A PRELIMINARY STUDY ON THE SENSITIVITY OF RICE SHEATH BLIGHT FUNGI (RHIZOCTONIA SOLANI) TO JINGGANGMYCIN IN ZHENGZHOU SUBURBS

The preliminary study showed that there were two anastomosis groups of Rhizoc tonia solani AG 1IA and AG 1IC from rice sheath blight in Zhengzhou suburb s. The sensitivity of isolates of AG 1IA to Jinggangmycin was similar to that of natural wild ones. The resistance of isolates of AG 1IC to Jinggangmycin wa s tested to increase up to 11.14～15.03 times.