Response of Yield and Yield-Related Traits to Exogenous Foliar Application of 6-Benzyladenine (6-BA) in Wheat
الموضوعات : Research On Crop Ecophysiology
1 - PhD Student of Islamic Azad University of Khorasgan, Iran.
2 - Department of Agronomy and Plant Breeding, Institute of Agricultural Water, Food and Nutraceuticals, ISF. C., Islamic Azad University, Isfahan, Iran.
الکلمات المفتاحية: Keywords: Yield, yield component traits, Wheat, 6-benzyladenine,
ملخص المقالة :
Response of Yield and Yield-Related Traits to Exogenous Foliar Application of 6-Benzyladenine (6-BA) in Wheat SAYED ALI EMAMI1*, ALI SOLEYMANI2 1-PhD Student of Islamic Azad University of Khorasgan, Iran. 2- Department of Agronomy and Plant Breeding, Institute of Agricultural Water, Food and Nutraceuticals, ISF. C., Islamic Azad University, Isfahan, Iran. *Corresponding author’s E-mail: dr.s.a.emami110@gmail.com Received: 5 October 2024 Accepted: 25 January 2025 ABSTRACT Cytokinins are a class of plant hormones that play a pivotal role in regulating growth and development by promoting cell division, delaying senescence, and enhancing stress tolerance, thereby influencing key physiological processes that determine plant productivity. Wheat is a crucial crop that significantly contributes to global food security. This study investigates the effects of foliar application of the synthetic cytokinin 6-benzyladenine (6-BA) at three distinct concentrations 15, 30, and 45 ppm over two consecutive growing seasons (2016-2018) at a research farm located in Barsian village, Ziar on wheat cultivar M7318, aiming to evaluate its impact on yield and yield-related traits, including grain yield, 1000-grain weight, biological yield, harvest index, and grain weight per plant, with the objective of identifying optimal application strategies to enhance wheat. The results reveal a clear trend of increasing grain yield and 1000-grain weight with rising 6-BA concentrations, peaking at 45 ppm, though the improvement plateaus with no significant difference between 30 and 45 ppm, while biological yield significantly increases only at 45 ppm, harvest index declines at this higher dose, and grain weight per plant reaches its maximum at 30 ppm, highlighting the concentration-specific effects of 6-BA on wheat performance. These findings underscore the potential of cytokinin hormones, particularly 6-BA, in wheat cultivation as a sustainable approach to boost yield, offering a promising avenue for precision agriculture by tailoring application rates to optimize grain production and biomass allocation. Keywords: Yield, yield component traits, Wheat, 6-benzyladenine
REFERENCES
Alvi A.F., Sehar Z., Fatma M., Masood A. and Khan N.A., 2022. Strigolactone: an emerging growth regulator for developing resilience in plants. Plants, 11(19), p. 2604.
Ghaleh Z.R., Sarmast M.K. and Atashi S., 2020. 6-Benzylaminopurine (6-BA) ameliorates drought stress response in tall fescue via the influencing of biochemicals and strigolactone-signaling genes. Plant Physiology and Biochemistry, 155, pp. 877-887.
Gulzar F., Yang H., Chen J., Hassan B., Huang X. and Qiong F., 2024. 6-BA reduced yield loss under waterlogging stress by regulating the phenylpropanoid pathway in wheat. Plants, 13(14), p. 1991.
Gupta O.P., Singh A., Pandey V., Sendhil R., Khan M.K., Pandey A., Kumar S., Hamurcu M., Ram, S. and Singh G., 2024. Critical assessment of wheat biofortification for iron and zinc: a comprehensive review of conceptualization, trends, approaches, bioavailability, health impact, and policy framework. Frontiers in Nutrition, 10, p. 1310020.
Hussain, S., Chang J., Li, J., Chen L., Ahmad S., Song Z., Zhang B. and Chen X., 2025. Multifunctional role of cytokinin in horticultural crops. International Journal of Molecular Sciences, 26(3), p. 1037.
Jiang H., Zhou L.J., Gao H.N., Wang X.F., Li Z.W. Li Y.Y., 2022. The transcription factor MdMYB2 influences cold tolerance and anthocyanin accumulation by activating SUMO E3 ligase MdSIZ1 in apple. Plant Physiology, 189(4), pp. 2044-2060.
Jing F., Ding Y., Zhu M., Zhao G. Wang X., 2024. Foliar application of 6-benzyladenine after pollination improves hybrid rice seed vigor through modulating antioxidant system. Plant Growth Regulation, 102(1), pp. 99-106.
