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United States Department of Agriculture

Agricultural Research Service

Title: Genetic Diversity In Abiotic Stress Tolerances Among Wheat Species

Authors
item Bebeli, Penelope - AG UNIV OF ATHENS
item Gkouveri, Kornia - AG UNIV OF ATHENS
item Gustafson, Kathryn - AG UNIV OF ATHENS
item Gustafson, J

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: June 1, 2007
Publication Date: June 1, 2007
Citation: Bebeli, P.J., Gkouveri, K.D., Gustafson, K.A., Gustafson, J.P. 2007. Genetic Diversity In Abiotic Stress Tolerances Among Wheat Species [abstract]. Workshop on Varietal Characteristics of Cereals in Different Growing Systems with Special Emphasis on Below Ground Traits, May 29-June 1, 2007, Valence, Hungary. p. 123.

Technical Abstract: Landraces and close related species of hexaploid wheat (Triticum aestivum L.) offer a vast reservoir of genetic resources for wheat improvement to production on abiotic stressed soils. In order to utilize the wheat landrace and close relative gene pools, the evaluation of wheat landrace and close relative collections are needed. In the present study, over 400 accessions of wheat landraces and close relatives from Greece, Romania, Turkey, and Israel were evaluated for tolerance to aluminum and acid soils, salinity in soils, and tolerance to boron were conducted using hydroponics. All screening evaluations were of seedling root growth when the roots were placed under abiotic stress conditions involving the presence of aluminum and low pH, the presence of sodium, and the presence of boron in the hydroponic solutions. The screening evaluations are currently in progress and at the present time only limited data from screening the accessions for tolerance to boron is available. The accessions being analyzed form a valuable cross section of wheat landraces, and wheat progenitor species for utilization in evaluating wheat and wheat relatives for new sources of tolerance to various abiotic stresses, which may be of value to and for expanding the gene pool available to wheat improvement programs as well as facilitating the isolation and characterization of the sequences involved in this important evolutionary process.

Last Modified: 4/18/2014
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