Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2019.811.817El-Sayed El-AwadiMohamed Shamon SadakMervat Gad Ali El-RorkiekKowther Gergis DawoodMona 82019198Background and Objective: Wheat is one of the most important cereal crops grown in the world. The main amino acids synthesized by plants are glutamic acid and aspartic acid and from these two amino acids, the other amino acid may be formed. This study aimed to investigate the physiological role of aspartic acid in improving quality and productivity of two wheat cultivars grown under sandy soil conditions. Materials and Methods: A field experiment was carried out at the experimental Station of National Research Centre, Nubaria district, El-Behrea Governorate-Egypt, during two winter seasons of 2016/2017 and 2017/2018. Wheat grains cultivars (Benisuif 4 and Sohag 3) were obtained from Agricultural Research Centre Giza, Egypt. The experimental design was complete randomized block design with four replications. Foliar application of aspartic acid (0, 50, 75 and 100 mg L1) was carried out twice, plants were sprayed after 45 and 60 days from sowing. Results: It was noted that Benisuif 4 cv. was characterized by higher significant growth parameters, photosynthetic pigments, grains, straw and biological yield than Sohag 3 cv. when grown under sandy soil conditions. Aspartic acid treatments (50, 75 and 100 mg L1) caused marked significant increases in all growth parameters under investigation, photosynthetic pigments, yield and yield components, quality of the yielded grains (carbohydrate, protein, N, P, K contents) in both wheat cultivars. It is worthy to mention that 75 mg L1 was the most pronounced treatment in increasing quality and productivity of two wheat cultivars grown under sandy soil conditions. Conclusion: It was concluded that aspartic acid treatments (50, 75 and 100 mg L1) increased quality and quantity of two wheat cultivars grown under sandy soil conditions, especially 75 mg L1 was the most pronounced treatment.]]>Johansson, E., M.L. Prieto-Linde, G. Svensson and J.O. Jonsson,2003140275284Svec, I., M. Hruskova and O. Jirsa,2006607886Davies, D.D.,19821982pp: 189-228pp: 189-228Levitt, J.,19802nd Edn.,pp: 309-317pp: 309-317Vernieri, P., E. Borghesi, A. Ferrante and G. Magnani,200538688Alaru, M., U. Laur and E. Jaama,20031310Meijer, A.J.,20031332057S2062SAkladious, S.A. and S.M. Abbas,20139282298Galili, S., R. Amir and G. Galili,200814980Rashad, E.S.M., H.M. El-Abagg and A.A. Amin,200318132149Ahmed, A.H.H., M.R. Nesiem, A.M. Hewedy and H. Sallam,20106552569Buchanan, B.B., W. Gruissem and R.L. Jones,20002nd Edn.,Pages: 1280Pages: 1280Taiz, L. and E. Zeiger,20105th Edn.,Pages: 782Pages: 782Moran, R.,19826913761381Herbert, D., P.J. Phipps and R.E. Strange,19715209344Chapman, H.D. and P.F. Pratt,19781978Snedecor, G.W. and W.G. Cochran,19807th Edn.,Pages: 507Pages: 507Zaki, N.M., M.S. Hassanein and K.M. Gamal El-Din,2007311211126Rizwan, M., S. Ali, M.Z. Akbar, M.B. Shakoor, A. Mahmood, W. Ishaque and A. Hussain,2017242193821947Nikiforova, V.J., M. Bielecka, B. Gakiere, S. Krueger and J. Rinder et al.,200630173183Abo Sedera, F.A., A.L. Amany, A.A. Abd El-Latif, L.A.A. Bader and S.M. Rezk,201025154169Zhao, Y.,2010614964DeLille, J.M., P.C. Sehnke and R.J. Ferl,20011263538Maeda, H. and N. Dudareva,20126373105Wettlaufer, S.H. and R.L. Obendorf,1991in vitro.]]>3113191323Marschner, H.,19952nd Edn.,Pages: 889Pages: 889Haroun, S.A., W.M. Shukry and O. El-Sawy,2010Phaseolus vulgaris under in vitro conditions.]]>7121Sadak, M.S., M.T. Abdelhamid and U. Schmidhalter,201520141152Zakirullah, M., S. Innayat, T. Jan, M. Arif, M. Ali and M. Alam,2018Trifolium alexandrinum).]]>6379384Sultan, M.S., A.N. Attia, A.M. Salma, S.A. El-Moursy, E.M. Said and M.M. Abou El-Nagah,20002000Cakmak, I., H. Ozkan, H.J. Braun, R.M. Welch and V. Romheld,200021401403Sharaan, A.N., F.S. Abd El-Samie and I.A. Abd El-Gawad,2000Triticum aestivum L.) to some environmental influence: Effect of planting date and drought at different plant stages on yield and its components.]]>2000pp: 15Zaki, N.M., M.A. Ahmed and M.S. Hassanein,200442515525Azimi, M.S., J. Daneshian, S. Sayfzadeh and S. Zare,20135-8816819Hammad, S.A.R. and O.A.M. Ali,201459133145Mazher, A.A.M., S.M. Zaghloul, S.A. Mahmoud and H.S. Siam,2011Codiaeum variegatum L. Plant.]]>10318323Galili, G. and B.A. Larkins,19981998pp: 487-507pp: 487-507