Journal of food science and technology(Iran)

Journal of food science and technology(Iran)

Effect of germination stimulants and Trichoderma harzianum on germination indicators of stored wheat seeds

Document Type : Original Article

Author
Department of Field Crops, College of Agriculture and Marshes, University of Thi-Qar, Thi-Qar, 64001, Iraq
Abstract
to study the effect of the T. harzianum and gilibric and salicylic acids on wheat seeds of the Research 22 variety, stored for one and six years. Twenty-eight Petri dishes were used, with three replicates and three treatments, in which 10 seeds of the Research 22 wheat variety, stored for one and six years, were planted. The rate of germination and mortality of seedling were as well determined in plastic pots. The germination rate’ results of the seeds of wheat by using seeds stored for one and six years respectively demonstrated significant differences between treatments. Gilibric and salicylic acids treatment in seeds stored for 1 year gave the highest average germination rate compared to the other treatments, reaching 100%, joined by the treatment of gilibric acid and a T.harzianum , where the rate of germination reached 93.33%. On the other hand, gilibric acid and T. harzianum for seed of 6-year storage had the lowest average germination percentage (10 %). The longest average length of plumule after11 days for 6-year-stored seed was 15.67 cm, in T. harzianum treatment while the lowest was found to be (4.00 cm) for the salicylic acid treatment both for the 1year-and 6 -year stored seedlings. In results the 1-year-stored seed had an avaerage of radicle length (cm) for T. harzianum treatment 9.67 cm, and the lowest average radicle length for the 1-year-stored seed was 4.00 cm for the combination treatment between T. harzianum and salicylic acid.
Keywords

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[1]                Directorate of Agricultural Statistics. (2021). Estimation of wheat and barley production. Ministry of Planning, Central Statistical Organization of Iraq.
[2]                Asif Mahamud, M., Imran, S., Paul, N.C., Rabbi, R.H.M., Jahan, N., Sarker, P., & Rhaman, M.S. (2025). An overview and current progress of gibberellic acid-mediated abiotic stress alleviation in plants. Plant, Soil and Environment, 71(7), 453-479. https://doi.org/10.17221/137/2025-PSE
[3]                Dai, L., Zhao, X., Liu, S., Keerthana, K., Vijayakanth, V., Zhi, Y., Chen, M., Que, F., Ramakrishnan, M., Ahmad, Z., & Wei, Q. (2025). Gibberellin-mediated internode elongation in grasses with a focus on bamboo: molecular pathways and regulatory networks. Frontiers in Plant Science, 16, 1665328. https://doi.org/10.3389/fpls.2025.1665328
[4]                Taiz, L., Zeiger, E., Møller, I. M., & Murphy, A. (2015). Plant Physiology and Development (6th ed.). Sinauer Associates.
[5]                Spoel, S. H., & Dong, X. (2024). Salicylic acid in plant immunity and beyond. The Plant Cell, 36(5), 1451–1464. https://doi.org/10.1093/plcell/koae058
[6]                Adss, I., Amer, G. M., Bayoumy, S. R., & Eid, A. R. (2021). Effect of Abscisic Acid, Salicylic Acid, Potassium Silicate, and Trichoderma harzianum As Biocontrol Agent to Induce the Tomato Resistance Against Early Blight Disease Caused by Alternaria solaniAlexandria Science Exchange Journal, 42(3), 773-788. https://doi.org/10.21608/asejaiqjsae.2021.19641
[7]                Silva, R. L., Pereira, F. N., & Souza, A. C. (2025). Increase of Trichoderma harzianum production using mixed-level fractional factorial design. Applied Sciences, 13(16), 9244. https://doi.org/10.3390/app13169244
[8]                Hayat, Q., Hayat, S., Irfan, M., & Ahmad, A. (2010). Effect of exogenous salicylic acid under changing environment: A review. Environmental and Experimental Botany, 68(1), 14–25. https://doi.org/10.1016/j.envexpbot.2009.12.005
[9]                Al-Rubaie, A. H., & Al-Saadi, A. H. (2013). Effect of gibberellic acid and seeding depth on germination and seedling growth of wheat (Triticum aestivum L.). Basrah Journal of Agricultural Sciences, 26(1), 123-134.
[10]             Zhong, C., Xu, H., Ye, S., Wang, S., Li, L., Zhang, S., & Wang, X. (2015). Gibberellic Acid-Stimulated Arabidopsis6 Serves as an Integrator of Gibberellin, Abscisic Acid, and Glucose Signaling during Seed Germination in ArabidopsisPlant Physiology, 169(3), 2288-2303. https://doi.org/10.1104/pp.15.00858
[11]             Weaver, R. J. (1972). Plant Growth Substances in Agriculture. W.H. Freeman and Company, San Francisco.
[12]             Amal, A. M., & Shammari, A. A. (2005). Effect of Trichoderma harzianum on growth and yield of tomato. Iraqi Journal of Agricultural Sciences, 36(4), 45-52.
[13]             Al-Maliki, A. A. T. (2009). A study of cucumber seedling death and root rot caused by the fungus Pythium aphanidermatum (Edson) Fitz and its control and integrated control potential [Master's thesis]. University of Basrah, College of Agriculture.