Ismail Dweika

Ismail Dweikat


Area of Expertise: Plant Breeding and Genetics

B.S., Plant Science, University of Florida, 1981

M.S., Vegetable Crop Physiology, University of Florida, 1983

Ph.D., Plant Breeding and Genetics, University of Florida, 1988

Area of Focus

Pearl Millet Genetics and Sorghum

Research Interests

I work in sorghum and pearl millet genetics. My program focuses on the genetics of sorghum and pearl millet with emphasis on the identification of DNA-based markers and mapping systems useful in practical selection schemes.

Extension Interests

Providing the sorghum and millet growers with timely information regarding opportunities and advances in germplasm development.

Major Project Activities

Identify loci and specific alleles that control the concentration of sweet sorghum stem sugar and cell wall constituents and flowering habit that are associated with biomass production. Application of comparative genomics to quantitative trait (QTL) analysis with emphasis on seed size, cold adaptation, and nitrogen use efficiency in sorghum. Study the molecular basis for cytoplasmic male sterility (CMS) in pearl millet. Establishment of strategies for efficient sorghum inbred development using DNA-based fingerprinting methods.

Courses Taught


  • Xu YZ, Santamaria R, Virdi KS, Arrieta-Montiel MP, Razvi F, Li S, Ren G, Yu B, Guo L, Feng X, Dweikat IM and Mackenzie SA. 2012. The chloroplast triggers developmental reprogramming when MUTS HOMOLOG1 is suppressed in plants. Plant Physiology. 159:710-720.
  • Kumar T, Dweikat, IM. Sato, S., Ge Z, Nersesian N, Chen H, Elthon, T. Bean, S., Ioerger BP, Tilley, M. and T. Clemente. 2012. Modulation of kernel storage proteins in grain sorghum (Sorghum bicolor (L.) Moench). Plant Biotech. J. 10: 533-544.
  • Dweikat, I., Clifford F. Weil, Stephen P. Moose, Leon Kochian, Nathan S. Mosier, Klein E. Ileleji, Patrick J. Brown, Wendy A. Peer, Angus S. Murphy, Farzad Taheripour, Maureen C. McCann, Nicholas C. Carpita. 2012. Envisioning the Transition to a Next-Generation Biofuels Industry in the Midwest. Biofuels, Bioproducts & Biorefining. Biofuels, Bioprod Bioref. 6:376-386.
  • Mengistu,N. P.S. Baenziger, K.M. Eskridge, I. Dweikat, S.N. Wegulo, K.S. Gill, and A. Mujeeb-Kazi. 2012. Validation of QTL for Grain Yield-Related Traits on Wheat Chromosome 3A Using Recombinant Inbred Chromosome Lines. Crop Sci.52:1622-1632
  • Dong Wang, Ibrahim Salah El-Basyoni, P. Stephen Baenziger, Jose Crossa, Kent M. Eskridge and Ismail Dweikat. 2012. Prediction of Genetic Values of Quantitative Traits with Epistatic Effects in Plant Breeding Populations. J. Heredity 109:309-313
  • Baenziger, P., Ismail Dweikat, Kulvinder Gill, Kent Eskridge, Terry Berke, Maroof Shah, B. Todd Campbell, M.L. Ali, Neway Mengistu, Abid Mahmood,Anyamanee Auvuchanon, Yang Yen, Sachin Rustgi, Benjamin Moreno-Sevilla, A. Mujeeb-Kazi, and M. Rosalind Morris. 2011. Understanding Grain Yield:It is a Journey, Not a Destination. Czech J. Genet. Plant Breed. 47: 577-584.
  • Tejinder, K, I. Dweikat,I. Sato, S Neresian, ,N. Xu, K , Ge, K,. Wang, D. Elthon, T. and Tom Clemente. 2011. Expression of the rice CDPK-7 in sorghum: molecular and phenotypic analyses. Plant Molecular Biology 75:467-479.
  • Liakat, A, P. Baenziger, S. Al Ajlouni, Z,. B. Campbell, T. K. S. Gill, K. M. Eskridge, A. Mujeeb-Kazi and Ismail Dweikat. 2011. Mapping QTL for Agronomic Traits on Wheat Chromosome 3A and a Comparison of Recombinant Inbred Chromosome Line Populations. Crop Sci. 51:553-566.
  • Xiaojuan, M, K Eskridge, D Wang, P.S Baenziger, B.T Campbell, K S. Gill, I Dweikat, J Bovaird. 2010. Regression-Based Multi-Trait QTL Mapping Using a Structural Equation Model. Statistical Applications in Genetics and Molecular Biology. Vol. 9 Iss. 1, Art. 38
  • Xiaojuan, M, K Eskridge, D Wang, P.S. Baenziger, B.T Campbell, K. S. Gill and I. Dweikat. 2010. Bayesian mixture structural equation modeling in multipletrait QTL mapping. Genetics Research, 92:239-250.
  • Wortmann, C., R.B. Ferguson, R.N. Klein, D.J. Lyon, A.J. Liska, and I. Dweikat. 2010. Dryland Performance of Sweet Sorghum and Grain Crops for Biofuel. Agromony Journal. In press.
  • Pedraza-Garcia, J.E. Specht, and I. Dweikat. 2010. A new PCR-based Linkage Map of Pearl Millet. Crop Sci. In press
  • Feng, X., Kaur, A., Mackenzie, S., I. Dweikat. 2009. Substoichiometric-Shifting in the Fertility Reversion of Cytoplasmic Male Sterile Pearl Millet. Theor. Appl. Genet. 118:1361-1370
  • Ali, M., Rajewski, J., P.S. Baenziger, K. S. Gill, K. M. Eskridge and I. Dweikat. 2008. Assessment of genetic diversity and relationship among a collection of US sweet sorghum germplasm by SSR markers. Molec. Breeding. 21:497-509.
  • Christiansen, K.L., Weller, C.L., Schlegel, V.L., Dweikat, I.M. 2008, Comparision of Lipid Extraction Methods of Food-Grade Sorghum (Sorghum biolor) Using Hexane. Biological Engineering, 1:51-63.
  • Baenziger, P.S., R. A. Graoybosch, I. Dweikat, S. N. Wegulo, G. L. Hein, and K. M. Eskridge. 2008. In R. Appels, R. Eastwood, E. Lagudah, P. Langridge, M. Mackay, and L. McIntyre (ed) Proc. 11 th International Wheat Genetics Symposium. August 24 -29, 2008. Brisbane, Australia.
  • Budak, H., Sheannan, B, and I. Dweikat. 2007 .Molecular characterization of cDNAencoding resistance gene like sequences in Buchloe dactyloides. Molecular Biotechnology. 34:293-301.
  • Jeffery Wilson, J. Rajewski, Xinzhi, N, David Bunti, and I. Dweikat. 2008. Field screening for chinch bug (Heteropetra:islissidao) resistance in pearl millet under temperate and subtropical climate conditions. Plant Health Progress doi:10.1094/PHP-2009-0112-01-RS.
  • Dweikat, I., Rajewski, J. and Eastin J. 2007. Registration of N585, N586, N589, N590, and N591, tan plants large-seeded grain sorghum. Plant Reg. J. 1:64-65.