Acta Scientific Agriculture (ASAG)(ISSN: 2581-365X)

Research Article Volume 4 Issue 11

Dwarfing Responses of Leonotis leonurus (L.) R.Br. Lamiaceae Using Foliar Growth Regulator Applications to Induce Compactness in Flowering Potted Plants

Khanyisa Boyce, Charles P Laubscher and Mack A Moyo*

Department of Horticultural Sciences, Faculty of Applied Sciences, Cape Peninsula University of Technology, South Africa

*Corresponding Author: Mack A Moyo, Department of Horticultural Sciences, Faculty of Applied Sciences, Cape Peninsula University of Technology, South Africa.

Received: September 23, 2020; Published: October 21, 2020

×

Abstract

  The insatiable demand for novel floral forms in the ornamental horticulture industry continues to drive the search for such plant species, particularly in biodiversity-rich regions such as South Africa. The aim of the present study was to evaluate the effectiveness of Cycocel®, a plant growth retardant, in manipulating growth and compactness in Leonotis leonurus, a plant with potential high ornamental value in the potted flower industry. Application of Cycocel®, especially at a concentration of 4 mg/L significantly reduced both height and plant width of L. leonurus plants growing in a soilless hydro culture system. In addition, application of the growth retardant had a significant influence on increasing the shoot proliferation in L. leonurus plants. The number of new shoots produced in week 6 of the 8-week growing period was about threefold higher compared to the control. The reduction in height and width observed in the present study may be due to the interference with key enzymes involved in the gibberellin biosynthesis pathway. Overall, application of Cycocel® had the desired effect in controlling growth parameters in L. leonurus plants, thereby improving compactness and enhancing its commercial value in the flowering potted plant market.

Keywords: Axillary Shoots; Cycocel®; Hydroponics; Ornamental Horticulture; Plant Growth Retardant

