Maize germplasm were identified and evaluated for resistance to sheath blight caused by Rhizoctonia solani. The biological characters of R.zeae and soluble protein, isoesterase patterns of isolates of R. solaniAG1-IA and R.zeae were studied.161 maize germplasm were identified and evaluated for resistance to sheath blight caused by Rhizoctonia solani. The results indicated that no immune or highly resistant germplasm was found. The percent of resistant and moderate resistant germplasm were 2.5%, 5.0%, respe...