guha, A., Chaitanya, B.S.K. and Reddy, A.R. (2012) Paclobutrazol Treatment as a Potential Strategy for Higher Seed and Oil Yield in Field-Grown Camelina sativa L. Crantz. BMC Research Notes, 5, 137. https://doi.org/10.1186/1756-0500-5-137
Syahputra, B.A.S., Sinniah, U.R., Rastan, S.O. and Ismail, M.R. (2013) Changes in Gibberellic Acid (GA) Content in 3 Oryza sativa due to Paclobutrazol Treatment. Journal Food Pharmaceutical Sciences, 1, 14-17.
Murashige, T. and Skoog, F. (1962) A Revised Medium for Rapid Growth and Bioassays with Tobacco Tissue Cultures. Physiologia Plantarum, 15, 473-497. https://doi.org/10.1111/j.1399-3054.1962.tb08052.x
Brian, P.W., Elson, G.W., Hemming, H.G. and Radley, M. (1954) The Plant Growth Promoting Properties of Gibberellic Acid, a Metabolic Product of the Fungus, gibberella fujikuroi. Journal of the Science of Food and Agriculture, 5, 602-612. https://doi.org/10.1002/jsfa.2740051210
Brian, P.W. and Hemming, H.G. (1955) The Effect of Gibberellic Acid on Shoot Growth and Pea Seedlings. Physiologia Plantarum, 8, 669-681. https://doi.org/10.1111/j.1399-3054.1955.tb07760.x
Phinney, B.O. (1956) Growth Response of Single-Gene Dwarf Mutants in Maize to Gibberellic Acid. Proceedings of the National Academy of Sciences of the United States of America, 42, 185-189. https://doi.org/10.1073/pnas.42.4.185
Stowe, B.B. and Yamaki, T. (1957) The History and Physiological Action of the Gibberellins. Annual Review of Plant Physiology, 8, 181-216. https://doi.org/10.1146/annurev.pp.08.060157.001145
Graebe, J.E. (1987) Gibberellin Biosynthesis and Control. Annual Review of Plant Physiology, 38, 419-465. https://doi.org/10.1146/annurev.pp.38.060187.002223
Hedden, P. and Kamiya, Y. (1997) Gibberellin Biosynthesis: Enzymes, Genes and Their Regulation. Annual Review of Plant Physiology and Plant Molecular Biology, 48, 431-460. https://doi.org/10.1146/annurev.arplant.48.1.431
Hedden, P. and Proebsting, W.M. (1999) Genetic Analysis of Gibberellin Biosynthesis. Plant Physiology, 119, 365-367. https://doi.org/10.1104/pp.119.2.365
MacMillan, J. (1997) Biosynthesis of the Gibberellin Plant Hormones. Natural Product Reports, 14, 221-243. https://doi.org/10.1039/np9971400221
Ross, J.J. (1994) Recent Advances in the Study of Gibberellin Mutants. Plant Growth Regulation, 15, 193-206. https://doi.org/10.1007/BF00029892