Determination of Optimum Gamma Ray Irradiation Doses for Hulless Barley (Hordeum vulgare var. nudum L. Hook. f.) Genotypes

The limited germplasm resources of hulless barley restrict the breeding with improved traits. Mutation techniques are an effective tool for generating variation plant studies. This study aimed to evaluate impact gamma-ray at different doses on certain seedling properties M1 plants two genotypes, as well determine dose (ED50). seeds two-row cv. Yalin and line YAA7050-14, were irradiated 100, 150, 200, 250, 300 gray Gamma-rays delivered by a Cobalt 60 source along non-irradiated control samples. Gamma-ray irradiation affects both genotypes significantly. significant effect varied based doses, traits, genotypes. While lower found statistically identical in majority qualities generation, 250-300 gamma ray caused decreases characteristics studied (ED50) determined plotting growth reduction values lengths, then polynomial regression equations calculated each genotype. It was that 50% shoot length reached 214.1 Gy 253.4 respectively.