1- Bagci, S. A., Ekiz, H., Yilmaz, A., and Cakmak, I. 2007. Effects of zinc deficiency and drought on grain yield of field-grown wheat cultivars in Central Anatolia. Journal of Agronomy and Crop Science 193: 198–206.
2- Balali, M. R., Malakouti, M. J., Mashayekhi, H. H., and Khademi, Z. 2000. The effects of micronutrients on the increase of yield, and determination of their critical levels in irrigated wheat in Iran. Journal of Soil and Water Sciences 12(6): 111-119. (In Persian).
3- Batten, G. D. 1994. Concentrations of elements in wheat grains grown in Australia, North America, and the United Kingdom. Australian Journal of Experimental Agriculture 34: 51-56.
4- Cakmak, I. 2008. Enrichment of cereal grains with zinc: agronomic or genetic bio-fortification. Plant Soil 302: 1–17.
5- Cakmak, I., Torun, A., Millet, E., Feldman, M., Fahima, T., Korol, A., Nevo, E., Braun, H.J., and Ozkan, H. 2004. Triticum dicoccoides: An important genetic resource for increasing Zinc and Iron concentration in modern cultivated wheat. Soil Science Plant Nutrition 50: 1047-1054.
6- Dejan D., Quarrie S., and Stankovic S. 2002. Characterizing wheat genetic resources for responses to drought stress. Euphytica 97: 307-318.
7- Emam, Y., Ranjbar, A. M., and Bahrani, M. J. 2007. Evaluation of yield and yield components in wheat genotypes under post- anthesis drought stress. Journal of Science and Technology of Agriculture and Natural Resources, Water and Soil Science 11 (1): 317-327. (In Persian).
8- Emami, A. 1996. Methods of plant analysis. Technical bulletin 982, soil and water research institute, Agricultural education publication. Tehran, Iran. p128. (In Persian).
9- FAO. 2011. State of Food Insecurity in the world. Rome.
10- FAO. 2013. http://faostat.fao.org/site/567/DesktopDefault.aspx?PageID=567#ancor
11- Ficco, D. B. M., Riefolo, C., Nicastro, G., Di Gesu, A. M., Beleggia, R., De Simone, V., Menga, V., Cattivelli, L., and De Vita, P. 2008. Content of macro and microelements in a collection of durum wheat cultivars. Available online at http: www.from seed to pasta 2008.
12- Fischer, R. A., and Maurer, R. 1978. Drought resistance in spring wheat cultivars. 1. Grain yield responses. Australian Journal of Agricultural Research 29: 897-912.
13- Ghorbanli. M., and Babalar, M. 2003. Mineral nutrition in plant. Teacher Training University Publisher, Tehran, 355p. (In Persian).
14- Gooding, M. J., Ellis, R. H., Shewry, P. R., and Schofield, J. D. 2003. Effects of restricted water availability and increased temperature or grain filling, drying and quality of winter wheat. Journal of Cereal Science 37: 295-309.
15- Graham, R. D., and Welch, R. M. 1996. Breeding for staple-food crops with high micronutrient density: Working Paperson Agricultural strategies for Micronutrient. NO. 3. International Food Policy Institute, Washington DC.
16- Hao, H. L., Wei, Y. Z., Yang, X. E. Y., and Feng, C. Y. 2007. Effects of different nitrogen fertilizer levels on Fe, Mn, Cu and Zn concentrations in shoot and grain quality in rice (Oryza sativa). Rice Science 14: 289-294.
17- Hershfinkel, M. 2006. Zn2+, a dynamic signaling molecule. In molecular biology of metal homeostasis and detoxification. From Microbes to Man (Tama` s, M.J. and Martinoia, E., eds). Springer. 131-152.
18- Hirschi, K. 2008. Nutritional improvements in Plants: time to bite on biofortified Foods. Trends in Plant Sciences 13: 459-463.
19- Iran Nejad, H. 1994. Cultivation of oat. Tehran University Press. Tehran, Iran (In Persian).
20- Lindsay, W. L., and Norwell, W. A. 1960. Development of a DTPA micronutrient soil test, Agronomy Abstracts 1969-1984.
21- Liu, Z. H., Wang, H. Y., Wang, X. E., Zhang, G. P., Chen, P. D., and Liu, D. J. 2006. Genotypic and spike positional difference in grain phytase activity, phytate, inorganic phosphorus, iron and zinc contents in wheat (Triticum aestivum L.). Journal of Cereal Science 44: 212-219.
