The effect of gamma-irradiation of dry seeds on productivity of common wheat plants differing in the presence of rye 1BL/1RS translocation

  • N. A. Kozub
  • I. A. Sozinov
  • H. Ya. Bidnyk
  • N. A. Demianova
  • A. V. Karelov
  • Ya. B. Blume
  • A. A. Sozinov

Abstract

Aims. The effect of gamma-irradiation of dry seeds on productivity traits of common wheat plants depending on the presence of the rye 1BL/1RS translocation in the homozygous or heterozygous state was studied. Methods. Dry F2seeds from the cross of Bezostaya 1 lines were treated with gamma-radiation at doses of 150, 200, and 300 Gy. Each grown F2 plant was characterized with respect to yield traits. The presence of the rye translocation was analyzed by electrophoresis of their seeds. Results. At 150 Gy, the heterozygote for the translocation showed the lowest decrease in productivity traits in comparison with the control. At 200 Gy the lowest relative decline in productivity was observed in the homozygote for the translocation. Conclusions. Genotypes differing in the presence of the 1BL/1RS translocation show the different levels of reduction in productivity traits at certain doses of gamma-irradiation of dry seeds.

Key words: Triticum aestivum L., 1BL/1RS translocation, gamma-irradiation, productivity.