×

References

  1. Fahn A. “Secretory tissues in vascular plants”. The new Phytologist 108 (1988): 229-257.
  2. Speight WJ. “South Africa’s medicininal herbs”. 126 (1931): 478-479.
  3. Barzilay A., et al. “Minigladiolus as a flowering pot plant”. Scientia Horticulturae 49 (1992): 117-124.
  4. Grubber H. “Growing the hallucinogens”. Berkley, Califonia: 20th Century Alchemist (1991).
  5. Menhenett R. “Comparison of new triazole retardant paclobutrazol (PP 333) with ancymidol, chlorphonium chloride, daminozide and piproctanyl bromide, on stem extension and inflorescence development in Chrysanthemum morifolium Ramat”. Scientia Horticulturae 24 (1984): 349-358.
  6. Alem P., et al. “Controlled water deficit as an alternative to plant growth retardants for regulation of Poinsettia stem elongation”. HortScience 50 (2015): 565-569.
  7. Latimer JG., et al. “Using plant growth regulators on containerized herbaceous perennials”. Virginia Cooperative Extension 430 (2001): 103.
  8. Cathy H M. “Physiology of growth retarding chemicals”. Annual Review on Plant Physiology 15 (1964): 271-302.
  9. Ellabban HM. “Effect of Cycocel and spacings on the growth and volatile oil of Cymbopogon citratus”. Scientia Horticulturae 8 (1978): 237-242.
  10. Harris D. “Hydroponics: The complete guide to gardening without soil, 1ST edition”. New Holland Publishing (1992).
  11. Steel RGD and Torrie JH. Principles and procedures of statistics: A biometrical approach, Second Edition. McGraw Hill, New York (1980).
  12. Moyo M., et al. “Plant biotechnology in South Africa: Micropropagation research endeavours, prospects and challenges”. South African Journal of Botany 77 (2011): 996-1011.
  13. Bester C., et al. “Development of new floriculture crops in South Africa”. Acta Horticulturae 813 (2009): 67-71.
  14. Marosz A and Matysiak B. “Influence of growth retardants on growth and flower bud formation in Rhododendron and azalea”. Dendroiology 54 (2005): 35-40.
  15. Meijón M., et al. “Improvement of compactness and floral quality in azalea by means of application of plant growth regulators”. Scientia Horticulturae 119 (2009): 169-176.
  16. El-Mokadem HE and Hadia HA. “Induction of dwarfism in Encelia farinose by cycocel and evaluation of regenerants using RAPD and ISSR markers”. Australian Journal of Basic and Applied Sciences 2 (2008): 331-342.
  17. Rajala A., et al. “Effects of applying stem-shortening plant growth regulators to leaves on root elongation by seedlings of wheat, oat and barley: mediation by ethylene”. Plant Growth Regulators 38 (2002): 51-59.
  18. Teto AA., et al. “Paclobutrazol retards vegetative growth in hydroponically-cultured Leonotis leonurus (L.) R.Br. Lamiaceae for a multipurpose flowering potted plant”. South African Journal of Botany 106 (2016): 67-70.
  19. Basra AS. “Plant growth regulators in agriculture and horticulture. Their role and commercial uses”. The Haworth Press inc. Binghamton, NY (2000).
  20. Bird RE and Conner JL. “Container grown azalea response to sumagic sprays”. In: Proceedings of SNA Research Conference 44 (1999): 274-276.
  21. Carvalho SMP., et al. “Possibilities for producing compact floricultural crops”. Wageningen. Report (2008): 173.
  22. Martin GC. “Apical dominance”. Horticultural Science 22 (1987): 824-833.
  23. Hwang I and Sakakibara H. “Cytokinin biosynthesis and perception”. Physiologia Plantarum 126 (2006): 528-538.
  24. Bailey DA and Miller WB. “Poinsettia developmental and pot production responses to growth retardants and irradiance”. HortScience 20 (1991): 1501-1503.
  25. Cycocel®. “Plant growth regulator. Olympic Horticultural Products”. Product Information Bulletin 301 (2008): 1-2.
  26. Cramer CS and Bridgen MP. “Growth regulator effects on plant height of potted Mussaenda ‘Qeen Sirikit’”. Horticultural Science1 (1988): 78-81.
  27. Davis TD and Andersen AS. “Growth retardants as aids in adapting new floricultural crops to pot culture”. Acta Horticulturae 252 (1989): 77-86.
  28. Deneke CF and Keever GJ. “Comparison of application methods of paclobutrazol for height control of potted tulips”. Horticultural Science12 (1992): 1329.
  29. Ecker R., et al. “Growth and flowering responses of Matthiola incana L. R. BR. to paclobutrazol”. Horticultural Science12 (1992): 1330.
  30. Gowda JVN., et al. “Effect of cycocel and maleic hydrazide on growth and flowering of dahlia (Dahlia variabilis) cv. Local”. Crop Research (H1SAR)1 (1991): 171-172.
  31. Hartman HT., et al. “Plant Propagation- Principles and Practices, 7th Edition”. New Jersey: Prentice Hall (2002).
  32. Reiser RA and Langhans RW. “Cultivation of Zantedeschia species for potted plant production”. Acta Horticulture 337 (1993): 87-94.
  33. Thohirah LA., et al. “Breaking bud dormancy and different shade levels for production of pot and cut Cucurma alismatifolia”. American Journal of Agricultural and Biological Sciences3 (2010): 385-388.
×

Citation

Citation: Mack A Moyo., et al. “Dwarfing Responses of Leonotis leonurus (L.) R.Br. Lamiaceae Using Foliar Growth Regulator Applications to Induce Compactness in Flowering Potted Plants". Acta Scientific Agriculture 4.11 (2020): 23-29.




Metrics

Acceptance rate32%
Acceptance to publication20-30 days
Impact Factor0.869

Indexed In




News and Events


  • Certification for Review
    Acta Scientific certifies the Editors/reviewers for their review done towards the assigned articles of the respective journals.
  • Submission Timeline for Upcoming Issue
    The last date for submission of articles for regular Issues is October 20, 2021.
  • Publication Certificate
    Authors will be issued a "Publication Certificate" as a mark of appreciation for publishing their work.
  • Best Article of the Issue
    The Editors will elect one Best Article after each issue release. The authors of this article will be provided with a certificate of “Best Article of the Issue”.
  • Welcoming Article Submission
    Acta Scientific delightfully welcomes active researchers for submission of articles towards the upcoming issue of respective journals.
  • Contact US