Effects on Variations in M-1 Generation of Durum Wheat (T. durum Thell) by Induced Mutagen

In this research conducted in Department of Field Crops, Tekirdag Agricultural Faculty, Trakya University, the effect of six different gamma ray doses on plant growth in M-1 generations derived from two durum wheat cultivars was investigated. In the experiment, 10 plants in each pot (17 x 40 cm) containing 5 kg soil were grown with three replicates. Total 30 plants for each treatment were used. In M1 generation, number of leaves, number of roots, seedling height, seedling weight, leaf weight and germination rate were determined. Application of 100-200 gray gamma ray doses did not have any inhibitory effect on investigated characters in seedling growth of M1 generation. On the other hand, 400-500 gray doses significantly inhibited the plant growth. 100-200 gray doses did not affect the seed germination rate whereas germination rate decreased with 400-500 gray gamma ray applications. At 600 gray dose, only one seed remained viably, rest of them could not survive. It was generally observed the highest variations at 300-400 gray gamma doses in M1 plants.