OJGen  Vol.4 No.3 , June 2014
QTL Positioning of Thousand Wheat Grain Weight in Qaidam Basin
Abstract: TGW is an important agronomic trait that influences the yield and milling quality of wheat. In this paper, after having investigated the phenotype of TGW from 114 ITMI recombinant inbred genealogies in 4 years in Qaidam Basin, a typical plateau oasis agricultural area, and having combined 1410 molecular markers, 7 major QTL loci of the thousand gain weight were screened out with the aid of QTL network software. These loci included qTgw1B (42.6 cm), qTgw2A(77.9 cm), qTgw2D1 (25.4 cm), qTgw2D2 (51.8 cm), qTgw6A1 (56.1 cm), qTgw6A2 (62.2 cm) and qTgw7A(75.7 cm) with their genetic contribution rates between 3.29% - 19.36%. There were two epistatic effect loci2A-2D and2A-6B with their genetic contribution rates as 2.3% and 5.3% respectively. The quantitative genetic locus positioning of thousand hexaploid wheat grain weight in Qaidam Basin can assist us in better understanding the genetic regulatory network formed by TGW, and can also provide a theoretical basis for improving thousand wheat grain weight in this ecological area.
Cite this paper: Wei, L. , Bai, S. , Li, J. , Hou, X. , Wang, X. , Li, H. , Zhang, B. , Chen, W. , Liu, D. , Liu, B. and Zhang, H. (2014) QTL Positioning of Thousand Wheat Grain Weight in Qaidam Basin. Open Journal of Genetics, 4, 239-244. doi: 10.4236/ojgen.2014.43024.

[1]   Dixon, J.M. (2009) Wheat Facts and Futures 2009. CIMMYT (International Maize and Wheat Improvement Center).

[2]   Wang, L.F., Ge, H.M., Hao, C.Y., Dong, Y.S. and Zhang, X.Y. (2012) Identifying Loci Influencing 1,000-Kernel Weight in Wheat by Microsatellite Screening for Evidence of Selection during Breeding. PLoS ONE, 7, e29432.

[3]   Zhang, K.P., Wang, J.J., Zhang, L.Y., Rong, C.W., Zhao, F.W., Peng, T., Li, H.M., Cheng, D.M., Liu, X., Qin, H.J., et al. (2013) Association Analysis of Genomic Loci Important for Grain Weight Control in Elite Common Wheat Varieties Cultivated with Variable Water and Fertiliser Supply. PLoS ONE, 8, e57853.

[4]   Campbell, K.G., Bergman, C.J., Gualberto, D.G., Anderson, J.A., Giroux, M.J., Hareland, G., Fulcher, R.G., Sorrells, M.E. and Finney, P.L. (1999) Quantitative Trait Loci Associated with Kernel Traits in a Soft x Hard Wheat Cross. Crop Science, 39, 1184-1195.

[5]   Peng, J.H., Ronin, Y., Fahima, T., Roder, M.S., Li, Y.C., Nevo, E. and Korol, A. (2003) Domestication Quantitative Trait Loci in Triticum dicoccoides, the Progenitor of Wheat. Proceedings of the National Academy of Sciences of the United States of America, 100, 2489-2494.

[6]   Kumar, N., Kulwal, P.L., Gaur, A., Tyagi, A.K., Khurana, J.P., Khurana, P., Balyan, H.S. and Gupta, P.K. (2006) QTL Analysis for Grain Weight in Common Wheat. Euphytica, 151, 135-144.

[7]   Zhang, L.Y., Liu, D.C., Guo, X.L., Yang, W.L., Sun, J.Z., Wang, D.W. and Zhang, A.M. (2010) Genomic Distribution of Quantitative Trait Loci for Yield and Yield-related Traits in Common Wheat. Journal of Integrative Plant Biology, 52, 996-1007.

[8]   Chen, D. (1993) Eco-Physiological Characteristics and Cultivation Techniques of High Yield of Spring Wheat in Qaidam Basin. In: Su, L., Ed., New Progress in China’s Cultivation of Wheat, China Agriculture Press, Beijing, 327-340.

[9]   Su, Z.Q., Hao, C.Y., Wang, L.F., Dong, Y.C. and Zhang, X.Y. (2011) Identification and Development of a Functional Marker of TaGW2 Associated with Grain Weight in Bread Wheat (Triticum aestivum L.). Theoretical and Applied Genetics, 122, 211-223.

[10]   Faris, J.D., Anderson, J.A., Francl, L.J. and Jordahl, J.G. (1997). RFLP Mapping of Resistance to Chlorosis Induction by Pyrenophora Tritici-Repentis in Wheat. Theoretical and Applied Genetics, 94, 98-103.

[11]   Borner, A., Schumann, E., Furste, A., Coster, H., Leithold, B., Roder, M.S. and Weber, W.E. (2002) Mapping of Quantitative Trait Loci Determining Agronomic Important Characters in Hexaploid Wheat (Triticum aestivum L.). Theoretical and Applied Genetics, 105, 921-936.

[12]   Nelson, J.C., Singh, R.P., Autrique, J.E. and Sorrells, M.E. (1997) Mapping Genes Conferring and Suppressing Leaf Rust Resistance in Wheat. Crop Science, 37, 1928-1935.

[13]   Huang, X., Kempf, H., Ganal, M. and Röder, M. (2004) Advanced Backcross QTL Analysis in Progenies Derived from a Cross between a German Elite Winter Wheat Variety and a Synthetic Wheat (Triticum aestivum L.). Theoretical and Applied Genetics, 109, 933-943.

[14]   Del Blanco, I., Rajaram, S. and Kronstad, W. (2001) Agronomic Potential of Synthetic Hexaploid Wheat-Derived Populations. Crop Science, 41, 670-676.

[15]   Del Blanco, I., Rajaram, S., Kronstad, W. and Reynolds, M. (2000) Physiological Performance of Synthetic Hexaploid Wheat-Derived Populations. Crop Science, 40, 1257-1263.

[16]   Kunert, A., Naz, A.A., Dedeck, O., Pillen, K. and Léon, J. (2007) AB-QTL Analysis in Winter Wheat: I. Synthetic Hexaploid Wheat (T. turgidum ssp. Dicoccoides × T. tauschii) as a Source of Favourable Alleles for Milling and Baking Quality Traits. Theoretical and Applied Genetics, 115, 683-695.

[17]   Liu, S., Zhou, R., Dong, Y., Li, P. and Jia, J. (2006) Development, Utilization of Introgression Lines Using a Synthetic Wheat as Donor. Theoretical and Applied Genetics, 112, 1360-1373.

[18]   Narasimhamoorthy, B., Gill, B., Fritz, A., Nelson, J. and Brown-Guedira, G. (2006) Advanced Backcross QTL Analysis of a Hard Winter Wheat× Synthetic Wheat Population. Theoretical and Applied Genetics, 112, 787-796.

[19]   Zwart, R., Thompson, J., Sheedy, J. and Nelson, J. (2006) Mapping Quantitative Trait Loci for Resistance to Pratylenchus thornei from Synthetic Hexaploid Wheat in the International Triticeae Mapping Initiative (ITMI) Population. Crop and Pasture Science, 57, 525-530.