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Effect of paclobutrazol on physiology, growth and yield of sunflower (Helianthus annuus L.)

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Abstract

The study investigated the effect of paclobutrazol (PBZ), a gibberellin synthesis inhibitor, on common sunflower (Helianthus annuus L.) plants. Sunflower plants were treated with 10, 20, 50, 100 and 250 mg active ingredient of PBZ per plant as soil application in polybags at 12 days after sowing (DAS). PBZ treatment in sunflower plants resulted in short and compact plants with dark green leaves with increased chlorophyll and carotenoid contents over control at 56 DAS. Plant height was significantly lesser in PBZ-treated plants than in control, with no significant difference in the girth of the plants. PBZ treatment increased root volume by 90.8%, root dry weight by 62.5%, and root–shoot ratio by 82.8% in 10 and 20 mg PBZ treatment. Net photosynthesis rate (PN) and stomatal conductance (gs) were decreased in PBZ-treated plants. Days to maturity were reduced to 73 DAS in 250 mg of PBZ-treated plants as compared to control (106 DAS). 100-Seed weight and seed yield per plant increased by 25.3% and 23.6% respectively, in PBZ-treated plants over control treatment. Application of PBZ resulted in higher epicuticular wax content, fibrous root development, more root volume, and higher root–shoot ratio. These characteristics may impart drought tolerance to sunflower plants during the Kharif season. The lesser height–girth ratio may confer lodging resistance in PBZ-treated sunflower plants.

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References

  • Adil, O. S., Rahim, A., Elamin, O. M., & Bangerth, F. K. (2011). Effects of paclobutrazol (PBZ) on floral induction and associated hormonal and metabolic changes of biennially bearing mango (Mangifera indica L.) cultivars during off year. ARPN Journal of Agricultural and Biological Science, 6(2), 55–67.

    Google Scholar 

  • Arnon, D. I. (1949). Copper enzymes in isolated chloroplasts, polyphenol oxidase in Beta vulgaris. Plant Physiology, 24(1), 1–15.

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  • Barnes, A. M., Walsar, R. H., & Davis, T. D. (1989). Anatomy of Zea mays and Glycine max seedlings treated with triazole plant growth regulators. Biologia Plantarum, 31(5), 370–375.

    Article  Google Scholar 

  • Berova, M., & Zlater, Z. (2000). Physiological response and yield of paclobutrazol treated tomato plants (Lycopersicon esculentum Mill). Plant Growth Regulation, 30(2), 117–123.

    Article  CAS  Google Scholar 

  • Chaney, W. (2003). Tree growth retardants: Arborists discovery new uses for an old tool. Tree Care Industry, 14(3), 54–59.

    Google Scholar 

  • Dasoju, S., Evans, M. E., & Whipker, B. E. (1998). Paclobutrazol drenches control growth of potted sunflowers. HortTechnology, 8(2), 235–237.

    Article  Google Scholar 

  • Davis, T. D., & Curry, E. A. (1991). Chemical regulation of vegetative growth. Critical Review of Plant Sciences, 10(2), 151–188.

    Article  CAS  Google Scholar 

  • Davis, T. D., Steffens, G. L., & Sankhla, N. (1988). Triazole plant growth regulators. Horticulture Reviews, 10, 63–105.

    CAS  Google Scholar 

  • Ebercon, A., Blum, A., & Jordan, W. R. (1977). A rapid colorimetric method for epicuticular wax content of sorghum leaves. Crop Science, 17(1), 179–180.

    Article  Google Scholar 

  • Fick, G. N., & Miller, J. F. (1997). Sunflower breeding. In: Sunflower technology and production (Monograph 35). Madison: ASA, CSSA, SSSA (pp. 395–439).

  • Fletcher, R., Gilley, A., Sankhla, N., & Davis, T. (2000). Triazoles as plant growth regulators and stress protectants. Horticultural Reviews, 24, 55–137.

    CAS  Google Scholar 

  • Gao, J., Hofstra, G., & Fletcher, R. A. (1987). Anatomical changes induced by triazoles in wheat seedlings. Canadian Journal of Botany, 66(6), 1178–1185.

    Article  Google Scholar 

  • Geneve, R. L. (1990). Root formation in cuttings of English ivy treated with paclobutrazol or uniconazol. HortScience, 25(6), 709.

