The influence of particular chromosome regions of Triticum timopheevii on the formation of resistance to diseases and quantitative traits in common wheat
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Evaluation of the influence of Triticum timopheevii Zhuk. introgression fragments (2n = 28, AtAtGG) and their combinations on resistance to leaf and stem rust, powdery mildew, and a number of quantitative traits in 15 introgressive lines of common wheat was conducted. Analysis of introgressive lines by molecular genetic and cytological methods showed the efficiency of using a complex of different types of markers for detailed characterization of hybrid forms and detection of different translocations and substitutions. Evaluation of lines according to their resistance to fungal diseases showed that lines that contain an introgressive fragment of the 5G chromosome in their genome are completely resistant to populations of leaf rust in Western Siberia and the stem rust that is typical for Omsk oblast. Lines 3862-5 and 3862-15, which contain a fragment of the long arm of the 2G chromosome in their genome, were resistant to the population of stem rust in Western Siberia. Introgressive lines were studied for a number of quantitative traits. No negative influence of alien material on the yield and other quantitative traits was observed in all studied lines, which allows one to use them in breeding as donors of resistance to fungal diseases. In addition, the positive influence of T. timopheevii 2G chromosome fragments on the number of grains in an ear was determined.
Keywordsintrogressive lines of common wheat T. timopheevii SSR analysis in situ hybridization C-banding resistance to fungal diseases quantitative traits
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- Egorova, E., Leonova, I., Budashkina, E., et al., Application of Marker Assisted Selection for Transferring Resistance Genes from Triticum timopheevii to Bread Wheat, in Proc. of the 20th Intern. Conf. on ITMI/2ndWGCJoint Workshop, September 1–5, 2010, Beijing, China, 2010, p. 78.Google Scholar
- Ganal, M.W. and Röder, M.S., Microsatellite and SNP Markers in Wheat Breeding, in Genomics-Assisted Crop Improvement, Varshney, R.K. and Tuberosa, R., Eds., New York: Springer, 2007, p. 124.Google Scholar
- Jorgensen, J.H. and Jensen, C.J., Gene Pm6 for Resistance to Powdery Mildew in Wheat, Euphytica, 1973, vol. 22, pp. 4–23.Google Scholar
- Knott, D.R., Translocations Involving Triticum Chromosomes and Agropyron Chromosomes Carrying Leaf Rust Resistance, Can. J. Genet. Cytol., 1968, vol. 10, pp. 695–696.Google Scholar
- Mains, E.B. and Jackson, H.S., Physiological Specialization in the Leaf Rust of Wheat, Puccinia triticina Erikss., Phytopathology, 1926, vol. 16, pp. 89–120.Google Scholar
- McIntosh, R.A., Yamazaki, Y., Dubcovsky, J., et al., Catalogue of Gene Symbols for Wheat, 2008. http://www.grs.nig.ac.jp/wheat/komugi/genes/
- McIntosh, R.A., Wellings, C.R., and Park, R.F., Wheat Rusts: An Atlas of Resistance Genes, Collingwood, Australia: CSIRO Publ., 1995.Google Scholar
- Roelfs, A.P., Singh, R.P., and Saari, E.E., Rust Diseases of Wheat: Concepts and Methods of Disease Management, Mexico: CIMMYT, 1992, p. 45.Google Scholar
- Saari, E.E. and Prescott, J.M., A Scale for Appraising the Foliar Intensity of Wheat Diseases, Plant Dis. Rep., 1975, vol. 59, pp. 377–380.Google Scholar
- Salina, E.A., Egorova, E.M., Adonina, I.G., et al., DNA Markers for Genotyping the Common Wheat (Triticum aestivum L.) Lines with the Genetic Material of Aegilops speltoides Tausch and Triticum timopheevii Zhuk., Inform. Vestnik VOGiS, 2008, vol. 12, no. 4, pp. 620–628.Google Scholar
- Yamamori, M., An N-Band Marker for Gene Lr18 for Resistance to Leaf Rust in Wheat, Theor. Appl. Genet., 1994, vol. 89, pp. 643–646.Google Scholar