Efficacy of benzyladenine for compensating the reduction in soybean productivity under low water supply


  • Hani Saber Saudy Agronomy Department, Faculty of Agriculture, Ain Shams University, P.O. Box 68–Hadayek Shoubra 11241, Cairo
  • Ibrahim Mohamed El–Metwally Botany Department, National Research Centre, P.O. Box 12622–Dokki, El–Behos St. Dokki, Cairo
  • Magdi Tawfik Abdelhamid Department, National Research Centre, P.O. Box 12622–Dokki, El–Behos St. Dokki, Cairo




deficit water, growth promoters, relative growth rate, soybean oil


Undoubtedly, drought is a negative consequence of climate change. Farmers have to deal with this issue and may be forced to irrigate their crops with less water than required, however reduction in productivity is anticipated. Thus, two–year field trials were conducted to assess the impact of irrigation regimes (60, 80 and 100% of crop evapotranspiration, denoted ET60, ET80, and ET100, respectively) and benzyladenine rates (0, 50, 100, 150 and 200 mg L?1, symbolized as BA0, BA50, BA100, BA150, BA200, respectively) on soybean. Findings clarified that the maximum increases in plant height and net assimilation rate were obtained with the interactions of ET100 or ET80 x BA200 or BA150 in both seasons. ET80 x BA200 (in both seasons) and ET100 x BA150 (in the first season) were as similar as ET100 x BA200 for enhancing pods number plant?1. Irrigation water use efficiency progressively increased with decreasing irrigation water amount and increasing benzyladenine rate. In conclusion, the reduction in seed yield due to lowering water supply up to 80% of crop evapotranspiration (with saving 20% of irrigation water) could be compensated using benzyladenine, 150 mg L?1, thus it should be involved in soybean irrigation programs.


