Document Type : Original Article

 Abo-Zaid, A.N. (2000). Plant Hormones and Agricultural Applications. Arabic House for Publishing and Printing, Second edition, The Egyptian Arabic Republic. [In Arabic]. 
Ageel, S., Elmeer, K. (2011). Effects of casein hydrolysates and glutamine on callus and somatic embryogenesis of date palm (Phoenix dactylifera L.). New York Sci. J., 4(7):121-125.
Al-Baker A. (1972). [Date palm past and present, the new in the cultivation, industry and trade]. Al-Ani Press, Baghdad, Iraq, pp. 1085. [In Arabic].
Al-Khalifa A. A. S. (2007). [Study of effect of plant growth regulators and some medium components on adventitious bud initiation from date palm (Phoenix dactylifera L. cv. Barhee) callus in vitro culture]. (PhD Thesis), College of Agriculture, University of Basrah, Iraq, pp. 150.
Anderson, J. W. (1978). Sulpher in biology. The camelot press Ltd., Southampton. Great Britain.
Ibrahim, N.H.H. (2012). Some factors affecting the initiation of embryogenic callus of date palm (Phoenix dactylifera L.) cv. Breem, and randomized multiplication indices RAPD. M.Sc. Thesis. College of Agriculture, University of Baghdad, Iraq.[In Arabic].
Igielski, R., Kepczynska, E. (2012). The effect of GA3 and paclobutrazol on somatic embryogenesis in Msdicago trucatula Gaertn. Developmental Biology Plant 42: 270-273 .
Khierallah, H. S. M., Hussein, N. H. (2013). The role of coconut water and casein hydrolysate in somatic embryogenesis of date palm and genetic stability detection using RAPD markes. Research in Biotechnology, 4(3):20-28.
Murashige T., Skoog F. A. (1962). Revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiologia Plantarum, 15:473-497.
Muter A. M. (1991). [Date palm cultivation and production]. Dar Al-Hikmah Press. Basrah University, Iraq, pp. 230. [In Arabic].
Ogas, J., Chen, J. T., Sung, S. R., Somerville, C. (1997). Cellular differentiation regulated by gibberellins in Arabidopsis thaliana pickle mutouf. Journal of Science, 227: 417- 423.
Piqueras, A., Han, B. H., Escribano, J., Rubio, C., Hellin, E., Fernandez, J. A. (1999). Development of cormogenic nodules and microcorms by tissue culture, a new tool for the multiplication and genetic improvement of saffron. Agronomy Journal, 19:603-610.
Plessner, O., Ziv, M., Neghbi, M. (1990). In vitro corm production in the saffron crocus (Crocus sativus L.). Plant Cell, Tissue and Organ Culture, 26:89-
Rudus. I., Kepcznska, E., Kepczynski, J. J. (2002). Regulation of Medicageo sativa Lsomatic embryogenesis by gibberellins. Plant Growth Regulators, 36 (1) :91-95.
Snedecor G. M., Cochran W. G. (1986). Statistical Methods. 9th ed., The Iowa State University, American Press, Iowa, U.S.A., pp. 507.
Subotic, A., Jevremovic, S., Trifunovic, M., Petric, M., Milosevic, S., Grubisic, D. (2009). The influence of gibberllic acid and paclobutrazol on induction of somatic embryogenesis in wild type and hairy root cultures of Centaurium erythraea Gillib. African Journal of Biology, 8(4):3223
Torrey, J. G. (1967). Development in Flowering Plant. The Macmillan Company, New York. pp 112-134.
Vari, E. S. (2010). Evaluation and optimizations of media on the tissue culture system of upland rice. Inter. Journal of Agriculture Biotechnology, 12(4): 537-540.
Wu, I.F., Chen, J. T., Chang, W.C. (2004). Effects of auxins and cytokinins on embryo formation from root-derived callus of Oncidium`Gower Ramsey`. Plant Cell, Tissue and Organ Culture, 77:107-109.
Zhong, H., Srinivasan, C., Sticken, M.B.(1991). Plant regeneration via somatic embryogenesis in creeping bent grass (Agrostis palustris Huds.). Plant Cell Reports, 10: 453- 456.