Abdulrahman, Y., Anwer, N. (2025). Efficacy Of Ga3 Primer And Foliar Spray Of Amino Acid (Tryptophan) On Growth Of Two Tulip Plant Cultivars (Tulipa Gesneriana L.). , 16(4), 223-232. doi: 10.58928/ku25.16424
Yousif Ali Abdulrahman; nezeek Muslih Anwer. "Efficacy Of Ga3 Primer And Foliar Spray Of Amino Acid (Tryptophan) On Growth Of Two Tulip Plant Cultivars (Tulipa Gesneriana L.)". , 16, 4, 2025, 223-232. doi: 10.58928/ku25.16424
Abdulrahman, Y., Anwer, N. (2025). 'Efficacy Of Ga3 Primer And Foliar Spray Of Amino Acid (Tryptophan) On Growth Of Two Tulip Plant Cultivars (Tulipa Gesneriana L.)', , 16(4), pp. 223-232. doi: 10.58928/ku25.16424
Abdulrahman, Y., Anwer, N. Efficacy Of Ga3 Primer And Foliar Spray Of Amino Acid (Tryptophan) On Growth Of Two Tulip Plant Cultivars (Tulipa Gesneriana L.). , 2025; 16(4): 223-232. doi: 10.58928/ku25.16424

Efficacy Of Ga3 Primer And Foliar Spray Of Amino Acid (Tryptophan) On Growth Of Two Tulip Plant Cultivars (Tulipa Gesneriana L.)

Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 16, Issue 4, December 2025, Pages 223-232    PDF (394.22 K)
Document Type: Research Paper
DOI: 10.58928/ku25.16424
Authors
Yousif Ali Abdulrahman1; nezeek Muslih Anwer* 2
1Department of Horticulture, College of Agricultural Engineering Sciences, Dohuk University, Duhok, IRAQ.
2university of Duhok
Abstract
The research was carried out in the lath house of Forestry Department / Agricultural Engineering Science College, University of Duhok, Duhok, Iraq, during the period from Oct., 25, 2024 to June, 1, 2025. The study aimed to investigate response of two tulip bulbs cultivars (Apeldoorn and Blushing Apeldoorn) to soaked in different gibberellic acid (GA3) primer concentrations including: (0, 200 and 400 mg L-1) for 24 hours and spray plants with amino acid (Tryptophan) at three concentrations (0, 150 and 300 mg L-1) in each 30 days till flowering. Three factors were used in the factorial Randomized Complete Block Design (RCBD) experiment. Each treatment will consist of 3 replicates and each replicate consisted of 6 pots with diameter 17 cm, The Duncan's Multiple Ranges Test was used to compare the means at a significance level of 5%. The results explained that Apeldoorn cv. was significantly superior to Blushing Apeldoorn cv. in the plant height (18.63 cm), bubllets number (3.26) and total carbohydrate content in leaves (6.25%), while Blushing Apeldoorn cv. was superior significantly in leave area (60.11 cm2), date to flower opening (148.38 days) and bulbs size (8.11 cm3). As for effect of gibberellic acid premier it noticed that the both concentrations of GA3 (200 and 400 mg L-1) appeared a significant effect on dry weight of leaves (1.91 and 1.93 g) and bulblets number (3.39 and 3.06) respectively than control, where GA3 at concentration (200 mg L-1) affect significantly on vase life of flowers (6.56 days), total chlorophyll content in leaves (69.39%) and total carbohydrates content in leaves (6.49%), on the other hand GA3 at concentration (400 mg L-1) had a significant impact on plant height (19.73 cm), and flowers stalk length (8.11 cm). Also spray of tryptophan significantly effect on some characteristics of tulip plant includes leaf area (61.72 cm2), bulblets number (3.50), total chlorophyll content (69.57%) and total carbohydrate content (6.40%) were affected significantly at 150 mg L-1 ,but dry weight of leaves (2.03g), bulb size (8.15cm3) affected with 300 mg L-1.
Keywords
tulip plant; gibberellic acid premier; tryptophan; cut flower; flowering bulbes
References
  • Singh, A. (2006). Flower crops: Cultivation and management. New India publishing.
  • Ahmad, A., Rashid, H., Sajjad, R., Mubeen, S., Ajmal, B. and Khan, M. (2014). Enhancing the vase life of tulip (Tulipa gesneriana) using various pulsing solutions of humic acid and npk. International journal of plant, animal environmental sciences, 4(2): 193-200.
  • Buschman, J. (2004). Globalisation-flower-flower bulbs-bulb flowers. In: IX International Symposium on Flower Bulbs 673. pp: 27-33.
  • De Klerk, G.-J., I. Delvallée and Paffen, A. (1992). Dormancy release of micro propagated bulblets of Lilium speciosum after long culture in soil. Hort. Science, 27(2): 147-148.
  • Horii, A., P. McCue and Shetty, K. (2007). Enhancement of seed vigor following insecticide and phenolic elicitor treatment. Bioresource technology, 98(3): 623-632.
  • Shakarami, K., R. Naderi, M. Babalar and Hamzehei, Z. (2013). The effect of different concentrations of gibberellic acid on quantitative and qualitative characteristics of three cultivars lacourtine, yokohama and red favorite tulip (Tulipa gesneriana). Journal of ornamental plants, 3(4): 251-257.
  • Nakasha, J. J., U. R. Sinniah, A. Puteh and Hassan, S. A. (2014). Potential regulatory role of gibberellic and humic acids in sprouting of Chlorophytum borivilianum The scientific world journal, 1: 1-9.