Abernethy R, Palmer, RG, Shibles RM, Anderson IC. 1997. Histological observations ?on abscising and retained soybean flowers. Cana. J Plant Sci. 57:713–716.?
Ahmed MA, Bakhoum Gehan Sh, EL–Housini Ebtesam A, Badr Elham A. 2016. ?Alleviation of water stress on wheat by Benzyl adenine. Inter J PharmTech Res. ??9:109–119. ?
Allen RG, Pereira LS, Raes D, Smith M. 1998. Crop evapotranspiration–guidelines for ?computing crop water requirements–FAO irrigation and drainage paper 56, ?Rome, Italy. ?
AOAC. 2000. Association of Official Agriculture Chemists. Official Methods of ?Analysis 17th Ed., W. Hormitz, Washington, DC, USA.?
Ayad HS, Gamal EL–Din, KM. 2011. Effect of atomic and Benzyl adenine on growth ?and some biochemical constituents of Lupine plant (Lupinns termis L). Amer–?Euras J Agric Environ Sci. 10:519–524.?
Borges LP, Torres Junior HD, Neves TG, Cruvinel CKL, Santos PGF, Matos FS. 2014. ?Does benzyladenine application increase soybean productivity? Afr J Agric Res. ??9:2799–2804.?
Casella G (2008) Statistical Design. 1st ed. Springer, Gainesville, FL 32611–8545, ?USA.?
De Souza PI, Egli DB, Bruening WP. 1997. Water stress during seed filling and leaf ?senescence in soybean. Agron J. 89:807–812.?
Dekov I, Tsonev T, Yordanov I. 2001. Effects of water stress and high–temperature ?stress on the structure and activity of photosynthetic apparatus of Zea mays and ?Helianthus annuus. Photosynth. 38:361–366.?
Desclaux D, Roumet P. 1996. Impact of drought stress on the phenology of two ?soybean (Glycine max L. Merr) cultivars. Field Crops Res. 46:61–70.?
Dogan E, Kirnak H, Copur O. 2007. Deficit irrigation during soybean reproductive ?stages and CRPGRO–soybean simulations under semi–arid climatic conditions. ?Field Crops Res. 103:154–159.?
Doorenbos J, Pruit, WO, Aboukhaled A, Damagnez J, Dastane NG, Van Den Berg C, ?Rijtema, PE, Ashford OM, Frere M. 1977. Guidelines for predicting crop water ?requirements–FAO irrigation and drainage, Rome, 24:35–95.?
Draper NR, Smith H. 1998. Applied Regression Analysis, 3rd Ed. John Wiley & Sons, ?New York.?
El–Bially MA, Saudy HS, El–Metwally IM, Shahin MG. 2018. Efficacy of ascorbic ?acid as a cofactor for alleviating water deficit impacts and enhancing sunflower ?yield and irrigation water–use efficiency. Agric Water Manage. 208: 132–139.?
Gkaswa SL, Dubey RK, Singh S, Tiwari RC. 2014. Growth, product and quality of ?soybean (Glycine max L.) under different levels and sources of phosphorus and ?plant growth regulators in sub humid Rajasthan. Afr J Agric Res. 9:1045–1051. ?
Hassanein RA, Khattab HKI, EL–Bassiouny HMS, Sadak MS. 2005. Increasing the ?active constituents of sepals of roselle (Hibiscus sabdariffa L.) plant by applying ?gibberellic acid and benzyladenine. J App Sci Res. 1:137–146.?
Hunt R. 1982. Plant growth curves: The functional approach to plant growth analysis. ?London, Edward Arnold, p:14–46.?
Keller J, Bliesner RD. 1990. Sprinkle and Trickle Irrigation. AVI Book. Van Nostrand ?Reinhold, New York.?
Khaswa SL, Dubey RK, Singh S, Tiwari RC. 2014. Growth, productivity and quality of ?soybean (Glycine max (L.) Merr.) under different levels and sources of ?phosphorus and plant growth regulators in Subhumid Rajasthan. Afr J Agric ?Res. 9:1045–1051.?
Kim SJ, Yu DJ, Kim TC, Lee HJ. 2011. Growth and photosynthetic characteristics of ?blueberry (Vaccinium corymbosum cv. Bluecrop) under various shade levels. ?Scientia Hort. 129:486–492.?
Kokubun M, Shimada S, Takahashi M. 2001. Flower abortion caused by preanthesis ?water deficit is not attributed to impairment of pollen in soybean. Crop Sci. ??41:1517–1521.?
Mahajan S, Tuteja N. 2005. Cold, salinity and drought stresses: an overview. Arch ?Biochem Biophysics. 444:139–158.?
Minolta. 1989. Chlorophyll meter SPAD–502. Instruction manual. Osaka: Minolta Co., ?Ltd., Radiometric Instruments Operations.?
Nayyar H, Gupta D. 2006. Differential sensitivity of C3 and C4 plants to water deficit ?stress: association with oxidative stress and antioxidants. Environ Exp Bot. ??58:106–113.?
Nicolás E, Torrecillas A, DellAmico J, Alarcón JJ. 2005. Sap flow, gas exchange, and ?hydraulic conductance of young apricot trees growing under a shading net and ?different water supplies. J Plant Physiol. 162:439–447.?
Nooden ID, Santo KRS, Letham DS. 1990. Correlation of xylem sap cytokinin levels ?with monocarpic senescence in soybean. Plant Physiol. 93:33–39.?
Ohashi Y, Nakayama N, Saneoka H, Fujita K. 2006. Effects of drought stress on ?photosynthetic gas exchange, chlorophyll fluorescence and stem diameter of ?soybean plants. Biol Planta. 50:138–141.?
Ouda SA, Shreif MA, Abou Elenin R. 2010. Increasing water productivity of faba bean ?grown under deficit irrigation at middle Egypt. Fourteenth International Water ?Technology Conference, IWTC 14, Cairo, Egypt. pp:45–55. ?
Oweis T, Hachum AY. 2003. Improving water productivity in the dry areas of west ?Asia and North Africa. In KIJNE, J.W. BARKER, R. MOLDEN, D. (Eds.) ?Water productivity in agriculture: limits and opportunities for improvement. ?CAB International. pp:179–198.?
Plihalova L, Vylicilova H, Dolezal K, Zahajska L, Zatloukal M, Strand M. 2016. ?Synthesis of aromatic cytokinins for plant biotechnology. New Tech. 33:614–??624.?
Rademacher W. 2015. Plant growth regulators: Backgrounds and uses in plant ?production. J Plant Growth Regul. 34:845–872.?
Reese RN, Dybing CD, White CA, Page SM, Larson JE. 1995.
Expression of vegetative storage protein (VSP–?) in soybean raceme tissues in ?response to flower set. J Exp Bot. 46:957–964.?
Reisdorph NA, Koster KI. 1999. Progressive loss of desiccation tolerance in ?germinating pea (Pisum sativum) seeds. Physiol Planta 105:266–271. ?
Sarwat MI, EL–Sherif MH. 2007. Increasing salt tolerance in some barley genotypes ??(Hordeum vulgare) by using kinetin and benzyl adenine. World J Agric Sci. ??3:617–629.?
Sharma K, Walia N. 1996. Growth and yield of soybean (Glycine max (L.) Merr.) as ?influenced by light and cytokinin. Environ Ecol. 14:307–310.?
Soares LH, Dourado Neto D, Fagan EB, Teixeira VF, Pereira IS. 2017. Physiological, ?phenometric and productive changes in soybean crop due to the use of kinetin. ?Pesquisa Agro Trop. 47:80–86.?
Sofo A, Dichio B, Montanaro G, Xiloyannis C. 2009. Shade effect on photosynthesis ?and photoinhibition in olive during drought and rewatering. Agric Water ?Manage. 96:1201–1206.?
Solamani A, Sivakumar C, Anbumani S, Suresh T, Arumugam K. 2001. Role of plant ?growth regulators on rice production: A Review. Agric Rev. 23:33–40.?
Taiz L, Zeiger E. 2006. Plants physiology, 4th Ed. Sinauer Associates Inc. Publishers, ?Sunder land, Massachusetts, USA.?
Tayel MY, Sabreen KhP. 2011. Effect of irrigation regimes and phosphorus level on ?two Vica faba varieties: 1–Growth characters. J App Sci Res. 7:1007–1015.?
Wei Y, Jin J, Jiang S, Ning S, Liu L. 2018. Quantitative response of soybean ?development and yield to drought stress during different growth stages in the ?Huaibei Plain, China. Agron 8:97.?
Yeh S, Chen H, Ng C, Lin C, Tseng T, Li W, Ku, MSB. 2015. Down–regulation of ?cytokinin oxidase 2 expression increases tiller number and improves rice yield. ?Rice. 8:1–13.?
Zhang J, Liu J, Yang C, Du S, Yang W (2016) Photosynthetic performance of soybean ?plants to water deficit under high and low light intensity. South Afr J Bot ??105:279–287.?




How to Cite

Saudy, H. S., El–Metwally, I. M., & Abdelhamid, M. T. (2021). Efficacy of benzyladenine for compensating the reduction in soybean productivity under low water supply. Italian Journal of Agrometeorology, (2), 81–90. https://doi.org/10.36253/ijam-872