Identification of Leaf Rust Resistance Genes in 50 Wheat Cultivars
Breeding resistant varieties is the most economical and feasible method to control wheat leaf rust.In order to further explore the resistance genes,50 wheat varieties were selected in this study,including wheat varieties from Shan-dong,Henan,Hebei,Shandong and other 8 provinces.Firstly,16 physiological races of leaf rust fungus(THFS,TGTS,THJS,FHKT,FGJN,KHKS,FCJQ,RFKS,THFM,MHGT,KHGS,KBGT,FHGT,PHHT,FHJT,FCJT)were inoculated to 36 vector cultivars containing known leaf rust resistance genes,and 50 wheat varieties tested during the seedling stage.Due to the different virulence of each strain,specific molecular markers closely linked to known disease resistance genes can be combined and analyzed based on the differences in phenotype,and it can be inferred that 50 wheat materials may contain leaf rust resistance genes.The leaf rust resistance genes were identified by genetic deduction,molecular markers and pedigree analysis.The results showed that a total of 9 known resistance genes(Lr1,Lr2c,Lr10,Lr16,Lr26,Lr34,Lr37,Lr45 and Lr46)and a few unknown genes were detected in 50 cultivars.There were 22 varieties including Zimai 12 that contained the Lr1 gene;there were 10 varieties including Lumai 14 that contained the Lr2c gene;Laizhou 9361 only con-tained the Lr10 gene;there were 25 varieties including Kenong 199 that contained the Lr16 gene;there were 15 varieties including Xuzhou 24 that contained the Lr26 gene;Baomai 3 and Jingdong 8 contained the Lr34 gene;The Lr37 gene was contained in Zimai 12,He 0927,and He 9946;there were 11 varieties including Lianmai 2 that contained the Lr45 gene;there were 38 varieties including Shannong 19 that contained the Lr46 gene.
国家科技期刊平台
NSTL
万方数据
维普
