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 L.J. Anil, R.H. Phipps, The potential of forage-maize intercrops in ruminant nutrition, Animal Feed Science and Technology. 85 (2000) 157-164.DOI: https://doi.org/10.1016/s0377-8401(00)00176-0
 J.A. Cusicanqui, J.G. Lauer, Plant density and hybrid influence on corn forage yield and quality, Agro. J. 91 (1999) 911-915.DOI: https://doi.org/10.2134/agronj1999.916911x
 M. Koutsika- Sotiriou, Hybrid seed production in maize, in: A.S. Basra (Ed.), Heterosis and hybrid seed production in agronomic crops, Food Products Press, NewYork, 1999, pp.25-64.
 M. Cooper et al., Breeding drought-tolerant maize hybrids for the US corn-belt: Discovery to product, J. Exp. Bot. (2014)..
 I. Ahuja, R.C. de Vos A.M. Bones, Plant molecular stress responses face climate change, Trends Plant Sci. 15 (2010) 664–674.DOI: https://doi.org/10.1016/j.tplants.2010.08.002
 R. Ngara, R. Ndimba J.B. Jensen, Identification and profiling of salinity stress-responsive proteins in Sorghum bicolor seedlings, J. Proteomics. 75 (2012) 4139–4150.DOI: https://doi.org/10.1016/j.jprot.2012.05.038
 W. Schlenker, M.J. Roberts, Nonlinear temperature effects indicate severe damages to U.S. crop yields under climate change, Proc. Nat. Acad. Sci. USA. 106 (2009) 15594–15598.DOI: https://doi.org/10.1073/pnas.0906865106
 J.D. Oster, R. C. Reeve M. Fireman, Salt problems in relation to irrigation, In: Irrigation of agricultural lands (ed. by R. M. Hagen), Agronomy J. 11 (1967) 988-1008.DOI: https://doi.org/10.2134/agronmonogr11.c56
 K. H. Amer, Corn crop response under managing different irrigation and salinity levels, Agric. Water Manage. 97 (2010)1553-1563.DOI: https://doi.org/10.1016/j.agwat.2010.05.010
 FAO, The use of saline waters for crop production - FAO irrigation and drainage paper 48, Available: http://www.fao.org/docrep/t0667e/t0667e00.HTM. (2000).
 A.B. Elahmadi, A.B. Elahmadi, A proposal for the release of two maize hybrids for the irrigated central clays of Sudan, A paper submitted to the Variety Release Committee, Khartoum, Sudan. (2012) 1-12.
 A.E. Kambal, Comparative performance of some varieties of sorghum, maize and pearl millet for forage production, Sudan Agricultural Journal. 10 (1984) 46-60.
 W.G. Cochran, G.M. Cox, Experimental designs, 2nd edn. John Wiley and Sons, Inc. New York. (1957) 293-316.
 Genstat, Ninth edition. Version – 188.8.131.52.Lawes Agricultural Trust (Rothamsted Experimental Station) VSN International, Hertfordshire (2011).
 B. Bojović et al., Effects of NaCl on seed germination in some species from families Brassicaceae and Solanaceae, Kragujevac Journal of Science. 32 (2010) 83-87.
 FAO, FAOSTAT, Food and Agricultural Organization of the United National http://www.feedipedia.org/node/5351. (2011).
 I.S. Afzal et al., Improving germination and seedling vigour in wheat by haloprimingunder saline conditions, Pakistan Journal of Agricultural Sciences. 44 (2007) 40– 49.
 R. Munns, Comparative physiology of salt and water stress, Plant Cell Environ. 25 (2002) 239-250.
 J.O. Payero et al., Effect of timing of a deficit–irrigation allocation on corn evapotranspiration, yield, water use efficiency and dry mass, Agricultural Water Management. 96 (2009) 1387–1397.DOI: https://doi.org/10.1016/j.agwat.2009.03.022
 M.B. Khan, H.A. Nazim, I.B. Muammad, Effect of water stress on growth and yield component of maize varieties, Research science. 12 (2001) 15-18.
 FAO, Crop water requirements under arid condition, Dallyn. P.M, more food from better technology, Rome. (1983) 383-392.
 H.E. Elawad, Growth and Production of Maize (Zea mays L.) as Affected by Water Treatment, Organic and Inorganic Fertilizers M. Sc. Thesis, Faculty of Agric. U. of K., Sudan. (2007).
 M.A. Ibrahiem et al., Proceedings of the Meetings of the National Crop Husbandry Committee 39th, Agricultural Research Corporation, Wad Medani, Sudan. (2005) 105-125.
 M. Ashraf, M. Hafeez, Thermo tolerance of pearl millet and maize at early growth stages: growth and nutrient relations, Biol. Plant. 48 (2004) 81-86.DOI: https://doi.org/10.1023/b:biop.0000024279.44013.61
 R.S. Dubey, Photosynthesis in plants under stressful conditions, in: M. Pessarakli (Ed.), Handbook of Photosynthesis, 2nd edition, CRC press, Boca Roton, Florida, 2005, pp.717-737.
 S. H. Kim et al., Temperature dependence of growth, development and photosynthesis in maize under elevated CO2, Environ. Exp. Bot. 61 (2007) 224-236.
 A. Wahid et al., Heat tolerance in plants: An overview, Environ. Exp. Bot. 61 (2007) 199–223.
 Z. Ristic et al., Rubisco activase and wheat productivity under heat stress conditions, J. Exp. Bot. 60 (2009) 4003-404.
 T. Hussain et al., Breeding potential for high temperature tolerance in corn (Zea mays L.), Pakistan J. Bot. 38 (2006) 1185–1195.
 K. L. Smith, Ohio Agron. Guide, Corn prod. Ohio state Univ. USA, bulletin: 472, Steel, R. G. D., Torrie J. H., Deekey. D. A., 1997. Principles and procedures of Statistics, A Biometrical Approach, 3rd ED. Mc Graw Hill Book, Int. Co. New York. (1996) 400-428.
 R.W. Heiniger, The impact of early drought on corn yield. Raleigh, NC: North Carolina State University. (2001) Available: http://www.ces.ncsu.edu/plymouth/cropsci/docs/early_drought_impact_on_corn.html.
 M. I. Mohammed et al., A proposal for the release of two Egyptian maize hybrids for the irrigated sector in Northern and Central Sudan, A paper submitted to the Variety Release Committee, Khartoum, Sudan. (2013) 1-16.
 E.V. Maas, G.J. Hoffman, Crop salt tolerance - current assessment, Journal of the Irrigation and Drainage. 103 ( 1977) 115–134.