  • Baldotto, M. A., J. E. da Rocha, F. D. P. Andrade, M. P. Del Giúdice and Baldotto, L. E. B. (2016). The plant stimulant humic acid extracted from organic waste recycled by composting combined with liming and fertilization. Semina: Ciências Agrárias, 37(6): 3955-3963.
  • De, L. C. and Dhiman, K. R. (2001). Effect of leaf manures, potassium and GA3 growth flowering and longevity of Tuberose. J.Ornamental. Hort. 4(1): 50-52.
  • Davies, D. D. (1982) Physiological Aspects of Protein Turnover. Encyclopedia of Plant Physiology, 45, 481-487.
  • Amin, A. A., Awdi, M. E., Dawood, M. G., Gharib, F. A. E. and Hassan, E. A. (2014). Kinetin and Tryptophan Enhance Yield and Production Efficiency of Lupine (Lupinus termis) Plant. World Rural Observations, 6(4): 50-56.
  • Slominski, A., Semak, I., Pesarchik, A., Sweatman, T., Szczesniewski, A. and Wortsman, J. (2002). “Conversion of L-tryptophan to serotonin and melatonin in human melanoma cells”. FEBSLetters. 511(1-3): 102-106.
  • Abbas, S. H., Sohail, M., Saleem, M., Mahmood, T., Aziz, I., Qamar, M., Majeed, A. and Arif, M. (2013). Effect of L-tryptophan on plant weight and pod weight in chickpea under rain fed conditions. Sci. Tech. Dev. 32:227-280.
  • (2001).Statistical Analysis System. SAS Institute Inc., Cary, Nc. USA.
  • Das, S., Biswas, A. and Mandal, T. (2017). Studies on the Adaptability of Tulip (Tulipa sp.) in Sub-Tropics of West Bengal, India. International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Vol. 6, No. 12, pp. 2830-2834 Journal homepage: http://www.ijcmas.com.
  • Heins, R. D., Liu, B. and Runkle, E. S. (2000). Regulation of crop growth and               Development based on environmental factors. Hort. (ISHS), 514: 13-24.
  • Abdulrahman, Y. A. and Kako, S. M. (2012). Effect of growing media on growth and flowering of different Hyacinth cultivars (Hyacinthus orientalis). Journal of Agricultural Science and Technology, B 2. pp: 1100-1108.
  • Haouala, F. and Jelled, I. (2005). Growth and flowering of 4 cultivars of gladiolus in seasonal cultivation in Tunisia. PHM Revue Horticole, 467: 18-22. (Abstract).
  • Tahir, A.; K. H. Abdul Mateen; U.A. Noor and A. KH. Muhammed (2011). Response of Freesia cultivars to different growing media under Peshawar conditions, Sarhad J. Agric., 27: 43-49.
  • Kumar, R., Ahmed, N., Singh, D. B., Sharma, O. C., Lal, S. and Salmani, M. M. (2013). Enhancing blooming period and propagation coefficient of tulip Tulipa generiana using growth regulators. African Journal of Biotechnology, 12(2): 168- 174.
  • Suhayla, M. Q. M. G. (2024). Effect of Soaking the Bulbs of Two Varieties of Tulipa gesneriana and Spraying the Plants with the Organic Fertilizer Extra Plus on Growth and Yield. MSc thesis, Horticulture and Landscape Design college of Agriculture and Forestry University of Mosul. Iraq.
  • Sharma, J. R., Gupta, R. B., and Panwar, R. D. (2004). Growth, flowering and corm production of gladiolus cv. Friendship as influenced by foliar application of nutrients and growth regulators. Journal of ornamental horticulture, 7(3and4), 154-158.
  • Salih, M. M. S. (1991). Physiology of plant growth regulators. Ministry of Higher Education and Scientific Research, University of Salahuddin.
  • Tawajin, A. M. M. (1987). Ornamental Plants, Ministry of Higher Education and Scientific Research, University of Basra, Iraq.
  • Khattab, M., Shehata, A., El-Saadate, E. A. and Al-Hasni, K. (2016). Effect of glycine, methionine and tryptophan on the vegetative growth, flowering and corms production of gladiolus plant. Alex Sci Exch J, 37(4), 647-659.
  • Taher, M. S. and Abdul Hassan, R. M. (2017). The effect of spraying tryptophan and nitrogen fertilization on the growth and yield of watercress (Eruc sativa) Al-Furat Journal of Agricultural Sciences Vol. 9, Issue No.5: 554-553).
  • Sabreen, A., Mahdi, A., Abdul Kareem, A. J. and Mohammed S. (2019) Effect of Tryptophan and pheny laianime on Some Brochemical components and floral traits of(Gerbera gamesouii) cv. Gret Smoky Mountains plant. Arehives.vol.19 No.1.pp.1505-1056.
  • Raouf, Sh. Kh. (2020). The effect of the amino acid tryptophan and the timing of harvesting on some physiological characteristics, oil yield and its qualitative characteristics of the lemon grass Cymbopogon citratus Master's thesis, Kirkuk College of Agriculture.
  • AL-Saad, K. G. and Mustafa, M. k. (2020). Response of three Gladiolus cultivars spraying with different concentration of amino acid of Tryptophan and growth and yield (Gladiolus hybrida). Archive 'vol.20. No.2.
  • Dorayeerao, A. V. D. and Mokashi A. N. (2012). Growth analysis as influenced by pinching time in garland chrysanthemum (chrysanthemum coronarium). Global J. of Bio-Science & Biotechnology. 1(2): 242-247.
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