@article{article_418372, title={Macromutational Variability in Metric Traits Of Barley}, journal={Akdeniz University Journal of the Faculty of Agriculture}, volume={3}, pages={139–152}, year={1990}, author={Çağırgan, M. İlhan and Yıldırım, B. Metin}, keywords={Arpa, mutant, makromutant populasyon}, abstract={<p>An applied macromutation study was planned to induce the variability of various metric traits in barley. In accord with this aim, seeds of "Kaya" variety were treated with the 15 and 30 krad of gamma rays. The M2-bulk population of each doses were grown at two locations, Bornova and Tokat in 1985-1986. During the vegetation period all the viable mutants were selected at both locations. The selected potential mutants and the control plants were grown as the M3 generation in 3 separate trials in Tokat. Heritability values in broad-sense based on variance components were estimated and the frequency poligons were plotted for 14 characters studied in each populations. The results obtained h’sve clearly showed that there were the wide induced variability in all quantitative traits studied in the macromutant populations, which were generally on the left side of the control’s. The frequency poligons for days to heading and number of kernels had multiple peaks in the mutant populations which clearly indicated that the induced variation were discrete and qualitative in nature. In spite of’ obtaining useful mutations in individual characters such as early heading, shorter plant height, higher thousand kernel weight etc. in this study, these mutant lines could not be used directly since no over yielding mutant lines were found as compared to the best control line. Considering the selection procedure applied in this study and the magnitude of the induced-changes obtained, it could be concluded that the increase of the variation was due to macromutations. Therefore these mutant lines have a potential of indirect use. <br /> </p>}, number={1-2}, publisher={Akdeniz Üniversitesi}