Analysis of Resistance to Stem Rust in Wheat Cultivars and Lines from Some Wheat Region of China

182 wheat cultivars(lines) from fifteen provinces of China had been identified for resistance to stem rust at seedling and adult stage during 2008 to 2009.The results indicated that 114 wheat cultivars(lines) were resistant,accounted for 62.64% of all tested materials.Among them,cultivars(lines) from the Northeast spring-wheat region,the Northern winter-wheat and Huang Huai Hai winter-wheat region showed good resistance,cultivars(lines) from some provinces lack resistance,and even all thirteen cultivars(lines) from Jiangsu province showed susceptible.It was concluded the wheat cultivars and lines showed good resistance to stem rust in some wheat region of China,but there were a number of susceptible cultivars(lines),so the threat to the prevailing of stem rust still existed.