    Article  CAS  Google Scholar 

  • Ghaffari, M., Toorchi, M., Valizadeh, M., & Shakiba, M. R. (2012). Morpho-physiological screening of sunflower inbred lines under drought stress condition. Turkish Journal of Field Crops, 17(2), 185–190.

    Google Scholar 

  • Jordan, W. R., Shouse, P. J., Blum, A., Miller, F. R., & Monk, R. L. (1984). Environmental physiology of sorghum. II. Epicuticular wax load and cuticular transpiration. Crop Science, 24, 1168–1173.

    Article  Google Scholar 

  • Khalil, I.A. (1995). Chlorophyll and carotenoid contents in cereals as affected by growth retardants of triazole series. Cereal Research Communication, 23, 183-189.

    Google Scholar 

  • Koutroubus, S. D., & Damalass, C. A. (2015). Sunflower response to repeated foliar applications of paclobutrazol. Planta Daninha, Vicosa-MG, 33, 129–135.

    Article  Google Scholar 

  • Lichtenthaler, H. K. (1987). Chlorophyll and carotenoid, the pigments of photosynthetic biomembranes. In: Douce Rand and L. Packer (Eds.), Methods in Enzymology, Academic Press Inc., New York, 148 (pp. 352–382).

  • Pious Secondo, A. S., & Nanja Reddy, Y. A. (2019). Cytokinin improves the skin strength and seed yield of sunflower hybrid KBSH-44. Journal of Oilseeds Research, 3(1), 63–65.

    Google Scholar 

  • Porlingis, I. C., & Koukourikou-Petridou, M. (1996). Promotion of adventitious root formation in mung bean cutting by four triazol growth retardants. HortScience, 71, 573–579.

    CAS  Google Scholar 

  • Rademacher, W. (2000). Growth retardants: Effects on gibberellin biosynthesis and other metabolic pathways. Annual Review of Plant Physiology and Plant Molecular Biology, 51, 501–531.

    Article  CAS  PubMed  Google Scholar 

  • Rodriguez, D. J., Phillips, B. S., Rodriguez, R. G., & Sanchez, J. L. A. (2002). Grain yield and fatty acid composition of sunflower seed for cultivar developed under dry land condition. In J. Janick & A. Whipkey (Eds.), Trends in new crops and new uses (pp. 139–142). ASHS Press.

    Google Scholar 

  • Salisbury, F. B., & Ross, C. W. (1992). Hormones and growth regulators: Auxins and gibberellins. In: Plant Physiology (4th ed, pp. 357–372) Wadswoth Publ. Co., Calif.

  • Sarkar, J., Annamalainathan, K., Krishnakumar, R., & Jacob, J. (2015). Morphological changes in young plants of Hevea brasiliensis induced by paclobutrazol. Rubber Science, 28(1), 22–30.

    Google Scholar 

  • Sebastian, B., Alberto, G., Emilio, A. C., Jose, A. F., & Juan, A. F. (2002). Growth, development and color response of potted Dianthus caryophyllus cv Mondriaan to Paclobutrazol Treatment. Scientia Horticulturae, 1767, 1–7.

    Google Scholar 

  • Terri, W. S., & Millie, S. W. (2000). Growth retardants affect growth and flowering of Scaevola. HortScience, 35(1), 36–38.

    Article  Google Scholar 

  • USDA. (2020). Foreign Agricultural Services, Independence Avenue SW Mail Stop 1001 Washington DC (pp. 202–250).

  • Weiss, E. A. (2000). Oilseed crops (2nd ed., p. 364). Blackwell Science.

    Google Scholar 

  • Khalil, I.A. (1995). Chlorophyll and carotenoid contents in cereals as affected by growth retardants of triazole series. Cereal Research Communication, 23, 183-189.

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  1. Jayanta Sarkar

    Present address: Regional Experiment Station, Rubber Research Institute of India, Rubber Board, Grassmore, Nagrakata, West Bengal, 735 225, India

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  1. Rubber Research Institute of India, Rubber Board, Kottayam, Kerala, 686 009, India

    Jayanta Sarkar

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Sarkar, J. Effect of paclobutrazol on physiology, growth and yield of sunflower (Helianthus annuus L.). Plant Physiol. Rep. 28, 231–237 (2023). https://doi.org/10.1007/s40502-023-00729-5

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