Cytological identification of telotrisomic and double ditelosomic lines in Secale cereale cv. Heines Hellkorn by means of Giemsa C-banding patterns and crosses with wheat–rye addition lines

Abstract

Seven telotrisomic lines (1RS, 1RL, 2RS, 2RL, 3RS acro, 5RS, and 6RS), two double monotelosomic, and two double ditelosomic lines of Secale cereale cv. Heines Hellkorn were analyzed by means of Giemsa C-banding techniques. In crosses with several wheat–rye chromosome addition lines, the telosomic chromosomes in double ditelosomic lines 1/23 and 3/23 were found to be homologous to chromosomes 1R and 2RL of cv. Imperial rye. The C-banding pattern observed for the telosomes in these lines was similar to that detected in the 1R and 2R telosomics of the corresponding telotrisomic lines. Key words: Secale cereale, telotrisomics, double ditelosomics, C-banding pattern.