22- Monasterio, I., and Graham, R. D. 2000. Breeding For trace minerals in wheat. Food and nutrition bulletin 21: 392-396.
23- Mirzapour, M. H., and Khoshgoftar, A. H. 2006. Zinc application effects on yield and seed oil content of sunflower grown on soil. Journal of Plant Nutrition 29: 1719–1727.
24- Nour-Mohammmadi, G., Siadat, A., and Kashani, A. 2010. Agronomy Vol.1. Cereal Crops (5th ed). Shahid Chamran University Publication. Ahwaz, Iran. 446p. (In Persian).
25- Oury, F. X., Leenhardt, F., R´em´esy, C., Chanliaud, E., Duperrier, B., Balfourier, F., and Charmet, G. 2006. Genetic variability and stability of grain magnesium, zinc and iron concentrations in bread wheat. European Journal of Agronomy 25: 177-185.
26- Page, A. L., Miller, R. H., and Keeney, D. R. 1982. Methods of soil analysis, part 2, second edition, American Society of Agronomy- Soil Science Society of America, Madison, USA, 1159 p.
27- Pantuan, G., Fukai, S., Cooper, M., Rajatasereeku, S. O., and Toole, J. C. 2002. Yield response of rice (Oryza sativa L.) genotypes to different types of drought under rain fed lowlands. Part1. Grain yield and yield components. Field Crops Research 73: 153-168.
28- Peleg, Z., Saranga, Y., Yazici, A., Fahima, A., Ozturk, L., and Cakmak, I. 2008. Grain zinc, iron and protein concentrations and zinc efficiency in wild emmer wheat contrasting irrigations regimes. Plant Soil 306: 57-67.
29- Pearson, J. N. Rengel, Z., Jenner, C. F., and Graham, R. D. 2008. Manipulation of xylem transport effects Zn and Mn transport into developing wheat grains of cultured ears. Physiologia Plantarum 98: 229-234.
30- Royo, C., Abaza, M., Blanco, R., and Graca del Moral, L. F. 2000. Triticale grain growth and morphometry as affected by drought stress. Australian Journal of plant Physiology 27: 1051-1059.
31- Salardini, A. A. 2007. Soil fertility. Tehran University Publications. 8th Edition. 428p. (In Persian).
32- Savaghebi Firouzabadi, G. R., Malakouti, M. J., and Moez Ardalan, M. 2003. Effects of zinc sulfate application as well as seed zinc concentration on responses of wheat plant in a calcareous soil. Iranian Journal of Agriculture Science 34(2): 471-482. (In Persian with English Abstract).
33- Shekaari, P. 2009. Soil variability of soils of agricultural college: a pedomtric viewpoint. Final report of research project. Razi University, Kermanshah, Iran. (In Persian).
34- Sommer, A. L. 1995. Further evidence of the essential nature of zinc for the growth higher green plants. Plant Physiology 3: 217–221.
35- Stain, A. J. 2009. Global impacts of human mineral malnutrition. Plant Soil 335: 133-154.
36- Tandon, H. L. S. 1995. Micronutrients in soil, crops, and fertilizers development and consultation organization. New Delhi. India.
37- WHO. 2007. Micronutrient deficiency. Iron deficiency anemia. Geneva: WHO, available from http://www.who.int/nutrition/ topics/ida/
38- Welch, R. M. and, Graham, R. D. 1999 .A new paradigm for world agriculture: meeting human needs productive, sustainable, nutritious. Field Crops Research 60: 1-10.
39- Welch, R. M., and Graham, R. D. 2005. Agriculture: the real nexus for enhancing bioavailable micronutrients in food crops. Journal of Trace Elements in Medicine and Biology 18: 299–307.
40- Yasrebi, J. N., Karimian, M. Maftoun, A. A., and Sameni, A. M. 1994. Distribution of zinc forms in highly calcareous soils as influenced by soil physical and chemical properties and application of zinc solphate. Communications in Soil Science and Plant Analysis 25: 2133-2145.
41- Yazdansepas, A., Keshavarz, S., Kebriaee, A., Rafiepour, S., Aminzadeh, G. R., Koucheki, A. R., Chaichi, M., and Najafi Mirak, T. 2009. A study of grain yield, yield components in some promising bread wheat (Triticum aestivum L.) genotypes under complete irrigation and terminal drought stress conditions. Iranian Journal of Field Crop Science 40 (1): 109-119. (In Persian).