Genetic Analysis Of The Resistant Genes To Stripe Rust In N.Strampelli And Two Important Germplasms

N.Strampelli is a famous variety which was introduced from Italy to China in the 1970s. Inheritance of stripe rust resistance genes in N.Strampelli is important for revealing the resistance to stripe rust and developing durable cultivars. To confirm the resistant genes, N.Strampelli was crossed with susceptible cultivar MingXian169, Chinese spring and set dialed crossed among them. The gene's chromosome location was determined by the monosomic Chinese Springs. The genetic analysis of Lantian1 was investigated under High-temperature. The resistance of wheat-Haynaldia villosa translocation lines V3 to yellow rust was investigated. The results are as follows:1. N.Strampelli was tested with prevalent stripe rust races CYR29, CYR30, CYR31, CYR32, SU-4, SU-11, SU-14 and CYR29-mut3, all of which were resistance to stipe rust races expect CYR32.When N.Strampelli was crossed with susceptible cultivar MingXian169, there was one recessive gene controlled when tested with CYR29-mut3. The resistance to CYR29 and CYR31 was overlappedly controlled by two recessive genes. The resistance to CYR30 and SU-14 was overlappedly controlled by one recessive gene and one dominant gene. The resistance to SU-4 was dependently or overlappedly controlled by two recessive genes.When N.Strampelli was crossed with susceptible cultivar Chinese spring, the resistance to CYR29-mut3, SU-4 and SU-14 was controlled by one recessive gene.The resistance to CYR30 and CYR31 was overlappedly controlled by one recessive gene and one dominant gene.The gene's chromosome location was determined by the monosomic Chinese Springs. The one recessive gene of resistance to CYR29-mut3 was located on chromosome 5B. The resistance to CYR29 was overlappedly controlled by two recessive genes which were located on chromosomes 1B and 5B.In terms of 208 primers of SSR marker, Xgwm499, Xwmc415 and Xwmc537 were located on chromorome 5BL. The map distance between Xgwm499, Xwmc415 and Xwmc537 toYrN.S are 7.6cM, 5.4cM and 10.7cM respectively. The application of marker-assisted selection for the breeding of new wheat cultivars with the stripe rust resistance gene is discussed.2. The race-specific and non-race-specific resistance in Lantian1 was investigated for the resistant phenotype and classical genetic analysis. In high temperature, seedings of Lantian1, Mingxian169 and there F2 Progeny were tested with CYR31 and CYR32. The result showed that the resistance to CYR31 and CYR32 was controlled by one dominant gene.3 Wheat-Haynaldia villosa translocation line V3 was tested with prevalent seven stripe rust races. All of them are resistant to stipe rust races. The resistance genes all may be come from Haynaldia villosa by projenies analysis. The resistance to CYR29 or SU-14 was dependently or overlappedly controlled by two dominant genes. The resistance to CYR31 was dependently or overlappedly controlled by one recessive gene and one dominant gene. The resistance to CYR32 and SU-4 was overlappedly controlled by two dominant genes. The resistance to SU-11 was controlled by one dominant gene.