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University of Nebraska–Lincoln

Agronomy and Horticulture

The Science and Application of Plants to Sustain and Enhance Human Life

Ismail Dweikat

Associate Professor
Sorghum and Pearl Millet Genetics

Contact Information
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DEGREES:

  • 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
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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.

COURSES TAUGHT:

  • Agronomy 991, 992, and 993: Graduate Seminars
  • Agronomy 919 : Plant Genetics
  • Agronomy 496/ 896 : Crop engineering

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.

SELECTED PUBLICATIONS:

  • 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.

  • Dhungana, P., K. M. Eskridge, P. S. Baenziger, B. T. Campbell, K. S. Gill, I.Dweikat. 2007. Analysis of genotype-by-environment interaction in wheat using a structural equation model and chromosome substitution lines. Crop Science. 47: 477-484.

  • Kuleung, C. P. S. Baenziger, S. D. Kachman, and I. Dweikat. 2006. Evaluating the Genetic Diversity of Triticale Using Wheat and Rye SSR Markers. Crop Sci. 46:1692-1700.

  • Dilbirligi, M., M. Erayman, B. T. Campbell, H. S. Randhawa, P. S. Baenziger, I. Dweikat, K. S. Gill. 2006. High-density mapping and comparative analysis of agronomically important traits on wheat chromosome 3A. Genomics 88:74-87.

  • Howe, A., Sato, S., Dweikat, I. Fromm, M., and Clemente, T. 2006. Rapid and Reproducible Agrobacterium-mediated Transformation of Sorghum. Plant Cell Rep. 25:274-791

  • Budak, H.,Shearman, B., and Dweikat, I. 2005.Evolution of Buchloë dactyloides based on cloning and sequencing of matK, rbcL, and cob genes from plastid and mitochondrial genomes. Genome 48 : 411–416.

  • Dweikat, I., Rajewski, J. and Eastin J. 2005. Registration of N584, N587, and N588, Large-Seeded Grain Sorghum Germplasm. Crop Science. 45:1174-1175.

  • Dweikat, I. 2005. A diploid, interspecific, fertile hybrid from cultivated sorghum, Sorghum bicolor, and the common Johnsongrass weed Sorghum halepense. Molecular Breeding. In press.

  • Rajewski, J., Andrews, D., Baltensperger, D., G. Frickel, G., Dweikat. I. 2005. Registration of NPM-5 and NPM-6 Dwarf Grain Pearl Millet Restorer Germplasms. Crop Science. In press.

  • Andrews, D., Rajewski, J., and Dweikat, I. 2004. Registration of N-Si-6, N-Si-7, N-Si-8 Foxtail Millet Germplasms. Crop Sci. 44:1030.

  • Budak, H., Shearman, R., Parmaksiz, I., Gaussoin, R.,and I. Dweikat .2004. Molecular characterization of buffalograss germplasm using sequence-related . amplified polymorphism (SRAP) markers. Theor. Appl. Genet.108:328-334.

  • Budak, H., Shearman, R., Parmaksiz, and I. Dwe ikat. 2004. Comparative analysis of seeded and vegetative biotype buffalograss based on phylogenetic relationship using ISSRs, SSRs, RAPDs, and SRAPs. Theor. Appl. Genet. 109:280-288.

  • Dweikat, I. 2004. Cross-species and Cross-genera Comparisons in the Grasses. In Encyclopedia of Plant and Crop Science 1 st ed ition; Goodman, R. M., ed ; Marcel Dekker Inc.: New York , pp 374- 378 .

  • Dweikat, I., Ficus, E., Cregan, P. Development of CT-based microsatellites in pearl millet. 2004. International Sorghum and Millets Newsletter. 44:146-149.

  • Kuleung C, Baenziger PS, Dweikat I (2004) Transferability of SSR markers among wheat, rye, and triticale. Theor. Appl. Genet. 108(6):1147-1150.

  • Mahmood, M., Baenziger,P. S. , H. Budak, Gill, K. and Dweikat, I. 2004. The use of microsatellite markers for the detection of genetic similarity among winter bread wheat lines for chromosome 3A. Theor Appl Genet 109:1494-1503

  • Mater, Y., Baenziger, S., Gill, K., Graybosch, R., Whitcher, L., Baker, C., Specht, J., Dweikat, I. 2004. Linkage mapping of powdery mildew and greenbug resistance genes on recombinant 1RS from 'Amigo' and 'Kavkaz' wheat-rye translocations of chromosome 1RS.1AL. Genome. 47:292:298.

  • Rajewski, J., Andrews, D., and Dweikat, I. 2004. Registration of NPM-4, a Dwarf White Grain Pearl Millet Germplasm . Cro p Sci. 44:2275.

  • Rajewski, J., Andrews, D., and Dweikat, I. 200 4. Registration of NPM-8, a Dwar f Grain Pearl Millet Germplasm with Long Panicles . Crop Sci. 44:2276.

  • Sato, S, Clemente, T., and I. Dweikat. 2004. Identification of an elite sorghum genotype with high in vitro performance capacity. In Vitro cellular & Developmental Biology-Plants. 40:57-60.

  • Budak, H., Pedraza F., Cregan, P., Baenziger, S., Dweikat, I. 2003. Development and utilization of SSR markers to evaluate the degree of genetic relationships in a collection of pearl millet germplasm. Crop Sci. 43:2284-2290.