Asdollahzadeh, R., Naderi, A. and Kakzadeh, A. 2010. Effect of plant density on yield and yield components of wheat genotypes in different planting patterns. Journal of Crop Physiology 2 (1): 4-6. (In Persian with English Abstract).#Ayoub, M., Guertin,S., Lussier,S. and Smith, D. L. 1994. Timing and level of nitrogen fertility effects on spring wheat yield in eastern canada. Crop Science 34 (3): 748-756.#Bavar, M. 2008. Effects of planting date density on growth indecies and yield component of hull-less barley. M.Sc. Dissertation. University of Agriculture Sciences and Natural Resources of Gorgan, Iran. (In Persian).#Camara, K. M., Payne, W. A. and Rasmussen, P. E. 2003. Long-term effects of tillage, nitrogen, and rainfall on winter wheat yields in the Pacific Northwest. Agronomy Journal 95: 828-835.#Damania, A. B. and Jackson, M. T. 2006. An application of factor analysis for morphological data of wheat and barely landraces. Valley Nepol Research 5 (2): 25-30.#Delfin, S., Tognetti, R., Dsiderio, E. and Alvino, A. 2005. Effect of foliar application of N and humic acids on growth and yield of durum wheat. Agronomy and Sustainable Development 25: 183-191.# Donald, C. M. 1986. The breeding of crop ideotypes. Euphytica 17: 385-403.#Donaldson, E., Schillinger, W. E. and Dofing, S. M. 2001. Straw production and grain yield relationships in winter wheat. Crop Science 41: 100-106.#Elhani, S., Martos, V., Rharrabi, Y., Royo, C. and Garcia del Moral, L. F. 2007. Contribution of main stem and tillers to durum wheat (Triticum aestivum L. var. durum) grain yield andits components grown in Mediterranean environments. Field Crops Research 103: 25-35.#Emam, Y. and Niknezhad, M. 2005. An introduction on physiology of crop yield. Shiraz University Press. Second Edition. 551 p. (In Persian).#Fatima, M., Bedhlaf, M. and Rhomeri, Y. 1992. Fertilization of cereals: Soil nitrogen test. In: Ryan, J. and Matar, A. (Eds.). Fertilizer use efficiency under rainfed agriculture in West Asia and North Africa. ICARDA, Aleppo Syna. pp: 224.#Felehkora, H., Eghbalghobadi, M. and Khazaei, E. 2012. Variability of wheat spike under supplemental irrigation and nitrogen rates. Proceeding of 12th Iranian Crop Science Congress. Islamic Azad University of Karaj, Karaj, Iran. pp: 1-6. (In Persian).#Gharineh, M. H. and Nadian, H. 2011. Sustainable agriculture practices. Chamran University Press, Ahvaz, Iran. (In Persian).#Ghorbanijavid, M. 2005. Comprehensive book of agronomy, plant breeding and biotechnology. Vol. IV. Daneshpazhohan Azad Farda Press, Tehran, Iran. 247 p. (In Persian).#Giovanni, G., Silvano, P. and Giovanni, D. 2004. Grain yield, nitrogen use efficiency and baking quality of old and modern Italian bread-wheat cultivars grown at different nitrogen levels. European Journal of Agronomy 21: 181-182.#Hasheminejad, S. A., Shekarpour, M., Esfandiyari, E. and Zare, M. 2012. Investigation of relationship between morphological characteristics in different wheat cultivars. Proceeding of 12th Iranian Crop Science Congress. Islamic Azad University of Karaj, Karaj, Iran. Page 3. (In Persian).#Hay, R. K. M. and Walker, A. J. 1989. An introduction to the physiology of crop yield. Longman Scientific Technical. London. 291 p.#Hemmat, A. and Eskandari, I. 2006. Dryland winter wheat response to conservation tillage in a continues cropping system in Northwestern Iran. Soil and Tillage Research 92: 158-169.#Hiltbrunner, J., Streit, B. and Lidgens, M. 2007. Are seeding densities an opportunity to increas grain yield of winter wheat in a living mulch of white clover? Field Crops Research 102: 163-171.#Khagepour, M. 2006. Principles and foundations of agriculture. 2nd ed. Esfahan University Press. 386 p. (In Persian).#Kluson, A. R. 2006. Sustainable agriculture: Definitions and concepts. Newsletter of Agriculture/Natural Resource Extension.#Lebaschy, M. H. and Sharifi Ashour Abadi, E. 2004. Application of physiological growth indices for suitable harvesting of Hypericum perforatum. Pajouhesh and Sazandegi 65: 65-75.
