Meiosis analysis in soft winter wheat varieties — carriers of wheat-rye translocations 1BL.1RS and 1AL.1RS

Abstract

Aim. Investigation of the features of the meiosis flow in winter wheat varieties — carriers wheat-rye translocations 1BL.1RS and 1AL.1RS. Methods. A comparative analysis of the meiosis flow in winter wheat varieties, the carriers of various translocations, was carried out using the method of temporary pressure preparations. Results. The frequency and spectrum of meiosis anomalies in introgressive winter wheat varieties with wheat-rye translocations 1BL.1RS and 1AL.1RS are established. The variability of the frequency of violations at different stages of microsporogenesis in the carrier classes of a certain translocation is shown, which may be due to a different period of stabilization of their genomes. It was found that the frequency of violations in varieties with different translocations did not exceed 10 %, which is normal for stable introgressive varieties. Conclusions. It was found that in all stages of microsporogenesis in the number of cells with violations and their spectrum, varieties with translocation of 1BL.1RS are slightly different from those with translocation of 1AL.1RS. Keywords: bread winter wheat, translocations 1BL.1RS and 1AL.1RS, meiotic flow.