Khosravi-Nejad F., Khavari-Nejad R.A., Moradi F. Najafi F., 2022. Cytokinin and abscisic acid alleviate drought stress through changing organic acids profile, ion immolation, and fatty acid profile to improve yield of wheat (Triticum aestivum L.) cultivars. Physiology and Molecular Biology of Plants, 28(5), pp. 1119-1129.
Li, Q., Niu, C., Guo, J., Chen, G., Li, J., Sun, L., Li, W. and Li, T., 2025. Physiological regulation underlying the alleviation of cadmium stress in maize seedlings by exogenous glycerol. Scientific Reports, 15(1), p. 11156.
Mangena P., 2022. Evolving role of synthetic cytokinin 6-benzyl adenine for drought stress tolerance in soybean (Glycine max L. Merr.). Frontiers in Sustainable Food Systems, 6, p. 992581.
Mok M.C., 2019. Cytokinins and plant development—an overview. Cytokinins, pp. 155-166.
Mughal N., Shoaib N., Chen J., He Y., Fu M., Li X., He Y., Guo J., Deng J., Yang W. and Liu J., 2024. Adaptive roles of cytokinins in enhancing plant resilience and yield against environmental stressors. Chemosphere, 364, p. 143189.
Qi X., Zhuang Z., Ji X., Bian J. Peng Y., 2024. The mechanism of exogenous salicylic acid and 6-benzylaminopurine regulating the elongation of maize mesocotyl. International Journal of Molecular Sciences, 25(11), p. 6150.
Raza M.A.S., Zaheer M.S., Saleem M.F., Khan I.H., Ahmad S. Iqbal R., 2020. Drought ameliorating effect of exogenous applied cytokinin in wheat. Pakistan Journal of Agricultural Sciences, 57(3).
Shewry P.R. Hey S.J., 2015. The contribution of wheat to human diet and health. Food and Energy Security, 4(3), pp. 178-202.
Vedenicheva N. and Kosakivska I., 2024. The regulatory role of cytokinins in adaptive responses of cereal plants. Regulation of Adaptive Responses in Plants, pp. 83-110.
Wang, S., Yang, S., He, D., Yi, Y., Fu, Y., Yin, D., Zhao, H. and Xiao, C., 2022. Exogenous 6‐benzyladenine treatment alleviates cold stress in early japonica rice at booting in Northeast China. Agronomy Journal, 114(5), pp. 2905-2919.
Wang Y., Lu J.W., Ren T., Li P.F., Liu Q.X. Li X.K., 2020a. Effects of exogenous cytokinin on photosynthesis, senescence, and yield performance of inferior rice tillers grown under different nitrogen regimes. Photosynthetica, 58(1).
Wang X., Zhang J., Song J., Huang M., Cai J., Zhou Q., Dai T. Jiang D., 2020b. Abscisic acid and hydrogen peroxide are involved in drought priming‐induced drought tolerance in wheat (Triticum aestivum L.). Plant Biology, 22(6), pp. 1113-1122.
Yang D., Li Y., Shi Y., Cui Z., Luo Y., Zheng M., Chen J., Li Y., Yin Y. Wang Z., 2016. Exogenous cytokinins increase grain yield of winter wheat cultivars by improving stay-green characteristics under heat stress. PLoS One, 11(5), p. e0155437.
Zhang L., Shi X., Hou H., Lin Q., Zhu S. Wang G., 2023. 6-Benzyladenine treatment maintains storage quality of Chinese flowering cabbage by inhibiting chlorophyll degradation and enhancing antioxidant capacity. Plants, 12(2), p. 334.
Zhou Q.R., Zhao M.T., Yang L., Luan J.M., Gao Y., Huang Z.L., Ma S.Y., Fan Y.H. and Zhang, W.J., 2024. Effects of exogenous 6-BA on flag leaf physiology, yield, and quality of wheat after low temperature stress at booting stage. Ying Yong Sheng tai xue bao= The Journal of Applied Ecology, 35(6), pp. 1573-1582.
Zhu K., Ren W., Yan, J., Zhang Y., Zhang W., Xu Y., Wang Z. Yang J., 2022. Grain yield and nitrogen use efficiency are increased by exogenous cytokinin application through the improvement in root physiological traits of rice. Plant Growth Regulation, 97(1), pp. 157-169.