(In Persian with English Abstract).#Malakouti, M. J. 1993. A comprehensive method for the detection of plant and recommend the use of chemical fertilizers in agricultural land of Iran. 2nd ed. Tarbiat Modarres University Press. pp: 2-35. (In Persian).#Maleki, E. Mansouri, S., Sidan, P., Heidarnjad, M. and Jaefarzadeh, M. 2012. Investigation of different plant densities on old and new wheat varieties. Proceeding of 12th Iranian Crop Science Congress. Islamic Azad University of Karaj, Karaj, Iran. (In Persian).#Mazaheri, D. and Majnoon Hosseini, N. 2008. General agriculture. 6th ed. Tehran University Press. pp: 1-80. (In Persian).#McNeal, F. H. and Davis, D. J. 1954. Effect of nitrogen fertilization on yield, culm number and porotein of certain spring wheat varieties. Agronomy Journal 46: 375-378.#Melero, S., Lopez-Bellido, R. J., Lopez-Bellido, L., Munoz-Romero, V. N., Lix Moreno, F., Murillo, J. M. and Franzluebbers, A. J. 2012. Stratification ratios in a rainfed Mediterranean Vertisol in wheat under different tillage, rotation and N fertilization rates. Soil and Tillage Research 119: 7-12.#Momtazi, F., Emam, Y. and Nagafali, K. 2005. Physiological characteristics and yield of winter wheat in response to sowing date and plant density. Journal of Science and Technology of Agriculture and Natural Resources 3 (9): 9-13. (In Persian with English Abstract).#Navabpour, S., Latifi, N., Hosseini, S. and Kazemi, G. 2011. Investigation of grain yield due to variations in crop growth and yield components. Electronic Journal of Crop Production 3 (4): 157-173. (In Persian with English Abstract).#Nourmohammadi, Gh., Siadat, A. and Kashani, A. 2010. Cereal crops. 9th ed. Chamran University Press, Ahvaz, Iran. (In Persian).#Olsen, J. E., Berntsen, J., Hansen, E. M., Petersen, B. M. and Petersen, J. 2002. Crop nitrogen demand and canopy area expansion in winter during vegetative growth. European Journal of Agronomy 16: 279-294.#Ouzuni Douji, A. A., Esfahani, M., Samizadeh Lahiji, H. and Rabiee, M. 2008. Effect of planting pattern and plant density on growth indices and radiation use efficiency of apetalous flowers and petalled flowers of rapeseed (Brassica napus L.) cultivars. Iranian Journal of Crop Science
9: 32-40. (In Persian with English Abstract).#Power, J. F. and Alessi, J. 1978. Tiller development on yield of standard and semidwarf spring wheat varieties as affected by nitrogen fertilizer. Journal of Agricultural Science 90: 97-108.#Rahimizadeh, M., Kashani, E. and Zare-Feizabadi, A. 2010. Effect of pre-sowing crops, nitrogen fertilizers and returning crop residue on the growth and yield of wheat. Journal of Agricultural Research 8 (1):98-110. (In Persian with English Abstract).#Rahnama, A., Bakhshandeh, A. and Noormohammadi, Gh. 2000. Investigation and determination of the part of the tiller in plant in the different density on grain yield and yield components in wheat in Khozectan. Iranian Journal of Agricultural Science 2 (3): 12-24. (In Persian with English Abstract).#Rezaei, M., Eivazi, E. R., Yazdansepas, A. and mohamadi, S. 2012. Effect of agronomic and physiological characteristics on grain yield of wheat genotypes under limited irrigation conditions. Proceeding of 12th Iranian Crop Science Congress. Islamic Azad University of Karaj, Karaj, Iran. (In Persian).#Royo, C., Villegas, D., Rharrabti, Y., Blanco, R., Martos, V. and Garcia Delmoral, L. F. 2006. Grain growth and yield formation of durum wheat grown at contrasting latitudes and water regimes in a Mediterranean environment. Cereal Research Communications 34: 1021-1028.#Salehi, F., Safari, S. and Rafiei Alhosseini, M. 2006. Effects of planting date and density on yield and yield components of hull-less barley. Proceeding of 9th Iranian Crop Science Congress. (In Persian).#Soleimanifard, E., Naseri, R., Naserizadeh, H., Mirzaei, A. and Nazaralizadeh, K. 2009. Effect of nitrogen fertilizer levels on yield and yield components of wheat cultivars in Ilam province. Proceeding of National Conference on Water Science, Soil, Plant and Agricultural Mechanization. Islamic Azad University of Dezful, Khuzestan, Iran. (In Persian).#Taki, A. and Hemmat, E. 1998. The effect of different methods of seed bed preparation and seeding rates on yield and yield components of irrigated wheat. Proceeding of 5th Iranian Crop Science Congress, Karaj, Iran. (In Persian).#Tohidi, M., Siadat, S. A. and Hashemi Dezfuli, A. 1996. Investigation and comparison of tillering and yield of wheat cultivars in different seeding rates in the climatic conditions of Dezful. Proceeding of 4th Iranian Crop Science Congress, Karaj, Iran. (In Persian).#Varga, B., Svecngak, I. and Pospisil, I. 2001. Winter wheat cultivars performance as affected by production systems in Croatia. Agronomy Journal 93: 961-966.#Von Braun, J. 2007. The world food situation: New driving firces and required actions. IFPRI. Presented at CGIAR Annual General Meeting, Bejing, China.
)