بخش تحقیقات گیاه پزشکی استان لرستان

Z. Noruzi^1*, S. A. Mosavi jorof¹, M. Darvishnia²,  N. Azadbakht³ , F. Fayazi¹  

 Department of plant protection, college of Agriculture, Shahid Chamran University, Ahwaz;

 Department of plant protection, college of Agriculture, Lorestan University, Lorestan;

 Department of plant protection, Agricultural and Natural Resources Research Center of  Khoramabad.      

Abstract:

To study the races of corn common smut in Lorestan province, the isolates that had the highest percentages of germination were selected among collected isolate from each township. These isolates were inoculated on selected corn lines after appearance of maize clusters. Results from this study indicated that the percentage and the severity of infection of isolates were different on various lines. According theses results, K17/2-3 and TV926 lines had the lowest and the highest resistance to used isolates, respectively. The highest and the lowest percentages of pathogenicity were resulted from isolate number 1 with 95/3%, and isolates number 8 and 43 with 50% pathogenicity, respectively. Isolates were divided in two groups for race identification based on percent and infection density so isolates 6,7,8,9 were placed is same group.

Key word: maize, line, pathogenicity, genetic similarity, gall, severity