Abstract
The Responses of Durum Whea\ (Tniicum durum Desf.) Cuitivars to Mutagens
The goal of artificial mutagenesis is to increase the rate of mutation for the desired characteristic. The selection of mutagens depends upon some extent to their availability and effectiveness for achieving the desired genetic changes, Cuitivars have different responses to mutagenic treatments. Mutagenic treatments cause some physiological damages in Mj plant. This study was conducted to determine the responses of Gediz-75 ve Sofu durum wheat cuitivars to EMS treatment and gamma irradiation in Tokat-Kazova conditions in 1996 and 1997. The seeds were irradiated with 50 Gy, 100 Gy, 150 Gy and 200 Gy by gamma rays or treated with 0. i %, 0.2 %, 0.3 % and 0.4 % EMS. The seeds were treated with EMS at 24 °C for 8 hours without presoaked and were washed for 6 hours after treatment. Either of treated varieties were grown separately in the trial. Besides, the treatments of gamma rays and EMS separately were "Randomized Complete Block Design" with three replications. Mutagens caused different effects on investigated characteristics of M] plants and these effects were varied with cuitivars. The mutagen treatments had the negative effects on characteristic in both cuitivars. These effects markedly increased with high doses (150 Gy. 200 Gy, % 0.3 EMS, % 0.4 EMS). The physiological damage with gamma irradiation was higher than EMS treated in M| plants.
Keywords
Durum wheat mutagen gamma rays EMS M plant
