The Determination Of Pathogenic Range And Parasitic Fitness Analysts Of "Zhong4" To T4New Strains Of Puccinia Strifformis F.SP.Tritici

Stripe rust,caused by Puccinia striiformis f.sp.tritici, as a seriously wheat diseases inthe world because of rust resistance losses mainly is the produce and development of newvirusal races.thus since1949s, China has at least seven cultivars rust resistance lossesbecause of new varieties of alternative.Since CYR32appear, The Varieties that can be in the differential host of immuneexisting stripe rust physiological varieties only is the zhongsi in four varieties in China Therest of the differential hosts showed varying degrees of susceptibility,Thus with the "zhongsivarieties are widely used in rust-resistant breeding, Its new rust-resistant varieties ofanti-source background will be more and more exist in China's future large scale applications,Found the new strain T4is the only infection in four strains,so it is Become a top priority fornew bacteria T4biology research.In this study, mainly compaes thestudy of new strains with China's major epidemicstrains including through a set of known single gene Department of stripe rust resistance genevarieties to stripe rust strains T4virulence genes spectrum to analyse and determine.andAnalysis what has been contained in the type of virulence genes. The main Wheat Varietiesin Huanghuai of Wheat Varieties that is representative areas of China's Rust District on theDetermination of the resistance of the new strain T4and anlyse the rust fungus strain T4seedling stage parasitic fitness.Virulence genes, Determination of pathogenic range and Parasitic suitable fordetermination,all these study has Important role for Development of new strains of rapiddetection system and whether it Will become the predominant species ahead of forecast, thecontinued control of rust-resistant breeding and disease of great significance on thedevelopment of new strains of rapid detection system for stripe rust.