The Effects of Proline and Salicylic Acid Applications on Yield and Plant Growth in Green Onion (Allium cepa L.) Cultivation
Abstract views: 90
/ 
PDF downloads: 30
DOI:
https://doi.org/10.5281/zenodo.15082920Keywords:
Green onion, salicylic acid, proline, growth parametersAbstract
This study was conducted to determine the effects of salicylic acid (SA) and proline (PR) applications on the growth and development of green onions. The experiment was carried out according to a randomized block design in an unheated glass greenhouse at Van Yuzuncu Yil University. Proline (50 ppm and 100 ppm) and salicylic acid (0.5 mM and 1.0 mM) were applied individually and in combination. Plant height, root length, stem diameter, number of leaves, total fresh and dry weight, and SPAD values were examined. The highest plant height (27.26 cm) was obtained with the PR2+SA1 combination, surpassing individual treatments. PR1 (16.57 cm) and SA2 (16.03 cm) yielded the highest root length; PR1+SA1 (5.62 mm) had the greatest stem diameter; PR2+SA1 (146.67 g) and PR1 (142.00 g) provided the highest fresh weight, whereas PR2+SA1 (19.84 g) led to the maximum dry weight. The highest SPAD value (89.73), indicating chlorophyll content, was recorded with SA2 application. The findings reveal that combinations of PR and SA positively influence green onion growth and may increase yield, suggesting further studies on optimal doses under grower conditions are warranted.
References
Ali, Q., Ashraf, M., Shahbaz, M., 2007. Amelioration of salt stress in maize (Zea mays L.) by exogenous proline application: Growth and photosynthesis. Pakistan Journal of Botany, 39(3), 577–587.
Ashraf, M., Foolad, M.R., 2007. Roles of glycine betaine and proline in improving plant abiotic stress resistance. Environmental and Experimental Botany, 59(2): 206-216.
Barros, J., Silva, A., Fernandes, L., 2019. Effects of salicylic acid and silicon applications on water use efficiency in cotton plants. Journal of Plant Physiology, 234: 14–22.
Brewster, J. L., 2008. Onions and Other Vegetable Alliums. CABI.
FAO, 2023. Food and Agriculture Organization Statistical Database. (http://www.fao.org) (Accessed: 10.09.2024).
Griffiths, G., Trueman, L., Crowther, T., Thomas, B., Smith, B., 2002. Onions a global benefit to health. Phytotherapy Research, 16(7): 603-615.
Hadid, M.L., Ramadan, K.M., El-Beltagı, H. S., Ramadan, A.A., El-Metwally, I.M., Shalaby, T.A., Saudy, H.S., 2023. Modulating the antioxidant defense systems and nutrients content by proline for higher yielding of wheat under water deficit. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 51(3): 13291.
Hayat, S., Hayat, Q., Alyemeni, M.N., Wani, A.S., Pichtel, J., Ahmad, A., 2012. Role of proline under changing environments: A review. Plant Signaling & Behavior, 7(11): 1456-1466.
Jayakumar, K., Jaleel, C.A., Azooz, M.M., Panneerselvam, R., 2014. Impact of salicylic acid on plant growth and development. Environmental and Experimental Botany, 90: 20–25.
Khan, M.I.R., Fatma, M., Per, T.S., Anjum, N.A., Khan, N.A., 2015. Salicylic acid-induced abiotic stress tolerance and underlying mechanisms in plants. Frontiers in Plant Science, 6: 462.
Khan, W., Prithiviraj, B., Smith, D. L., 2003. Photosynthetic responses of corn and soybean to foliar application of salicylates. Journal of Plant Physiology, 160(5): 485–492.
Khedr, A.H.A., Abbas, M.A., Wahid, A.A.A., Quick, W.P., Abogadallah, G.M., 2003. Proline induces the expression of salt stress responsive proteins and may improve the adaptation of Pancratium maritimum L. to salt stress. Journal of Experimental Botany, 54(392): 2553–2562.
Noreen, S., Faiz, S., Akhter, M. S., Shah, K. H., 2019. Influence of osmoprotectants to ameliorate salt stress in sunflower (Helianthus annuus L.). Sarhad Journal of Agriculture, 35(4): 1316–1325.
Shah, J., 2003. The salicylic acid loop in plant defense. Current Opinion in Plant Biology, 6(4): 365-371.
Sharma, P., Jha, A.B., Dubey, R.S., Pessarakli, M., 2012 Reactive oxygen species, oxidative damage, and antioxidative defense mechanism in plants under stressful conditions. Journal of Botany, 1-26.
Szabados, L., Savouré, A., 2010. Proline: a multifunctional amino acid. Trends in Plant Science, 15(2): 89-97.
Şensoy, S., Türkmen, Ö., Kabay, T., 2001. Değişik arpacık iriliği dikim sıklığı ve derinliklerinin Van koşullarında ısıtmasız cam serada yetiştirilen yeşil soğan verimi üzerine etkileri. 6. Ulusal Seracılık Sempozyumu, Muğla, Turkey, s.155-159.
TÜİK, 2023. Türkiye İstatistik Kurumu Tarım Verileri (https://www.tuik.gov.tr.) (Erişim tarihi: 10.09.2024)
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 The copyright of the published article belongs to its author.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
The journal is licensed under a 