استحداث طفرتين من القمح مقاومتين لمرضي التفحم الشائع و تبقع الأوراق السبتوري باستخدام التقنية النووية

Seeds of wheat cultivar SaberBeg and its hybrids obtained from F2 generation were irradiated with different doses of fast neutrons. Populations of 1699 variants were screened for resistance against common bunt and septoria leaf blotch disease under artificial inoculation conditions. Selection of resistant plants has been carried out in different generations from M3 to M7 at Tela’far Experimental Station, Mosul. In addition, yield and yield components and some other agronomic traits were also studied. Results revealed that some mutants showed desirable agronomic traits with clear resistance to both diseases. The new mutant cultivar 155 was resistant to both common bunt and septorial leaf blotch diseases. Meanwhile, the mutant cultivar 217b was resistant to the formal disease and moderately resistant to the latter disease. Furthermore, the two new mutants have surpassed their parents in yield and yield components and other agronomic traits at different experimental stations.