Non-canonical inheritance of powdery mildew resistance in common wheat introgressive lines

  • T. K. Ternovska National University of “Kyiv Mohyla Academy”, Ukraine, 04070, Kyiv, Skovorody str., 2
  • M. Z. Antonyuk National University of “Kyiv Mohyla Academy”, Ukraine, 04070, Kyiv, Skovorody str., 2
  • T. V. Shtefiuk National University of “Kyiv Mohyla Academy”, Ukraine, 04070, Kyiv, Skovorody str., 2
  • V. S. Martynenko National University of “Kyiv Mohyla Academy”, Ukraine, 04070, Kyiv, Skovorody str., 2

Abstract

Aim. Determine the nature of inheritance of powdery mildew resistance in common wheat introgressive lines developed with Aegilops species. Methods. Interline crossing, individual assessment of plants for resistance to powdery mildew, modeling of phenotypic classes ratios. Results. Empirical segregation for the trait susceptibility/resistance to powdery mildew in F2 and backcross plants from the crosses of introgressive lines of common wheat and its cultivars were characterized by ultra high frequency of appearance of susceptible plants. Susceptible plants appeared among progeny of resistant parents, and in backcross populations from crossing of resistant F1 hybrids with resistant crossing component. Considering influence of gametes formation with different chromosome numbers and zygotes with different viability on segregation ratios did not gave the possibility to develop adequate model of inheritance. Conclusions. Inheritance of powdery mildew resistance of wheat plants, which is controlled by alien resistance genes could not be modeled on the basis of traditional combinatorics of alternative alleles in hybrids without information about the expression of the gene of interest on molecular level.

Keywords: wheat introgressive lines, powdery mildew, inheritance model, aneuploid gamets.

References

Conner R.L., Kuzyk A.D., Su H. Impact of powdery mildew on the yield of soft white spring wheat cultivars. Can J. Plant Sci. 2003. 83. P. 725-728. doi: 10.4141/P03-043

Tommasini L., Yahiaoui N., Srichumpa P., Keller B. Development of functional markers specific for seven Pm3 resistance alleles and their validation in the bread wheat gene pool. TAG. 2006. V. 114 (1). P. 165-175. doi: 10.1007/s00122-006-0420-1

McIntosh R., Dubcovsky J., Rogers W., Morris C., Xia X. Catalogue of gene symbols for wheat: 2017 supplement, 1-20.

Hao Y., Parks R., Cowger C., Chen Z., Wang Y., Bland D., Johnson J. Molecular characterization of a new powdery mildew resistance gene Pm54 in soft red winter wheat. TAG. 2015. V. 128 (3). P. 465-476. doi: 10.1007/s00122-014-2445-1

Ma P., Xu H., Xu Y., Li L., Qie Y., Luo Q., An D. Molecular mapping of a new powdery mildew resistance gene Pm2b in Chinese breeding line KM2939. TAG. 2015. V. 128 (4). P. 613-622. doi: 10.1007/s00122-015-2457-5

Sun Y., Zou J., Sun H., Song W., Wang X., Li H. PmLX66 and PmW14: New Alleles of Pm2 for Resistance to Powdery Mildew in the Chinese Winter Wheat Cultivars Liangxing 66 and Wennong 14. Plant Disease. 2015. V. 99 (8). P. 1118-1124. doi: 10.1094/PDIS-10-14-1079-RE

Xu H., Yi Y., Ma P., Qie Y., Fu X., Xu Y., An D.. Molecular tagging of a new broad-spectrum powdery mildew resistance allele Pm2c in Chinese wheat landrace Niaomai. TAG. 2015. V. 128 (10). P. 2077-2084. doi: 10.1007/s00122-015-2568-z

Olivera P.D., Millet E., Anikster Y., Steffenson B.J. Genetics of Resistance to Wheat Leaf Rust, Stem Rust, and Powdery Mildew in Aegilops sharonensis. Genetics and Resistance. 2008. V. 98, No. 3. P. 353-358. doi: 10.1094/PHYTO-98-3-0353

Sears E.R. The aneuploids of common wheat. Missouri Agricultural Experiment Station Research Bulletin. University Archives of the University of Missouri, Columbia, MO, 1954. V. 572.

Zhao N., Zhu B., Li M., Wang L., Xu L., Zhang H., Zheng Sh. Qi B., Han F., Liu B. Extensive and heritable epigenetic remodeling and genetic stability accompany allohexaploidization of Wheat. Genetics. 2011. -V. 188. Р. 499-509. doi: 10.1534/genetics.111.127688

Madlung A., Wendel J.F. Genetic and epigenetic aspects of polyploid evolution in plants. Cytogenet Genome Res. 2013. V. 140. P. 270-285. doi: 10.1159/000351430